pine bramble Dec 14, 2019, 4:37 PM

#

(just to supply a stubborn index heuristic)

vast cosmos Dec 14, 2019, 4:37 PM

#

And at least say you'll consider getting a $10 nucleo

pine bramble Dec 14, 2019, 4:37 PM

#

If you send it to me for free, I might open the envelope, yes. ;)

vast cosmos Dec 14, 2019, 4:38 PM

#

I can totally do that, no joke, I have an extra

pine bramble Dec 14, 2019, 4:38 PM

#

90 percent of what I do is program the core of any microcontroller.

#

you can just look up wa1tnr and get the address that way ;)

vast cosmos Dec 14, 2019, 4:39 PM

#

Do you speak French btw?

pine bramble Dec 14, 2019, 4:39 PM

#

un peu. ;)

vast cosmos Dec 14, 2019, 4:40 PM

#

That makes sense

pine bramble Dec 14, 2019, 4:40 PM

#

I'm currently relearning french. But extremely lazily so.

#

I want to go to Paris and live there for half a year.

vast cosmos Dec 14, 2019, 4:40 PM

#

One of your functions was French

#

Just half a year eh

pine bramble Dec 14, 2019, 4:41 PM

#

Oh yeah thats a market in Paris marche des enfants rouges

#

Well half a year to see if I can tolerate Parisians, and tourists, along with (expected to more than tolerate) expatriate Americans.

vast cosmos Dec 14, 2019, 4:42 PM

#

I thought it was the original title of March of the Penguins

pine bramble Dec 14, 2019, 4:42 PM

#

I think Marche there means market but I haven't looked it up. Could also be march as we say it in English.

#

(promenade maybe is closer here)

#

walk of the red infants .. may be a fair translation

#

(crying babies, I'd guess)

#

Maybe originally it was just a place to take the baby when it was crying, to get out of the house for a bit. ;)

#

https://goo.gl/maps/1a2xt2Cd8PhU3YvW8

Google Maps

Find local businesses, view maps and get driving directions in Google Maps.

#

https://fr.wikipedia.org/wiki/Marché_des_Enfants-Rouges

March%C3%A9_des_Enfants-Rouges

#

English:
https://en.wikipedia.org/wiki/Marché_des_Enfants_Rouges

#

(children wearing red is the etymology) (paupers wore red clothes!)

vast cosmos Dec 14, 2019, 4:58 PM

#

Bunch of riff raff

pine bramble Dec 14, 2019, 5:00 PM

#

I'm sure they knew how to beg. ;)

fluid wagon Dec 15, 2019, 1:43 AM

#

So, I have a question...SAMD51 and Servos 🙂

#

It appears the standard Arduino library doesn't play nice on the SAMD51

#

Is there an alternative?

pine bramble Dec 15, 2019, 2:09 AM

#

Servos are just PWM, I thought.

fluid wagon Dec 15, 2019, 2:12 AM

#

They are, however Arduino has a library to handle the issue. The timing needs to be precise, so a lib handles the heavy lifting

pine bramble Dec 15, 2019, 2:17 AM

#

I don't remember the details. Like, at all. Servos operate around 50 Hz at a specific range of duty cycles.
The microcontroller has a peripheral (still inside the physical chip) that can be told to maintain a signal on a pin, at a specific frequency and duty cycle.

#

There's no timing at all - just parameters that are passed to the peripheral.

#

Frequency and duty cycle. That should be it. Maybe I'm just mistaken about that.

pine bramble Dec 15, 2019, 2:46 AM

#

https://github.com/arduino-libraries/Servo/issues/21

#

https://github.com/arduino-libraries/Servo/pull/34

GitHub

SAMD51 support by ladyada · Pull Request #34 · arduino-libraries...

now working on G19 also tested on J19. We're using TC0 which is always available

burnt frigate Dec 15, 2019, 2:51 AM

#

So I have a question about circuitpython. I recently got a third party UNO R3 board. I want to use circuitpython because I used it before on a feather board. However, in the circuitpyton download page, I didn't see an option to download for an UNO R3 board. Am I doing something wrong

#

also when I attach the board to my computer nothing pops up but there is a light on the board

velvet charm Dec 15, 2019, 2:55 AM

#

Circuitpython doesn’t support it. Microcontroller hasn’t got enough power

burnt frigate Dec 15, 2019, 2:55 AM

#

Oh

#

So I have to use arduino language?

velvet charm Dec 15, 2019, 2:55 AM

#

Yes

burnt frigate Dec 15, 2019, 2:55 AM

#

Thank you

velvet charm Dec 15, 2019, 2:56 AM

#

You’re welcome

pine bramble Dec 15, 2019, 3:07 AM

#

@fluid wagon State of the art:
https://github.com/adafruit/Servo/blob/962192408a0a2608351fc54e567bca28ccb2b74b/src/samd/Servo.cpp

#

Identical to what the BSP installs.

#

https://forum.arduino.cc/index.php?topic=639649.0

crystal mesa Dec 15, 2019, 3:33 AM

#

@fluid wagon have you considered using a separate servo/PWM controller breakout? That way the library supports that breakout, not the upgraded main MP.

fluid wagon Dec 15, 2019, 3:34 AM

#

Well, my project is using the motor shield

crystal mesa Dec 15, 2019, 3:34 AM

#

Hmm

fluid wagon Dec 15, 2019, 3:34 AM

#

which apparently, just passes the pin from the underlying board

crystal mesa Dec 15, 2019, 3:34 AM

#

well, that sucks then

#

I am using the 12-bit 16-channel PWM controller breakout Adafruit makes

fluid wagon Dec 15, 2019, 3:35 AM

#

Unfortunately, the robot chassis I am using, prohibits a stack 3 tall 😉

#

That and, using the entire shield to drive a pan and tilt seems wasteful

#

😉

grizzled root Dec 15, 2019, 8:26 AM

#

hello, i have esp8266 with webserver. can i do that server.send can get data from other URL ?

velvet charm Dec 15, 2019, 4:46 PM

#

Hi guys! I’m having a problem. I’ve got a digispark clone from China, and I tried to set it up for Arduino IDE.
The board package downloads and installs successfully, but there’s a compilation error message when I try blink example. I am using Arduino 1.8.10(latest version) on non-retina MacBook Pro from mid-2012 on latest Mac OS. Thanks!

fluid wagon Dec 15, 2019, 6:17 PM

#

Happy Sunday! So, I am trying to use the QSPI flash on the Metro M4 in an arduino project. it is the M4 airlift, and I wanted to use the storage to store the web pages involved. Unfortunately, while looking at the SdFat_circuitpython example, I seem to be unable to mount the filesystem. I have installed circuitpython on the board once to format the flash. Am I missing something?

#

(to be clear, the example works, my code does not. I am trying to figure out what I missed copying over.)

#

Nevermind. typos for the win!

fluid wagon Dec 15, 2019, 8:05 PM

#

And for the record, I wish there was a way to transfer files without switching back and forth to circuitpython.

#

Perhaps a library to just run a sketch to make it a USB drive temporarily

pine bramble Dec 16, 2019, 1:54 AM

#

I'm currently working on just file creation in Arduino - it's already done; I'm just making the procedures easier for me to work with.

#

(I want the target's running program to be able to create new files on QSPI flashROM).

fluid wagon Dec 16, 2019, 1:55 AM

#

Well, I DO like the idea of the Adafruit_SPI/SdFat library way of handling the reading, I just wish I didn't have to swap firmware to be able to drop prepared files on it.

#

the combo I just mentioned allows you to do that nis

#

https://learn.adafruit.com/adafruit-feather-m0-express-designed-for-circuit-python-circuitpython/using-spi-flash

#

They already have a tutorial for it hidden away 😉

pine bramble Dec 16, 2019, 1:56 AM

#

It's really disruptive to have that giant picture there. ;)

#

https://github.com/wa1tnr/Cortex-Forth/blob/master/Cortex-Forth/src/flash_ops.cpp

#

Just delimit URI's with < and >

#

I wish they'd just turn that off.

#

danke

fluid wagon Dec 16, 2019, 1:57 AM

#

In any case...

#

Now that we have resolved that...there is an entire tutorial on the process

#

it works pretty much like the SD library, once you create the object

pine bramble Dec 16, 2019, 1:59 AM

#

I think I have example code that does all the parts that happen on the flashROM.

#

It's not a developed user interface - there's a guy that did a decent user interface with a Forth interpreter.

#

But the summer 2019 code change broke it. :) (code change for flashROM)

#

You could ask danh about why we can't have (just like you say) a sketch that exposes the USB thumb drive emulation.

fluid wagon Dec 16, 2019, 2:01 AM

#

That would be ideal

pine bramble Dec 16, 2019, 2:01 AM

#

You may agree that Adafruit does support Arduino but prioritizes CircuitPython.

fluid wagon Dec 16, 2019, 2:01 AM

#

I get that Adafruit wants to push circuitpython for education, but, I already put in my time learning arduino coding.

pine bramble Dec 16, 2019, 2:02 AM

#

If CircuitPython didn't exist I think it'd be difficult to make the case that the existing Arduino support was somehow lacking.

fluid wagon Dec 16, 2019, 2:02 AM

#

Hey, back when I started this there was ONLY arduino

pine bramble Dec 16, 2019, 2:02 AM

#

(Believe me I went through all the usual range of emotions with this one)

fluid wagon Dec 16, 2019, 2:02 AM

#

It is NICE to see educational languages for electronics

pine bramble Dec 16, 2019, 2:03 AM

#

We very likely wouln't have .UF2 at all.

#

We still don't use it for Arduino after all. ;)

#

What kills me .. is all the interest in AVR's even today. ;)

#

I'm so like 'get with it people' on that. ;)

#

They should give you a private copy of what you wrote before they strike it.

#

That's just wrong.

fluid wagon Dec 16, 2019, 2:04 AM

#

Right then...atmel (now microchip) makes some darn fine mcus.

pine bramble Dec 16, 2019, 2:05 AM

#

Yeah I did skip right over AVR and first started with SAMD21 .. right after my 8051 days. ;)

fluid wagon Dec 16, 2019, 2:05 AM

#

nods as would I but sure 😉

#

Their house, their rules

pine bramble Dec 16, 2019, 2:05 AM

#

fwiw my boss fully understood the value of Atmel stuff way before I did.

#

I miss understanding assembler. There's so little interest in thumb2 by the grassroots developer community.

#

They are all like 'you cannot beat the compiler at its own game .. do not even try'.

#

The culture is still pretty messed up. ;)

fluid wagon Dec 16, 2019, 2:08 AM

#

Well, I get that using assembler can be more efficient. But, how many developers would put in the time to learn the skills to be more efficient than the compiler?

pine bramble Dec 16, 2019, 2:08 AM

#

It's not just about efficiency.

fluid wagon Dec 16, 2019, 2:08 AM

#

Not saying it isn't a skill worth pursuing, but that is a very small pool.

pine bramble Dec 16, 2019, 2:08 AM

#

I'm interested in the same things I was when I read the description of the internal components of a CPU.

#

I want to 'enjoy them' .. those internal components of the CPU .. of the core itself.

#

I don't know how else to express that (tersely haha)

#

That one chip, stripped of all its peripheral goodies, is astonishing to me and worth years of study.

fluid wagon Dec 16, 2019, 2:10 AM

#

No, I get it, I was telling a friend about the SAMD51, and going through the peripherals it has on board and such. He is in IT, and kept getting confused about why I was calling them peripherals

#

😉

pine bramble Dec 16, 2019, 2:11 AM

#

haha yeah I still explain it to /myself/ a lot. They darn well /are/ peripherals. ;)

#

(there's a core, and everything else, isn't)

fluid wagon Dec 16, 2019, 2:11 AM

#

nods

pine bramble Dec 16, 2019, 2:11 AM

#

this became very obvious when I worked with C8051F330D from Silicon Laboratories in 2005 or so.

fluid wagon Dec 16, 2019, 2:12 AM

#

Trying to explain how the things I was mentioning are/were separate chips not all that long ago...was interesting

pine bramble Dec 16, 2019, 2:12 AM

#

So I'm trying to bring a decent Forth to SAMD.

#

I'm not going to get there, but I'm doing it anyway, as far as I can get.

#

If someone else does a proper Forth, I'll be fine with changing teams, no problem at all. ;)

#

(also mecrisp stellaris seems like it will run on STM32F405 so I am very interested in porting it).

fluid wagon Dec 16, 2019, 2:15 AM

#

I have heard of Forth. I just don't know the target application.

#

😉

pine bramble Dec 16, 2019, 2:15 AM

#

You can fool with it using gforth (it's ported to every platform, pretty much).

#

Leo Brodie's /Starting Forth/ is always recommended as a first reference point.

#

https://www.forth.com/starting-forth/

#

Interactively, you can just 5 3 * . 15 Ok

#

The 15 Ok is the response (often on the same line as the input you typed there)

#

The dot means destructively print the top of the stack. (Pop, with print).

#

Forth is usually integer-only mathematics but some Forths are floating-point.

fluid wagon Dec 16, 2019, 2:20 AM

#

Wouldn't that make it a 4.5? eyeshifts

pine bramble Dec 16, 2019, 2:21 AM

#

5 times 3 is 15

fluid wagon Dec 16, 2019, 2:21 AM

#

Well, I meant Forth with floating point support

pine bramble Dec 16, 2019, 2:22 AM

#

I haven't had my coffee but I'm half smiling as if understanding a joke. ;)

#

to wit I'm afk for a few.

fluid wagon Dec 16, 2019, 2:32 AM

#

Look in the zip

#

it isnt formatted like a standard library

#

at all

#

Adafruit-Trinket-USB

Arduino libraries allowing Trinket to act as USB devices

NOTE: This folder contains multiple libraries. Each library must be installed individually. Simply installing the master folder won't work. Move each library folder out of the master after you unzip into your libraries folder.

#

From the readme in the zip

pine bramble Dec 16, 2019, 2:39 AM

#

USB CDC ACM stuff is for typing back and forth to/from the target.

#

That's why the device is /dev/ttyACM0 in Linux (for example).

#

It's used for serial print.

#

The HID stuff isn't really related very much.

#

The storage stuff (making USB seem like a thumb drive) is a third thing. ;)

fluid wagon Dec 16, 2019, 2:41 AM

#

Make my sketch for the M4s then 😛

#

smiles.

pine bramble Dec 16, 2019, 2:42 AM

#

The M4 development is still very new.

#

Not to many outside-Adafruit dev going on for it wrt some of this.

#

A man named Jake Read did some work.

#

(at MIT iirc)

#

https://gitlab.cba.mit.edu/jakeread/atkstepper17/

#

He had some clock setting stuff and a good ring buffer.

#

Somewhere near here iirc:
https://gitlab.cba.mit.edu/jakeread/atkstepper17/tree/master/embedded/mkstepper-v011/mkstepper-v011

#

https://gitlab.cba.mit.edu/jakeread/atkstepper17/blob/master/embedded/mkstepper-v011/mkstepper-v011/main.c#L45

#

Every once in a while I type in SAMD51 into github and look around. ;)

fluid wagon Dec 16, 2019, 2:50 AM

#

🙂

pine bramble Dec 16, 2019, 2:51 AM

#

I think I'm going to try to just plop a likely .bin into STM32F405 from the mecrisp-stellaris tree and 'see what happens'.

#

https://github.com/jjonethal/mecrisp-stellaris/tree/release/stm32f407 maybe. ;)

#

Yeah I'm pretty sure this one's going to talk on the TX/RX pair (USART) rather than via USB ;)

#

I have a Trinket M0 here (somewhere) all ready to go, for that. ;)

#

I hope this is why I stopped, the last time I tried this. ;)

#

The schematic has a section USB_OTG_FS for the 407 discovery board.

#

Maybe that's a cheat path for SAMD51 ;)

#

'bolt-on USB OTG support' haha

#

PB_10 TX PB_11 RX for Adafruit STM32F405 target

#

https://github.com/stm32duino/Arduino_Core_STM32/blob/master/variants/FEATHER_F405/variant.cpp#L41

#

maybe maybe maybe:
https://github.com/jjonethal/mecrisp-stellaris/blob/release/mecrisp-stellaris-source/stm32f407/terminal.s#L99

#

What are the chances Adafruit uses USART2 on PORTA ;)

#

PB_10 means portb oops. :)

#

@pine bramble Might want to link any related resources here. You can use < and > to delimit the link URL in Discord, to suppress all those images the unsupressed links give. ;)

pine bramble Dec 16, 2019, 4:08 AM

#

PB_11 is labeled USART3 on the Feather STM32F405 schematic.

velvet charm Dec 16, 2019, 4:43 AM

#

Hi guys! I’m having a problem. I’ve got a digispark clone from China, and I tried to set it up for Arduino IDE.
The board package downloads and installs successfully, but there’s a compilation error message when I try blink example. I am using Arduino 1.8.10(latest version) on non-retina MacBook Pro from mid-2012 on latest Mac OS. Thanks!

pine bramble Dec 16, 2019, 5:08 AM

#

I was helping you in my mind. ;) j/k

#

Next week when you fully understand what you did wrong, then right, you might want to document that somewhere.

#

The mecrisp port of STM32F405 is only slightly over my head.

#

I expect I may do it, someday.

velvet charm Dec 16, 2019, 5:37 AM

#

Asking third time!
Hi guys! I’m having a problem. I’ve got a digispark clone from China, and I tried to set it up for Arduino IDE.
The board package downloads and installs successfully, but there’s a compilation error message when I try blink example. I am using Arduino 1.8.10(latest version) on non-retina MacBook Pro from mid-2012 on latest Mac OS. Thanks!

pine bramble Dec 16, 2019, 5:39 AM

#

@velvet charm I didn't have a response, but I saw it both previous times. ;)

#

It's 12:39 in the morning in New York City.

velvet charm Dec 16, 2019, 5:40 AM

#

Ok,sorry

pine bramble Dec 16, 2019, 5:40 AM

#

I can't get anything from just a description. I think and read in code and schematics.

#

Those are the languages that are problem-descriptive for me.

#

Other people will get it from other means of description. ;)

#

Here's a good way to get help on that:
Upload the complete compiler session error messages (anything the compiler put out).
Enable the most verbal compiler message setting.

#

Put that in a file in a good place to view online, such as on github.

#

(file uploads in discord have proven to be a poor medium)

velvet charm Dec 16, 2019, 5:44 AM

#

Ok when I’ll get home I’ll post it

wraith current Dec 16, 2019, 6:45 AM

#

@velvet charm as nis said, you have to at least paste the error message in here.

odd fjord Dec 16, 2019, 3:13 PM

#

you can use one of these https://www.adafruit.com/product/1833

USB Micro-B Breakout Board

Simple but effective - this breakout board has a USB Micro-B connector, with all 5 pins broken out. Great for pairing with a microcontroller with USB support, or adding USB 5V power to a ...

#

Good luck!

velvet charm Dec 16, 2019, 4:28 PM

#

@pine bramble ,@wraith current Finally I got access to a computer! Here's the error:
https://docs.google.com/document/d/1ivnqUr1yu-vIHb-446Lx7ZmLGlCrRrqMK-5FsvCZvZc/edit?usp=sharing

Google Docs

Error!

Arduino: 1.8.10 (Mac OS X), Board: "Digispark (Default - 16.5mhz)" /private/var/folders/cz/jzs110lj2y3bs2p6ygx01b6h0000gn/T/AppTranslocation/86E42661-86C7-409A-A0A6-92F92FC8F241/d/Arduino.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware /private/var/fo...

gray crypt Dec 16, 2019, 4:48 PM

#

Trying to make a PCB for a macro pad using a Pro Trinket in EAGLE. I am pretty new to EAGLE but I have downloaded the schematic for the Pro Trinket. How would I get the dimensions from the Pro Trinket so I could attach the cherry mx switches to it in EAGLE?

north stream Dec 16, 2019, 5:00 PM

#

There is a ULP available to extract parts from an existing design or you can use "get info" and see which library it's from

velvet charm Dec 16, 2019, 5:06 PM

#

I started digispark/trinket theme(attiny85 theme)😂

vast cosmos Dec 16, 2019, 5:19 PM

#

there is so much code in the adafruit arduino libraries that uses the boolean type alias, which latest arduino raises warnings about (every single one)

#

it's going to be a nightmare to clean that up

#

it's also all over the Arduino_Core_STM32 libraries

#

it makes it very difficult to catch and find legitimate warnings (and errors) when you have to navigate through 200+ warnings about boolean deprecation

#

since the arduino build log isnt exactly user friendly. at least it has color coding, albeit warnings and errors are colored the same. i wonder if the arduino theme definition file even lets you distinguish warnings and errors..?

pine bramble Dec 16, 2019, 5:38 PM

#

I think you just sub BOOLMEOW for boolean and then bool for BOOLMEOW and you're done. ;)

#

(or anything else that amuses you - I don't like substitutions that involve the original thing, so I change the original thing first, to something that doesn't match the final thing, when it comes)

north stream Dec 16, 2019, 5:43 PM

#

I remember doing a global regex substitution to swap the second and third arguments to ioctl() when transitioning a driver from v6 to v7 Unix. That was a little intimidating

#

As for a string that doesn't inadvertently match, one person claimed that, after extensive research, the least likely possible string in Unix source code was !Funky!Stuff!

vast cosmos Dec 16, 2019, 6:01 PM

#

how does one determine one string is more or less likely than any other? what sort of metric is that

#

because, then, wouldnt !Funky!Stuff!!Funky!Stuff! be half as likely as the first? furthermore, surely a string that isn't in the english language or in the C grammar would be less likely than that...

#

sorry, not to poke holes in your joke or anything ... 😦

#

oh and you said possible string, which is an important factor

#

@pine bramble i successfully ported my stm32 HAL driver to arduino, and it is functioning wonderfully 🙂

pine bramble Dec 16, 2019, 6:08 PM

#

did you see my writeup of the Forth I found for STM32?

vast cosmos Dec 16, 2019, 6:09 PM

#

i first used a grand central m4 for convenience (it has an SWD port, and lots of pins), but im at this very moment now running it on your stm32f405 feather

#

well no, i just winged it on my own

#

i dont think i even knew about your writeup (what writeup?)

pine bramble Dec 16, 2019, 6:09 PM

#

no 'your' here ;) I had zero to do with its development ;)

#

in #general-chat

wraith current Dec 16, 2019, 7:04 PM

#

@velvet charm Apparently its a problem matching 64/32 bit platforms. Here is an arduino forum post where people have found solutions : https://forum.arduino.cc/index.php?topic=620175.0

avr-g++: bad CPU type in executable

#

namely, downloading the latest build of arduino : http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-8976-BUILD-869-macosx.zip

pliant totem Dec 16, 2019, 8:08 PM

#

hey uh guys, to those who have used an stm32, does anyone know what causes my PC13 led to dim and lit over and over again?

solar sail Dec 16, 2019, 8:15 PM

#

Which STM32 part we talkin'?

potent helm Dec 16, 2019, 8:24 PM

#

@odd fjord I finally made that forum post like you told me to ..

odd fjord Dec 16, 2019, 8:25 PM

#

@potent helm I see -- good luck -- I hope you get some resolution soon.

potent helm Dec 16, 2019, 8:25 PM

#

❤️

#

feel free to let me know if i failed to mention anything

#

I don't head to work for another hour

odd fjord Dec 16, 2019, 8:31 PM

#

You might want to clarify what version of Windows you are using. Other than that , it looks good.

potent helm Dec 16, 2019, 8:32 PM

#

bettre ?

#

feel free to add in anything from the conovs here, as it's unlikely i will get a response before I get to work. and i wont be able to reply at work.

odd fjord Dec 16, 2019, 8:37 PM

#

👋

pliant totem Dec 16, 2019, 9:11 PM

#

@solar sail so once in a while, while running a code, my STM32 would hang and the indicator led (mine is at PC13) glows

#

it dims and brightens

solar sail Dec 16, 2019, 9:16 PM

#

Sounds like an indicator that it's in the bootloader?

pliant totem Dec 16, 2019, 9:16 PM

#

maybe

#

what does it mean tho?

solar sail Dec 16, 2019, 9:17 PM

#

That your code might be causing a hardware exception?

#

I'm not an expert in any STM32 bootloaders, don't use them myself

pliant totem Dec 16, 2019, 9:21 PM

#

hmm

#

hardware exception?

#

well, i am reading an MPU6050 using arduino IDE

#

it runs normally but sometimes, after a while, it crashes

rocky igloo Dec 16, 2019, 9:38 PM

#

@velvet charm This looks like a problem with the Arduino AVR Boards support package you have installed: fork/exec /Users/Denis/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++: bad CPU type in executable
I don't know Macs so I can only guess what "CPU type" might mean. Supposing that PowerPC processors are long in the past, could it have something to do with 32-bit vs. 64-bit Intel chips? In any case, AVR 1.6.7 is quite far out of date so upgrading to the newest version in Boards Manager is at least something to try.

#

Oh, just saw @wraith current above... Yes.

pine bramble Dec 16, 2019, 10:02 PM

#

@rocky igloo

 $ cd /Uers/Denis/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5/bin
 $ file ./avr-g++

#

 $ file ./avr-g++ 
./avr-g++: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.26, BuildID[sha1]=a96cf70b452ab1acb76a923f4aba04eeade2a926, stripped

lime rune Dec 16, 2019, 10:46 PM

#

hello! im looking for a arduino board thats smaller than a arduino nano, but has near the same amount of pins? im building a smartwatch on a pcb, big project, but i have no idea how to put a plain microcontroller on there, i would do that but i really dont know if theres any guides

north stream Dec 16, 2019, 11:28 PM

#

There are a few possibilities, depending on your requirements

#

The microduino and Trinket are a couple

velvet charm Dec 17, 2019, 2:08 AM

#

@rocky igloo I’m using MacBook Pro from 2012,so it doesn’t have a PowerPC processor

rocky igloo Dec 17, 2019, 2:26 AM

#

That was my guess. As others have said, it's much more likely to be a 32-bit -vs 64-bit Intel CPU issue.

north stream Dec 17, 2019, 4:22 AM

#

Not too tough. I usually use some headers plugged into a breadboard for alignment, then plug the stacking headers onto those (upside down) then put the shield on them (also upside down) and solder

north stream Dec 17, 2019, 4:46 AM

#

I assemble it upside down so I can solder from above

#

The stacking header pins are kind of thin and bend easily so I usually end up straightening them some

left cairn Dec 17, 2019, 3:02 PM

#

Quick Q - I’ve been checking out the Adafruit feathers for a while. Are they an Arduino Nano clone-type deal, or more like hats to attach?

safe shell Dec 17, 2019, 5:28 PM

#

@left cairn Feather boards are microcontroller boards with a wide variety of features, most work with Arduino IDE. Feather wings are like hats, for Feather boards. Boards are listed at the top, wings after that: https://www.adafruit.com/feather

Feather - A complete line of development boards from Adafruit that...

Adafruit Industries, Unique & fun DIY electronics and kits : - Tools Gift Certificates Arduino Cables Sensors LEDs Books Breakout Boards Power EL Wire/Tape/Panel Components & Parts LCDs & Displays Wearables Prototyping Raspberry Pi Wireless Young Engineers 3D printing NeoPix...

pine bramble Dec 17, 2019, 5:29 PM

#

I want to switch on and off a powered circuit with transistor controlled from a separately powered circuit. Diagram attached. What am I doing wrong here?

Please @ me if you reply. Thanks.

📎 circuit.png

left cairn Dec 17, 2019, 5:29 PM

#

Okay perfect thanks. So they ARE more like clones than hats. Thanks @safe shell

pliant totem Dec 17, 2019, 7:08 PM

#

greaat, now my stm32duino cannot generate any outputs

#

any ideas?

#

void setup() {
  pinMode(PB3, OUTPUT);
  pinMode(PB4, OUTPUT);
  pinMode(PB9, OUTPUT);
  pinMode(PB11, INPUT);
  pinMode(PA0, OUTPUT);
  Serial.begin(9600);
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(PB3, HIGH);
  digitalWrite(PB4, LOW);
  analogWrite(PB9, 10);
  analogWrite(PA0, 10);
  Serial.println(analogRead(PB11));
  
  // put your main code here, to run repeatedly:

}

#

so this is the code im using, last time i used this, it can generate output signals, but now, nothing happens when i tried to read it

#

alright, something strange is happening

#

now it works

#

uggh, stm32 still confuses me

north stream Dec 17, 2019, 8:19 PM

#

@pine bramble does the control circuit share a common ground with the controlled circuit?

pine bramble Dec 17, 2019, 8:20 PM

#

@north stream nope

north stream Dec 17, 2019, 8:21 PM

#

It will need to, in order to work

pine bramble Dec 17, 2019, 8:23 PM

#

can you help me figure that out? I'm a bit of a novice, and I'm not exactly sure where to start to solve that problem

#

although I'm glad to hear you say that because I suspected something like that was the culprit

#

📎 JPEG_20191217_122509.jpg

#

boom

#

circuit pic

north stream Dec 17, 2019, 8:26 PM

#

It comes down to the idea of a "circuit" : current flows in a loop. To turn on the transistor, current needs to flow from your control circuit, into the base, out the emitter, and back to your control circuit somehow

pine bramble Dec 17, 2019, 8:26 PM

#

current needs to flow from your control circuit, into the base, out the emitter

#

so there needs to be a path to ground from the base, through the emitter

#

that makes sense

#

if I'm not mistaken, adding a ground jumper from the emitter to the ground of the control circuit will cause the slave(vocab?) circuit to also have a path to ground, causing it to always be on?

#

or not, because the transistor gates the flow?

north stream Dec 17, 2019, 8:29 PM

#

That's where it gets tricky

vast cosmos Dec 17, 2019, 8:29 PM

#

@pine bramble is that one of the nano 33 iot boards?

pine bramble Dec 17, 2019, 8:29 PM

#

followup, how can I reliably determine the correct collector, emitter, and base?

#

@north stream I'm intrigued

#

@vast cosmos yes

vast cosmos Dec 17, 2019, 8:30 PM

#

love those little boards, very solid

pine bramble Dec 17, 2019, 8:30 PM

#

yeah, had everything I wanted on it

#

@north stream

That's where it gets tricky

... cliff hanger

north stream Dec 17, 2019, 8:32 PM

#

I usually use an NPN transistor, so different voltage levels are easier to deal with. The PNP configuration pictured means the voltage swing required may be more than your circuit provides.

#

The best bet to determine the correct pinout is a data sheet. Failing that, a cheap transistor tester is a good route forward

pine bramble Dec 17, 2019, 8:45 PM

#

@north stream I will update the circuit based on our conversation and replay later

#

thank you

north stream Dec 17, 2019, 8:46 PM

#

I'd offer more help but I'm in an airport on my phone

vast cosmos Dec 17, 2019, 10:33 PM

#

ugh, the stm32 feather has its SPI pins labeled "MI" and "MO", which according to the docs online, MI = MOSI and MO = MISO

#

what a wreck, is that a normal abbreviation ??

#

ive been trying to figure out why SPI isnt working, and thinking "MI" must mean "master-in" and "MO" mean "master-out"

solar sail Dec 17, 2019, 10:35 PM

#

That's what I'd assume they mean.

vast cosmos Dec 17, 2019, 10:35 PM

#

you mean you'd be mistaken like i was?

solar sail Dec 17, 2019, 10:35 PM

#

Yeah.

vast cosmos Dec 17, 2019, 10:35 PM

#

i wonder if thats a typo on adafruit's part or if they intended this... seems like a glaring oversight IMO

#

IMO = MY opinion, btw, not yours

#

IYO

rocky igloo Dec 17, 2019, 10:52 PM

#

@vast cosmos With the disclaimer that I have a long history of getting things like this backwards, I would assume MI meant "master in" (ie, MISO) and MO meant "master out" (ie, MOSI). But really you might as well cut to the chase at this point and drill with the schematic and the datasheet. Or try it both ways and see which one works. 😁

vast cosmos Dec 17, 2019, 10:57 PM

#

the problem with SPI device pinouts is often when they use the acronyms DIN and DO, as they can mean literally either thing, and you cant be certain if they are writing from the perspective of master or slave. thats why MISO and MOSI are so nice, there is no ambiguity.

#

however, it seems adafruit has introduced a new head scratcher and got the MI and MO acronyms reversed!

#

i think most people would presume the same thing you and I both concluded @rocky igloo

rocky igloo Dec 17, 2019, 11:01 PM

#

MISO and MOSI seem like a noble attempt to avoid the confusion of RX and TX (who's transmitting and who's receiving?) but good intentions and all that. Why we can't have nice things...

vast cosmos Dec 17, 2019, 11:02 PM

#

regardless, it seems the SPI device drivers im trying to use dont actually work with the STM32F405 feather. gonna have to roll my own it seems. for the cheapo ILI9341 TFT and touchscreen

#

for all its awesomeness, this feather really is quite problematic in arduino. i would place the blame at the feet of the arduino community at large though, given the quality of their open sourced software

rocky igloo Dec 17, 2019, 11:10 PM

#

It does seem to be creaking under its own weight these days. Writing new code is always more exciting than fixing someone else's old code--or even your own. There's so much ATmega-specific stuff in there, with ad hoc conditionals added just for this board or that.

runic yacht Dec 18, 2019, 5:16 PM

#

I'm trying to get an Adafruit Feather Huzzah ESP8266 board to request different URLs depending on different button presses. For example, button1 would call URL1, button2 would call URL2, etc. So far I've had success using the Simple HTTP Get code posted on this Adafruit learn guide: https://learn.adafruit.com/adafruit-feather-huzzah-esp8266/using-arduino-ide With it, I'll boot up the board, and it will request the single URL I've specified over and over until I unplug it. My sense is that I can use button states to accomplish this, similar to this guide by Becky Stern: https://www.instructables.com/lesson/Circuit-Triggers-Internet-Action/, but like so many of these guides, they're setup to call on Adafruit IO or some other IoT service, and that's not quite right for what I'm doing. Any tips or help appreciated. Happy to paste the code if it's helpful.

Adafruit Learning System

Adafruit Feather HUZZAH ESP8266

WiFi with built-in battery charging for IoT on-the-go!

runic yacht Dec 18, 2019, 5:42 PM

#

I think another way to say this is, I'm trying to use the Huzzah to trigger different HTTP GET requests assigned to different button inputs.

wraith current Dec 18, 2019, 7:40 PM

#

@runic yacht yeah this is pretty simple to do. Start with a button example program and get it working so that when you press different buttons it prints out different stuff to the serial output monitor. Then build up the http code and connect the separate button presses to different http addresses.

pulsar charm Dec 18, 2019, 8:42 PM

#

does anyone now how inline works under the hood? I chanced upon it while reading source code for a library

#

I'm taking that its something suggestive to the gcc compiler to replace function calls with the actual code to save on precious cpu cycles (source: http://www.cplusplus.com/articles/2LywvCM9/)

#

I've also read that this is done by default for class methods

#

sounds like a lot of good when you are trying to optimize for performance and you are nowhere near program mem limits

rocky igloo Dec 18, 2019, 9:19 PM

#

@pulsar charm $ cat test.c ```C #include <stdio.h>

static inline int foo(int x)
{
return x*2;
}

int main(void)
{
printf("%d\n", foo(6));

return 0;
}```

#

$ gcc -S test.c

#

$ cat test.s

#

    .text
    .type    foo, @function
foo:
.LFB0:
    .cfi_startproc
    pushq    %rbp
    .cfi_def_cfa_offset 16
    .cfi_offset 6, -16
    movq    %rsp, %rbp
    .cfi_def_cfa_register 6
    movl    %edi, -4(%rbp)
    movl    -4(%rbp), %eax
    addl    %eax, %eax
    popq    %rbp
    .cfi_def_cfa 7, 8
    ret
    .cfi_endproc
.LFE0:
    .size    foo, .-foo
    .section    .rodata
.LC0:
    .string    "%d\n"
    .text
    .globl    main
    .type    main, @function
main:
.LFB1:
    .cfi_startproc
    pushq    %rbp
    .cfi_def_cfa_offset 16
    .cfi_offset 6, -16
    movq    %rsp, %rbp
    .cfi_def_cfa_register 6
    movl    $6, %edi
    call    foo
    movl    %eax, %esi
    movl    $.LC0, %edi
    movl    $0, %eax
    call    printf
    movl    $0, %eax
    popq    %rbp
    .cfi_def_cfa 7, 8
    ret
    .cfi_endproc
.LFE1:
    .size    main, .-main
    .ident    "GCC: (Ubuntu 4.8.4-2ubuntu1~14.04.4) 4.8.4"
    .section    .note.GNU-stack,"",@progbits```

#

$ gcc -O -S test.c

#

$ cat test.s

#

    .section    .rodata.str1.1,"aMS",@progbits,1
.LC0:
    .string    "%d\n"
    .text
    .globl    main
    .type    main, @function
main:
.LFB25:
    .cfi_startproc
    subq    $8, %rsp
    .cfi_def_cfa_offset 16
    movl    $12, %edx
    movl    $.LC0, %esi
    movl    $1, %edi
    movl    $0, %eax
    call    __printf_chk
    movl    $0, %eax
    addq    $8, %rsp
    .cfi_def_cfa_offset 8
    ret
    .cfi_endproc
.LFE25:
    .size    main, .-main
    .ident    "GCC: (Ubuntu 4.8.4-2ubuntu1~14.04.4) 4.8.4"
    .section    .note.GNU-stack,"",@progbits```

#

GCC doesn't inline with optimization off unless you also specify __attribute__((always_inline)). In the first case there's a label foo: pointing to the subroutine entry point. In the second case, with the -O option, the value 6 * 2 = 12 has been pre-calculated and is loaded with the movl $12, %edx instruction. And foo is nowhere to be seen. https://gcc.gnu.org/onlinedocs/gcc/Inline.html

Using the GNU Compiler Collection (GCC): Inline

pulsar charm Dec 19, 2019, 2:45 AM

#

fascinating

#

does the arduino compiler always run with the -O option?

#

I guess this is only really useful for compile time only calculations, and not run-time like data manipulations off sensor readings

rocky igloo Dec 19, 2019, 4:44 AM

#

@pulsar charm When I've snooped on it, Arduino has always run GCC with -Os, optimize for size. Adafruit's M4 board support adds an optimization level option to the Tools menu. I haven't seen that with other microcontrollers, but there might some other way or ways to control it.

pliant totem Dec 19, 2019, 4:54 AM

#

guys, i need urgent help. As you can see, i am tasked to make my own arduino nano board with smd. Here are the following schematic and board im using

#

📎 unknown.png

#

📎 unknown.png

#

📎 unknown.png

#

📎 unknown.png

#

📎 unknown.png

#

📎 unknown.png

#

and here is the board schematic

📎 unknown.png

#

top half

#

📎 unknown.png

#

bottom half

#

📎 NanoV3.3_-_Copy_-_Copy.brd

#

here are the files if anyone is interested in checking it in full detail

📎 NanoV3.3_-_Copy_-_Copy.sch

#

I have soldered every component diligently and checked every single connections with a multimeter

#

it shows no sign of shorting

#

but when i powered it using a +5V source from another arduino for bootloader burning purposes, some sparks showed up between the +5V and GND pins of the ATMEGA328P-AU chip

#

i've cleaned the connections, disconnect and reconnect the chip multiple times to no avail

#

can anyone help me diagnose what is wrong with my setup and what is probably the cause of my problem?

#

im sorry if it seems complicated, but i need serious help because im new to making a board with SMD parts

#

and i have no clue if i'm doing something wrong

#

if anyone could help me here or dm me, that would be really appreciated

#

i know this is my fault, but i have less than 24 hours until i have to submit any progress at all, so it would be really appreciated if i get any help i can get

#

any hints, pointers, and maybe solutions, anything

surreal pawn Dec 19, 2019, 11:58 AM

#

Ideally you'd initially power the board from a bench supply with a current limit so that you initially set the voltage limit to 5v and current limit to 50mA or something that wouldn't break anything on your board so you can find out if you have any shorts or incorrect wiring without blowing anything up

#

and also for large complicated boards you'd only assemble as little as possible. for example you might just do the voltage regulator and associated components first, test those, then add the cpu and caps, test that and see if you can program it with icsp, then add the ftdi and test that

#

anyway, at 5v you shouldn't see arcing between pins on your cpu unless you're either sending way too much current somewhere or you're not actually limited to 5v

#

make sure your parts are on the correct way around. the pcb screenshot you have doesn't have an obvious cpu orientation

#

you don't have filter caps very close to the cpu but that isn't your problem at the moment

#

anyway check for bridges between pins on your FTDI and cpu. a stereo microscope is a huge help for this but a normal microscope or other magnifier also help ok. You can usually clean up bridges with flux and solder wick pretty easily

#

I'm not going to follow every trace on your board to try to guess what's going on. I'm just randomly up in the middle of the night to ramble for a bit before going back to sleep

#

the routing of your power traces isn't ideal

pliant totem Dec 19, 2019, 12:39 PM

#

Oh? How does that affect the board @surreal pawn ?

surreal pawn Dec 19, 2019, 12:42 PM

#

the power draw of the cpu will rapidly change so you want the power traces fatter and more direct (less inductance = less voltage drop when current draw increases every cycle)

#

for the same reasons you want the filter caps directly next to the pins on the pcb

#

your avr power routing wraps around the entire height of the board to feed 5v and gnd

pliant totem Dec 19, 2019, 2:02 PM

#

which means @surreal pawn ?

fluid wagon Dec 19, 2019, 2:40 PM

#

Good morning. What is the proper library to use to manipulate the RTC on the M4? Most of the ones I am seeing are for external RTCs

safe shell Dec 19, 2019, 3:40 PM

#

@fluid wagon https://circuitpython.readthedocs.io/en/latest/shared-bindings/time/__init__.html

fluid wagon Dec 19, 2019, 3:41 PM

#

Well, I am looking for info for using it with the arduino core

safe shell Dec 19, 2019, 3:42 PM

#

oops, sorry, wrong channel

fluid wagon Dec 19, 2019, 3:42 PM

#

not circuitpython, I am going to assume there is an arduino library to hit that up with

#

I do appreciate the link though 😉

safe shell Dec 19, 2019, 3:45 PM

#

I wonder if there is an Arduino equivalent to CP's rtc.set_time_source(r)

fluid wagon Dec 19, 2019, 3:45 PM

#

I imagine there is. The issue is most of the libraries I am coming across are for accessing separate hardware, like a DS1307 or DS3231 and such

#

Since I know the MCU has an internal RTC, my plan is to set up an ntp client as part of my project, and just use that to populate the RTC periodically

safe shell Dec 19, 2019, 3:47 PM

#

Right, that's exactly what I do

#

even HTTP headers work in a pinch

fluid wagon Dec 19, 2019, 3:48 PM

#

nods

#

I'm just trying to work out how to use all the available hardware on the board, rather than adding external components needlessly.

#

Like, the SPI Flash being accessible through the arduino core, is a bit awkward, but, a nice touch

safe shell Dec 19, 2019, 3:50 PM

#

How about https://www.arduino.cc/en/Reference/RTC

Arduino - RTC

Open-source electronic prototyping platform enabling users to create interactive electronic objects.

#

seems to be targeted to SAMD

fluid wagon Dec 19, 2019, 3:51 PM

#

I was looking at that. But, the Zero and the MKRZero are M0s, not M4s

#

So, I was concerned it might not work

safe shell Dec 19, 2019, 3:51 PM

#

can't hurt to try, else check the source and see if it's workaround-able

fluid wagon Dec 19, 2019, 3:52 PM

#

(ARM Cortex is completely new to me, I don't know the differences between them hardware wise.)

fluid wagon Dec 19, 2019, 4:10 PM

#

Yeah, RTCZero doesn't seem to like the board definition for the M4 Express

safe shell Dec 19, 2019, 4:47 PM

#

😦

verbal pebble Dec 19, 2019, 9:58 PM

#

I just received my Itsybitsy M0 Express and tried some CircuitPython code for my Neopixel but found interesting codes in Arduino IDE code and since I'm not good enough to convert it to CP, I'd like to give a try to Arduino IDE but can't get through the Bootloader thing 😦 anyone has suggestion or walkthru?

odd fjord Dec 19, 2019, 10:16 PM

#

@verbal pebble have you gone through this guide?https://learn.adafruit.com/introducing-itsy-bitsy-m0/setup

Adafruit Learning System

Introducing ItsyBitsy M0 Express

What's smaller than a Feather but larger than a Trinket? It's an ItsyBitsy!

verbal pebble Dec 19, 2019, 10:25 PM

#

@odd fjord Yeah, well kinda, I got stuck at the second page up to the "Blink" code, but still my IBM0 Expresse still is in Circuit Python :/

odd fjord Dec 19, 2019, 10:25 PM

#

not sure what you mean?

verbal pebble Dec 19, 2019, 10:31 PM

#

@odd fjord lol I'm not sure what I meant either 🤦‍♂️ , I'll keep reading!

But I flashed the ItsyB with a UF2 file and ran son PY script easily, but am I right to think that if I wan to run INO files I'll have to flash it differently?

odd fjord Dec 19, 2019, 10:33 PM

#

You just compile and upload the .ino "sketch" via the Arduino IDE -- it will overwrite the .uf2 file-- if you want to go back to CircuitPython , just double tap reset tp get into the bootloader and copy the .uf2 file again. Arduino takes care of it loading the file for you.

#

so there is no "preparation" for using Arduino -- just select the Board and Port in the "Tools" menu

verbal pebble Dec 19, 2019, 10:35 PM

#

Ooh ok, that "easy", well I'll try it 😉 Thanks @odd fjord

odd fjord Dec 19, 2019, 10:35 PM

#

Good luck -- Have fun!

fluid wagon Dec 19, 2019, 11:38 PM

#

Hello. So many new things. How would I go about asking for the Adafruit WiFiNINA library to be updated with the changes to the Arduino one for version parity? 🙂

#

(Adafruit WiFiNINA=1.3.0, Arduino WiFiNINA=1.4.0)

verbal pebble Dec 20, 2019, 1:25 PM

#

@odd fjord Got it to work, I mean that "Blink" code from the guide you shared! Now I'll jump the gun and see if I can find an Arduino code to run my RGBW Neopixel strip ^^

fluid wagon Dec 20, 2019, 1:53 PM

#

The library has examples, just watch your amperage 😉

verbal pebble Dec 20, 2019, 2:03 PM

#

Unless I'm wrong, it seems there is no Arduino code made to run RGBW Neopixel strip on Itsybitsy M0 Express and unless I missed something... and FastLED library do not work with RGBW 😦

#

I found this work around https://www.partsnotincluded.com/programming/fastled-rgbw-neopixels-sk6812/ but I'll need to figure out how to port it to the itsybitsy M0

Parts Not Included

FastLED with RGBW NeoPixels (SK6812) - Parts Not Included

Someone has shown me a way to control RGBW NeoPixels (SK6812 chipset) using the FastLED library and a small additional header file.

odd fjord Dec 20, 2019, 2:08 PM

#

@verbal pebble did you try the adafruit_neopixel library https://github.com/adafruit/Adafruit_NeoPixel

GitHub

adafruit/Adafruit_NeoPixel

Arduino library for controlling single-wire LED pixels (NeoPixel, WS2812, etc.) - adafruit/Adafruit_NeoPixel

verbal pebble Dec 20, 2019, 2:09 PM

#

Not yet 😅 I'll try it now, probably easier than the FastLED workaround! Thanks again @odd fjord

odd fjord Dec 20, 2019, 2:10 PM

#

good luck!

#

more info here https://learn.adafruit.com/adafruit-neopixel-uberguide/arduino-library-installation

Adafruit Learning System

Adafruit NeoPixel Überguide

Everything you always wanted to know about Adafruit NeoPixels but were afraid to ask

#

but as you discovered Note: FastLED currently works only with RGB NeoPixels; RGBW pixels are not yet supported. At all. You will get incorrect and unpredictable colors.

fluid wagon Dec 20, 2019, 2:19 PM

#

Hey @odd fjord, do you know of a library to manipulate the RTC on the M4 Metro?

#

The one from Arduino for the M0 doesn't work sadly

odd fjord Dec 20, 2019, 2:19 PM

#

@verbal pebble this might also be of interest https://learn.adafruit.com/dma-driven-neopixels/overview

Adafruit Learning System

DMA-Driven NeoPixels

NeoPixels and interrupts living in peace and harmony!

#

@fluid wagon I'm not very well versed in Arduino capabilities -- I spend most of my time with CircuitPython. I believe it is well supported there

fluid wagon Dec 20, 2019, 2:22 PM

#

I saw that. Unfortunately, my experience is more with arduino, and I have no experience with python 😉

odd fjord Dec 20, 2019, 2:25 PM

#

@fluid wagon possibly this https://github.com/arduino-libraries/RTCZero/issues/37

GitHub

SAMD51 support but unsure if an M4 processor should be included in...

I have code ready but would need to know if it should be added to this library ? or suggest another one

fluid wagon Dec 20, 2019, 2:26 PM

#

Maybe

#

I'll give it a try. I kinda understand programming an AVR in C++, at least, the very basics, I've been trying to find info on programming a cortex in just C++ but, I've been striking out. That is beyond the scope of here but yeah, I'm kinda trying to get a handle on it so I can "fix" libraries I need

odd fjord Dec 20, 2019, 2:29 PM

#

It's not clear that it ever got merged but I guess you can get it from the authors fork https://github.com/ericbaril72/RTCZero/tree/SAMD51_E54

GitHub

ericbaril72/RTCZero

RTC Library for Arduino Zero and MKR1000. Contribute to ericbaril72/RTCZero development by creating an account on GitHub.

fluid wagon Dec 20, 2019, 2:29 PM

#

nods It definitely isn't merged, I tried the Arduino version and it burned gloriously during compilation

odd fjord Dec 20, 2019, 2:33 PM

#

github is such a great place to find ways of doing things -- sometimes they even work....

fluid wagon Dec 20, 2019, 2:33 PM

#

How long ago were the M4s released? Is it that I'm just looking for things that are "too new"?

#

Not the MCU, like, the Adafruit products

odd fjord Dec 20, 2019, 2:34 PM

#

trying to recall but it's only been a year or so.. I'm surprised that the arduino library has not implmented it yet

fluid wagon Dec 20, 2019, 2:35 PM

#

Also, is there any info about those floating point libraries? the DSP ones?

#

Or is that...just magic in the Arduino headers

odd fjord Dec 20, 2019, 2:38 PM

#

not sure what you are referring to?

fluid wagon Dec 20, 2019, 2:39 PM

#

From here https://www.adafruit.com/product/3382

#

Floating point support with Cortex M4 DSP instructions

odd fjord Dec 20, 2019, 2:42 PM

#

ah -- sorry -- I have no idea...

north inlet Dec 20, 2019, 4:30 PM

#

hello all 🙂

#

I have a ? about using arduino with my trinket m0

safe shell Dec 20, 2019, 4:35 PM

#

@north inlet Ask away

north inlet Dec 20, 2019, 4:37 PM

#

do i use the same steps when i was using a trinket 3v with arduino

#

right now i got a trinket m0 like to program with arduino Adafruit_NeoPixel

safe shell Dec 20, 2019, 4:44 PM

#

@north inlet Should be. Just select your board, figure out which port it's on, and mind your pinouts.

#

https://learn.adafruit.com/adafruit-trinket-m0-circuitpython-arduino/arduino-ide-setup

Adafruit Learning System

Adafruit Trinket M0

CircuitPython or Arduino IDE on this tiny little microcontroller board

north inlet Dec 20, 2019, 4:45 PM

#

will arduino have that board on the list

safe shell Dec 20, 2019, 4:47 PM

#

On the page I linked, it tells how to add the Adafruit boards

north inlet Dec 20, 2019, 4:47 PM

#

ok.ty

#

🙂

verbal pebble Dec 20, 2019, 5:39 PM

#

@odd fjord Works goooood 😄

#

@odd fjord me again :p is there an equivalent of CPython "touchio" in Arduino, I'd like to use one of the cap touch pins to control the NeoPixel strip

odd fjord Dec 20, 2019, 5:57 PM

#

I think this will do it https://github.com/adafruit/Adafruit_FreeTouch

GitHub

adafruit/Adafruit_FreeTouch

A QTouch-compatible library. Contribute to adafruit/Adafruit_FreeTouch development by creating an account on GitHub.

verbal pebble Dec 20, 2019, 5:57 PM

#

Thanks! 😄

dull ridge Dec 20, 2019, 6:03 PM

#

Why does this not work ?

#

📎 unknown.png

drifting dock Dec 20, 2019, 8:25 PM

#

I'm working with a wifi library that wants parameters passed by reference. The problem is if I want to create the parameters in a loop, the memory is immediately lost. Is there any way I can prevent the parameter objects from being destroyed until the parent loop is complete?
Ex:

// Adding parameters in the for loop
for( ... ){
    WiFiManagerParameter p(k.c_str(), formatted.c_str(), s.c_str(), length, type.c_str());            
    wifiManager.addParameter(&p);
}
// They still need to be in memory down here

woven mica Dec 20, 2019, 8:35 PM

#

I think you need to create an array of pointers to WiFiManagerParameter, and then in the loop create the object using the new keyword and save the object into the array (if the platform supports dynamic objects)

drifting dock Dec 20, 2019, 8:40 PM

#

with new I have to dereference them myself right?

north stream Dec 20, 2019, 8:40 PM

#

@dull ridge It seems to be trying to put an object file into an "obj" directory and failing, possibly because that directory does not exist.

woven mica Dec 20, 2019, 8:42 PM

#

You dont have to dereference it if you need to pass its pointer to the Wifimanager

#

newreturns a pointer

drifting dock Dec 20, 2019, 8:44 PM

#

yeah but with new it stays in memory until delete is called no?

woven mica Dec 20, 2019, 8:45 PM

#

yes

drifting dock Dec 20, 2019, 9:12 PM

#

for some reason putting in a name like "test" in the code above instead of k.c_str() works, but otherwise it also loses that data, is that also because of dereferencing?

north inlet Dec 20, 2019, 9:15 PM

#

hello all . i got a ? I am trying to upload a project onto my trinket m0 and it say couldn't find a board on selected port.can someone help me .?

wraith current Dec 20, 2019, 9:20 PM

#

which port is selected ?

#

@north inlet

north inlet Dec 20, 2019, 9:22 PM

#

it say com5 for the trinket m0 i am using

#

can i change it to that port

wraith current Dec 20, 2019, 9:23 PM

#

Maybe try the manual bootloader

📎 Screen_Shot_2019-12-20_at_20_Fri_11.22.55_AM.png

north inlet Dec 20, 2019, 9:23 PM

#

ok

pine bramble Dec 21, 2019, 12:08 AM

#

My crazy assembler program:
https://github.com/wa1tnr/eforth-stm32f4x-a/blob/tmp-assy-aa-/gas.d/experiment-aa.s

#

I have barely any clue at all with this.

rocky igloo Dec 21, 2019, 12:39 AM

#

Way to dig into that, @pine bramble. "A journey of a thousand miles begins with a single step."

#

My favorite cheat is writing some code in C and compiling with the -S flag, then reading the assembly language file it creates.

pine bramble Dec 21, 2019, 12:50 AM

#

@rocky igloo There you go.

#

My blinky in eForth does work. ;)

#

https://github.com/wa1tnr/eforth-stm32f4x-a/blob/tmp-assy-aa-/gas.d/working_Blinky-b.fs

rocky igloo Dec 21, 2019, 12:53 AM

#

Once you get to blinky, the world's your oyster. 😁

sweet iris Dec 21, 2019, 2:07 AM

#

Can anyone help me with an esp8266 problem I have (I think it should go here)? I'm trying to upload code to a circuit I made using a feather esp8266, but no matter what code I upload, I get an error saying "esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0x00)". I've made sure that the usb cable is able to send data, and I'm only uploading the example blink code, so I'm not sure what's wrong.

north stream Dec 21, 2019, 2:30 AM

#

I'm nearly to blinky, but had a soldering issue.

dull ridge Dec 21, 2019, 8:31 AM

#

Am I doing something wrong?

📎 unknown.png

pulsar charm Dec 21, 2019, 9:25 AM

#

@sweet iris That happens when you dont choose the correct bootloader if you're using the Arduino IDE

versed star Dec 21, 2019, 9:39 AM

#

Hi guys, i have a question on 220v/5v and reed switches. I cannot find any answer about it online and the risk of it. So do you think that a simple 220v wire basically the wire of your coffee table lamp can trigger a simple reed switch by putting it next to the 220v wire? If not making a coil with the 220v wire around a nail will it create a very little electro magnet that can trigger the reed, or will it create a killing machine. (I basically want to use a simple reed switch with my duino to know if current is flowing throught a 220v wire)

#

PS: i dont want to use typical current sensor of any kind, it is expensive and i dont really need to mesure current, just need to know if the 220 is ON or OFF

verbal pebble Dec 21, 2019, 11:42 AM

#

@versed star I'm really new here and on anything Arduino related, but my guess is that you could use a coil around the 220v and use your Arduino to measure/sense its inductance in the Hot and Cold state and use this as your trigger... I dunno, I might be wrong. I found this : https://www.electronoobs.com/eng_arduino_tut10_3.php

north inlet Dec 21, 2019, 12:19 PM

#

hello all 🙂

#

hello all 🙂 can someone help me .I am using the trinket m0 to run a neopixel strip .?
I need some help please . 🙂

odd fjord Dec 21, 2019, 12:22 PM

#

What have you tried and what is not working?

north inlet Dec 21, 2019, 12:24 PM

#

I try going thru the arduino

odd fjord Dec 21, 2019, 12:25 PM

#

did you get the "blink" sketch to work https://learn.adafruit.com/adafruit-trinket-m0-circuitpython-arduino/using-with-arduino-ide#blink-6-21

north inlet Dec 21, 2019, 12:26 PM

#

I have not .

#

upload that ?

odd fjord Dec 21, 2019, 12:27 PM

#

yes -- it is a good way to test that you can upload

north inlet Dec 21, 2019, 12:27 PM

#

ok. I am going to do that now.

odd fjord Dec 21, 2019, 12:28 PM

#

Good luck -- I have to go offline for awhile but hopefully others will be around to help

north inlet Dec 21, 2019, 12:28 PM

#

ok.ty 🙂

verbal pebble Dec 21, 2019, 12:28 PM

#

@odd fjord 🥺

odd fjord Dec 21, 2019, 12:29 PM

#

@verbal pebble Hello!

verbal pebble Dec 21, 2019, 12:30 PM

#

@odd fjord I was kidding with my pleading face, I'll talk to you soon, see ya

odd fjord Dec 21, 2019, 12:30 PM

#

OK -- I'll be back later 🙂

north inlet Dec 21, 2019, 12:38 PM

#

hello . i just upload the blink on to my trinket m0 and got a redefinition of 'void setup( )'

versed star Dec 21, 2019, 12:44 PM

#

@verbal pebble Hi thank you, it just seems a little complicated, i like the solution where you just tape ON a reed switch next to the 220v wire. i have read online that 220v wire produce a little magnetic field on its own. so my guess is that if you just tape on a reed switch on the wire it should work. unfortunately i dont have a reed switch home so i can try with. And i have read that reed switch has a sensivity called AT which can be trigger only by the north pole of earth.

#

So my guess is that with a reed switch 5AT it should be enough to work with 220v wire. And i will just need to hook that up to 5v and one of the digital PIN of the arduino with a little pull down resistor

verbal pebble Dec 21, 2019, 1:23 PM

#

@versed star I'm really not convinced that a reed switch will be triggered by your cable current, not even a paper clip would be "attracted"...

#

Out of curiosity, I wrapped 35cm of ~14ga cable around my dryer (240v) and tried to measure something, anything (V, Ohm, Amp... (except inductance, my multimeter can't do it) while running and got nothing, 0, nada. But I'm sure it would have measure an inductance variation otherwise... food for thought

📎 IMG_0765.jpg

versed star Dec 21, 2019, 1:35 PM

#

Good to know. From what i have read reed switches can be very very sensitive.

verbal pebble Dec 21, 2019, 1:35 PM

#

give it a try, you'll learn something 😉

#

Have anyone tried the Adafruit_Freetouch? I'm trying to figure out how to use it as a switch. As a starter (using Blink code from guide below), I'm trying to turn On and Off the Built In LED of my ItsyB, before trying it out on Neopixel strip https://learn.adafruit.com/introducing-itsy-bitsy-m0/using-with-arduino-ide

safe shell Dec 21, 2019, 2:40 PM

#

@versed star I use these to detect 120v power flow: https://www.powerswitchtail.com/powerstate-tail Unfortunately, they weren't cheap, they are discontinued, and I have some devices that don't flow enough power to trip them. Long story short... I'm also looking for a safe / non-invasive solution.

versed star Dec 21, 2019, 2:55 PM

#

@safe shell for invasive solution, i was also thinking about using a phone charger then hooking up the 5v of the USB phone charger to a digital PIN. But i dont like this solution either and not so sure it is a good solution. Will it damage the arduino to input 5v into a PIN from an outside power source?

#

And how much will it consume.

safe shell Dec 21, 2019, 3:36 PM

#

@versed star I've used a 5v adapter as a (web-connected) digital output, but not for sensing. The phone charger would be tapped into the power lines of the lamp, but downstream of the switch? Invasive, yes, but it should work. I'm not the expert, but I'm sure there's some protection you could add between the 5V charger and the micro input pin. Would be nice if there's a non-invasive solution.

reef pollen Dec 21, 2019, 3:51 PM

#

Where do you guys go to discover new types of arduino board projects?

I'm working on a project and like to get the smallest/cheapest available board that still meets my design requirements

Needs built in usb programming/serial communication.

More that 8k prog mem

At least 2 digital in/out

I've found/tried a few attiny85 boards, but they don't have hardware serial, nor enough memory for software serial. (digispark, trinket) trinket pro is ok, but expensive. Is there anything physically smaller than an arduino nano clone? Thx

safe shell Dec 21, 2019, 3:51 PM

#

Trinket M0? n/m, that's more than a Trinket

reef pollen Dec 21, 2019, 3:53 PM

#

That's the same size as the trinket, but currently we're dependant on a library that uses 16mhz avr assembly code.

#

So, until we decide to rewrite it for something else, we're stuck with 16mhz avr

#

A tiny atmega328 would probably be enough, because we could use software serial with that much extra progmem

#

Or an attiny85 that has hardware serial

#

Or some cheap way to communicate/program over usb that doesn't use a bootloader (to save program room)

#

Right now it looks like an arduino nano clone is the smallest we can get while still only being $3

#

Which I shouldn't complain. That's pretty cheap

#

And plenty of memory

#

Danggnabit (I got censored) did I just answer my own question?

#

I wish Nanos were physically smaller. I don't need 20 gpio pins!

#

Or a voltage regulator

#

Seems like I'm gonna have to make my own custom pcb. Lol

sweet iris Dec 21, 2019, 5:31 PM

#

@pulsar charm What do you mean by the correct bootloader? I have the right board selected and I've uploaded code before, so I don't know what would have changed to make it stop working

pulsar charm Dec 21, 2019, 6:15 PM

#

@sweet iris I trust that you've got the right board selected, but do double check and its something I see all the time when I swap between atmega and esp8266 platforms

#

Also when this happens when uploading, make sure your board is completely free of any pinout connections

#

sometimes messing with rx/tx can corrupt serial input

#

or a huge power draw

hazy garden Dec 21, 2019, 6:26 PM

#

@versed star I'dd get a cheap non contact tester pen, mod it to your needs

versed star Dec 21, 2019, 6:37 PM

#

@Paski not a bad idea, thank you! Ill order one but this isnt so cheap.

pulsar charm Dec 21, 2019, 6:46 PM

#

@versed star I know you're not looking for current sensors but https://www.seeedstudio.com/Non-invasive-AC-Current-Sensor-10A-ma-p-2052.html... $8 isn't so bad tbh

Non-invasive AC Current Sensor (10A max)

Input Current: 0~10A AC
Output Mode: 0~1V
Non-linearity: ±3%

#

Alternatively you could just go for a cheap hall effect sensor

#

I know its commonly used as tamper-proofing safeguards for critical electronics like house alarms

#

But its not something I've actually tried yet, I've only used current sensors to measure current

versed star Dec 21, 2019, 6:50 PM

#

I have tried this one. it is unreliable and only works for high current flowing. For example a simple 220v LED the analogRead is only going from 0-1 which should go 0-1024. And i dislike the way the code has to be. I would prefert a simple digitalRead or a good analog read that goes from 0-higher than 1 🙂

#

I actually tried this one: Gikfun DIY 5 A Gamme AC Transformateur de courant module de capteur de courant module pour Arduino Electronic débutant DIY (lot de 5 jeux) Ek1344 X 5U https://www.amazon.fr/dp/B07H3NBZBS/ref=cm_sw_r_cp_apa_i_bNM.DbZ5SR133

pulsar charm Dec 21, 2019, 6:52 PM

#

wait what? I think this has to be matched with an external ADC

versed star Dec 21, 2019, 6:52 PM

#

But the technology is the same

pulsar charm Dec 21, 2019, 6:52 PM

#

to get the resolution you need

versed star Dec 21, 2019, 6:54 PM

#

Matched with an external ADC?

pulsar charm Dec 21, 2019, 6:57 PM

#

Ok I see what you mean

#

the output voltage goes from 0-1V

#

forget what I said about the ADC, I was confused with another sensor

#

so your issue is about resolution on the 1V, when you're simply looking to see if its on/off?

versed star Dec 21, 2019, 7:11 PM

#

Yes the resolution is so low that it go from ON and OFF randomly. I was thinking maybe about swapping the resistor but im not sure that will change anything

wraith current Dec 21, 2019, 8:44 PM

#

@reef pollen Try the wifikit8 https://heltec.org/project/wifi-kit-8/

Heltec Automation

leehunter8801

WiFi Kit 8

Visit the post for more.

reef pollen Dec 21, 2019, 8:46 PM

#

That's kinda cool. I don't particularly need a screen or wifi, but thx.

#

Still good to know about

wraith current Dec 21, 2019, 8:49 PM

#

i guess a nano clone would be cheaper that $10 shipped

pine bramble Dec 21, 2019, 8:53 PM

#

If something costs $10 including shipping, someone isn't getting paid for their labor.

odd fjord Dec 21, 2019, 8:55 PM

#

@north inlet Did you get your Trineket M0 working?

verbal pebble Dec 21, 2019, 11:04 PM

#

@odd fjord have you played with Adafruit_FreeTouch library?

versed star Dec 21, 2019, 11:05 PM

#

@safe shell @pulsar charm @verbal pebble i think this will do it
US $2.28 28%OFF | 5A Overcurrent Protection Relay Module AC Current Detection Board Sensor 12V/5V Relay Dec12 Dropship
https://a.aliexpress.com/CFN0NXoc

US $2.28 28%OFF | 5A Overcurrent Protection Relay Module AC Curre...

#

This guy helped a lot https://youtu.be/cDuObAR42Nw

YouTube

Ralph S Bacon

#114 No contact mains detector for Arduino & Pi 🥧(just 10 compo...

Safer Mains (Home Electricity) Detection
How to detect the presence of mains electricity (in your home) using a RasPi or Arduino

So I really want a SAFE way to detect mains in my workshop so can check whether I have left the lights, or more importantly, the heater on.

This ...

▶ Play video

#

And thank you guys too

verbal pebble Dec 21, 2019, 11:07 PM

#

Fait plaisir 😉

winged wren Dec 22, 2019, 2:18 AM

#

📎 Screenshot_52.png

#

Anyone help me to rectify this 'DHT' does not name a type error

north stream Dec 22, 2019, 4:28 AM

#

@pine bramble INA169 is current only, INA260 is current and voltage, and can do voltage shifting for high-side monitoring

winged wren Dec 22, 2019, 4:16 PM

#

Senduptime error😔

📎 Screenshot_6.png

wraith current Dec 22, 2019, 8:25 PM

#

@winged wren scroll up to see the line that uses senduptime. Need more code to diagnose.

lunar yew Dec 22, 2019, 9:21 PM

#

Rust server by sanglierNRV nitra

verbal pebble Dec 23, 2019, 2:27 AM

#

in my learning process I merged 2 examples codes of Adafruit Neopixel & Freetouch librarie, but I guess there is something wrong with it (probably in void loop() ), could anyone tell me what it is?

📎 buttoncycler_touch.ino

winged wren Dec 23, 2019, 3:16 AM

#

@Dubhouze-Tavis#7630

📎 error_codes_new_dht.txt 📎 new_dht22_1111.ino

rocky igloo Dec 23, 2019, 4:13 AM

#

(name deleted) Looks like both SimpleTimer.h and BlynkSimpleSerialBLE.h are trying to define SimpleTimer to two different things. Not enough room in this town for both of 'em.

#

Ooops, sorry!! That's @winged wren's error msg. My bad.

#

@verbal pebble A lot easier to check if you include the error messages!😄

winged wren Dec 23, 2019, 4:17 AM

#

@rocky igloo thx

verbal pebble Dec 23, 2019, 12:17 PM

#

@rocky igloo I got no error message, I messed it good enough to have it partially working :p

mild elk Dec 23, 2019, 8:18 PM

#

Has anyone experience with RDA5708M FM tuner? I'd like to receive a signal at 68.5MHz, but I can't get it to work. I tried reverse-engineering the Radio library to work out what I need to send to the chip but it doesn't work no matter what I try

#

I can post my code, just make sure to ping me

wraith current Dec 24, 2019, 12:27 AM

#

@winged wren did you get it all sorted?

winged wren Dec 24, 2019, 12:29 AM

#

@wraith current yeah

stable forge Dec 24, 2019, 1:51 PM

#

@mild elk I don't have time to look at your code, but datasheet is here: https://cdn.instructables.com/ORIG/F41/ANYU/IN35R4FX/F41ANYUIN35R4FX.pdf

#

datasheet is from here: https://www.instructables.com/id/Arduino-Controlled-Tiny-FM-Radio/

mild elk Dec 24, 2019, 1:52 PM

#

I have that datasheet and I read it several times

stable forge Dec 24, 2019, 1:52 PM

#

is that the same library you are using?

mild elk Dec 24, 2019, 1:53 PM

#

Yes

stable forge Dec 24, 2019, 1:53 PM

#

ok, i have no new advice to offer 🙂

#

i thought you were having to reverse-engineer the I2C commands from the library

mild elk Dec 24, 2019, 1:54 PM

#

I tried that but failed

copper summit Dec 24, 2019, 8:13 PM

#

Hi everyone, I was hoping someone could advise me on a power question: I'm using Neopixels (5v signal) with trinket m0(3.3v logic). I've installed the logic shifter, and everything works running on external power. When on USB, the neopixels are not powered. I was hoping to be able to power the pixel strip from the 5v external power, and run the trinket from usb so I can upload and test code faster. Is this possible to set up, or am I stuck switch from usb to external power on every code change?

copper summit Dec 24, 2019, 9:29 PM

#

Think I found the answer after another reading of this: https://learn.adafruit.com/adafruit-neopixel-uberguide/basic-connections

Adafruit Learning System

Adafruit NeoPixel Überguide

Everything you always wanted to know about Adafruit NeoPixels but were afraid to ask

pine bramble Dec 25, 2019, 1:27 AM

#

@copper summit I think you just connect the grounds.

atomic bison Dec 25, 2019, 5:23 AM

#

Hey guys, what would be the best way to power an arduino nano with lithium polymer batteries? So far, I am planning to put two 3.7V batteries in series and power it through the Vin pin, but I was wondering if there was a better solution. I would really like to have the ability to plug my device into the charger instead of removing the batteries and charging them separately

surreal pawn Dec 25, 2019, 5:37 AM

#

do you need about 7.4V for something else?

#

the adafruit feather boards all have a built-in lipo controller that let you charge a single-cell lipo from USB, and won't over-discharge your cell. the feather boards are about the same size as the arduino nano and I guess the closest one to the older nano would be https://www.adafruit.com/product/3458

Adafruit Feather 328P - Atmega328P 3.3V @ 8 MHz

With this Feather we're getting a little nostalgic for the ATmega328P - the classic 'Arduino' chip - with this Adafruit Feather 328P running a 3.3V and 8 MHz. Feather is the new ...

#

but there are other feather boards that have lots more powerful MCUs

#

https://www.adafruit.com/feather

Feather - A complete line of development boards from Adafruit that...

Adafruit Industries, Unique & fun DIY electronics and kits : - Tools Gift Certificates Arduino Cables Sensors LEDs Books Breakout Boards Power EL Wire/Tape/Panel Components & Parts LCDs & Displays Wearables Prototyping Raspberry Pi Wireless Young Engineers 3D printing NeoPix...

pine bramble Dec 25, 2019, 7:24 AM

#

_ .oO( .. feather the prop .. )_

atomic bison Dec 25, 2019, 3:41 PM

#

I'm trying to stick with the arduino nano since I plan on using many 5V sensors (Also, I already have it and the sensors)

#

I like the feather board that seems to have bluetooth built in, though

proven mauve Dec 25, 2019, 4:24 PM

#

Merry Christmas everyone!

#

I havent been around as much, all my projects have been going fairly smooth lately 😄

velvet charm Dec 25, 2019, 4:36 PM

#

Guys I have a problem with Arduino ide does it work on latest Mac OS?

acoustic nebula Dec 25, 2019, 4:36 PM

#

it "mostly" works on MacOS

#

what's your specific issue @velvet charm ?

velvet charm Dec 25, 2019, 4:37 PM

#

It doesn’t compile code

acoustic nebula Dec 25, 2019, 4:37 PM

#

for which target CPU?

velvet charm Dec 25, 2019, 4:38 PM

#

Attiny85

acoustic nebula Dec 25, 2019, 4:38 PM

#

are you running on macOS Catalina?

velvet charm Dec 25, 2019, 4:38 PM

#

Yes

acoustic nebula Dec 25, 2019, 4:38 PM

#

did you give it full file access permission?

velvet charm Dec 25, 2019, 4:38 PM

#

I think yes

acoustic nebula Dec 25, 2019, 4:38 PM

#

and input device permission?

velvet charm Dec 25, 2019, 4:38 PM

#

I don’t remember

acoustic nebula Dec 25, 2019, 4:38 PM

#

It's in the new area of the System Preferences

#

what's the specific error you're seeing?

velvet charm Dec 25, 2019, 4:39 PM

#

I posted it earlier: https://docs.google.com/document/d/1ivnqUr1yu-vIHb-446Lx7ZmLGlCrRrqMK-5FsvCZvZc/edit?usp=sharing

Google Docs

Error!

Arduino: 1.8.10 (Mac OS X), Board: "Digispark (Default - 16.5mhz)" /private/var/folders/cz/jzs110lj2y3bs2p6ygx01b6h0000gn/T/AppTranslocation/86E42661-86C7-409A-A0A6-92F92FC8F241/d/Arduino.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware /private/var/fo...

acoustic nebula Dec 25, 2019, 4:40 PM

#

"BAD CPU TYPE IN EXECUTABLE"

velvet charm Dec 25, 2019, 4:41 PM

#

Yes

acoustic nebula Dec 25, 2019, 4:41 PM

#

I'm wondering if it's an issue with the AVR-GCC version

velvet charm Dec 25, 2019, 4:41 PM

#

idk

acoustic nebula Dec 25, 2019, 4:41 PM

#

I think I had to delete my old avr-gcc folder from the Arduino15 folder

#

have you used an older version of the IDE before?

velvet charm Dec 25, 2019, 4:42 PM

#

Yes, but it was if I remember Arduino 1.8.5

acoustic nebula Dec 25, 2019, 4:42 PM

#

the upgrade to Catalina caused some of the Arduino command line tools to stop working since they're 32-bit executables. The latest IDE fixes this, but if the old info is left behind it can interfere

velvet charm Dec 25, 2019, 4:43 PM

#

So I need to delete Arduino15 folder and reinstall Arduino?

acoustic nebula Dec 25, 2019, 4:43 PM

#

In my /Library/Arduino15/packages/arduino/tools/avr-gcc folder, I had to rename the 4.8.1-arduino5 folder to old_4.8.1_arduino5 to make it use the new 7.3.0 compiler

velvet charm Dec 25, 2019, 4:44 PM

#

Ok, I’ll try it tomorrow

#

Time to use Windows:)

acoustic nebula Dec 25, 2019, 4:44 PM

#

definitely not

#

Windows is a different set of problems

#

much worse

velvet charm Dec 25, 2019, 4:45 PM

#

Ok

#

Thanks

acoustic nebula Dec 25, 2019, 4:46 PM

#

🙂

pine bramble Dec 25, 2019, 7:07 PM

#

So Linux > MacOS > Windows as usual ;)

little bobcat Dec 25, 2019, 7:39 PM

#

UNIX > Linux > MacOS (Mach) >> Windows [Edit: the programming environment on MacOS isn't as flexible as Linux, so adjusted.]

pine bramble Dec 25, 2019, 8:56 PM

#

haha. love it.

#

what about NExT?

#

(never ran that system or hardware so I don't know where it fits in)

#

there was 'be OS' iirc as well. and OS/2 or something like that.

pine bramble Dec 25, 2019, 9:35 PM

#

++++++++++++++++++++++++++++++++++++++++++++++

long girder Dec 25, 2019, 10:25 PM

#

Hey, while this isn't purely an arduino question, I'm working with an arduino and am wondering if there is a simple solution for wrapping values

#

So when x hits 100 it goes back to 0

#

Nevermind

#

its been a long day

#

%

pine bramble Dec 25, 2019, 10:41 PM

#

@long girder If you can live with even powers of two (64 128 .. any power of two) there's this:
https://github.com/wa1tnr/Metro-M4-Express-interpreter/blob/master/interpret_m4/interpret_m4.ino#L65

#

Basically bitmask the high bit, and perform addition.

#

The wrap-around is perfect, and it's not inelegant at all. ;)

#

This (I think; still untested) would be a very good way to implement a (serial comm) 'ring buffer'.

fading estuary Dec 26, 2019, 4:12 AM

#

I currently am stuck on an issue with a library(TMC Stepper from https://github.com/teemuatlut/TMCStepper) throwing up
'TMC2208Stepper::TMC2208Stepper(Stream*, float, uint8_t)' is protected within this context
The code for it is
TMC2208Stepper driver_A(SW_RX_A, SW_TX_A, R_SENSE_A);
It is the exact line from the example and even the example throws the same.
Google is failing to pull up anything useful. If someone knows the right direction or knows how to fix it, I would be very thankful for the help.

#

I am also trying to have this work with a Nano and with software serial.

rocky igloo Dec 26, 2019, 5:00 AM

#

@fading estuary I don't know that library but I just looked at the code. Which example does that line of yours come from? I kind of follow what you're saying but I have some questions about it.

#

Can you give a link to that example program?

fading estuary Dec 26, 2019, 5:12 AM

#

It does it with this one: https://github.com/teemuatlut/TMCStepper/blob/master/examples/Simple/Simple.ino

GitHub

teemuatlut/TMCStepper

Contribute to teemuatlut/TMCStepper development by creating an account on GitHub.

rocky igloo Dec 26, 2019, 5:34 AM

#

OK, I'm getting that too. Lemme look a little more.

#

Uhhh... The header file contains this: c #if SW_CAPABLE_PLATFORM TMC2208Stepper(uint16_t SW_RX_pin, uint16_t SW_TX_pin, float RS, bool)

#

Nowhere does it say what that bool is doing at the end, but that seems to be why your constructor call gets coerced into matching a protected method instead of the one you want.

#

This compiles for me however: C TMC2208Stepper driver(SW_RX, SW_TX, R_SENSE, true); // Software serial

#

Obvious I don't have the hardware so I can't say if it'll work. It gets past that compilation error at least.

vast cosmos Dec 26, 2019, 6:43 AM

#

ah wow it worked -- if any of you use a debug probe (e.g. segger jlink) with adafruit SAMD cores, it can be infuriating how there isn't an option in arduino to disable optimizations (causing the source-level debugging to jump all over the place). i tried adding a new optimize entry in the arduino IDE by modifying the SAMD boards.txt definition file with the following:

#

adafruit_grandcentral_m4.menu.opt.debug=Debug (-Og) adafruit_grandcentral_m4.menu.opt.debug.build.flags.optimize=-Og

#

(well obviously im using a grand central, but pick your board)

#

and holy cow what a difference it makes. now source-level debugging is perfectly accurate

#

you'll need a newer arduino (more specifically a newer gcc crosscompiler) to have the -Og flag available. otherwise the next best option will be -O0 to disable optimizations

#

-0g will fix not only your line-instruction translation but also reduces inlining and aggressive variable cleanup

surreal pawn Dec 26, 2019, 6:20 PM

#

@vast cosmos why not use platformio + vs code?

vast cosmos Dec 26, 2019, 7:11 PM

#

@surreal pawn well uh, what

#

then i think none of my arduino code would work

surreal pawn Dec 26, 2019, 7:12 PM

#

It does target Arduino

vast cosmos Dec 26, 2019, 7:12 PM

#

same reason im not using windows or linux

#

i've got quite a few large software libraries i use and develop. not terribly interested in porting them over to a new platform

#

(but for that matter, if i were to do that, i would be porting them to STM32 HAL)

surreal pawn Dec 26, 2019, 7:14 PM

#

Platformio should compile your Arduino code fine. The only problem I have run into with it is some ads fruit libraries don’t build because the dependencies aren’t set right.

vast cosmos Dec 26, 2019, 7:15 PM

#

platformio uses all the exact same syscalls as arduino?

fluid wagon Dec 26, 2019, 7:50 PM

#

platformio is arduino in effect

#

all the same headers and such

#

there are 2 differences I've found. 1. it is a bit more "proper" in requiring function definitions before they are called

#

and 2, in addition to your normal includes, you need to include Arduino.h

#

It is a much more competent IDE for Arduino development, at least for me, even with the little gotchas

light prawn Dec 26, 2019, 10:45 PM

#

Hello there, I am trying to use NeoPixel Strand with my ItsyBitsy M4, I can use it if I define the pin a 5, but any other pin does not work at all. Can anyone help me with it?

north stream Dec 27, 2019, 2:49 AM

#

@light prawn The ItsyBitsy M4 has a special logic level shifter on I/O 5 for NeoPixel use.

royal lion Dec 27, 2019, 7:29 PM

#

https://stackoverflow.com/questions/59505221/sending-floats-as-bytes-over-serial-from-python-program-to-arduino

Stack Overflow

Sending floats as bytes over serial from Python program to Arduino

I'm trying to send a uint8_t and two floats as bytes (not as the actual characters in the numbers) from a Python program over a serial connection to an Arduino (ATtiny1614 using megaTinyCore). Curr...

#

Could anyone help me with this issue?

north stream Dec 27, 2019, 8:20 PM

#

Posted a response.

fluid wagon Dec 27, 2019, 8:27 PM

#

A curiosity question: Since the Airlift products use the wifinina libraries and firmware, can the ArduinoBLE library be used to flip it into a BLE device as well?

neon trench Dec 27, 2019, 11:18 PM

#

Hi. N00b wiring question. I've never used a resistor on an Arduino project, since everything either wired up directly or used a wing/crickit add-on. Now as I build my first LED cube I see this diagram and I'm having difficulty understanding how the 12K resistor is wired between LOAD (D10) and GND. Do I need a breadboard for this? Do / can I just add the resistor between D10 and GND? The nano that was sent with this kit had male header pins pre-soldered, so am wondering if I can stretch the resistor between D10 and GND, diagonally below the nano, and then add a stacking header with female-end pins going into the nano's header & solder loose leads to the cube's PCB. https://cdn.instructables.com/FRN/OMG6/IIT9CKCD/FRNOMG6IIT9CKCD.LARGE.jpg?auto=webp&frame=1&width=1024&height=1024&fit=bounds Also - if I wanted to upgrade this with a feather w/bluefruit so I can add additional coding for remote, app-based control, can I assume that the Ardunio code is 100% compatible with any of the bluetooth-capable feathers? Thx!

pine bramble Dec 28, 2019, 12:32 AM

#

@neon trench The resistor is marked as a pull-down and is a singleton (one for the entire project).

#

Its job is to assert a logic zero on the port pin of the Nano tht's connected by the green wire.

#

~~If it's a switch that is on that port, the switch brings the green wire up to Vcc when actuated.~~ LOAD is an SPI signalling wire, to latch data

#

Construction practices are a matter of personal preference.

#

~~Since the pulldown operates on the Nano's port pin, it makes sense for it to be physically close to the Nano, rather than 'out at' the Cube.~~
The pulldown shapes the pulse train on the LOAD line of this SPI interface.

I'm now inclined to think it goes nearer to the MAX7219 than to the Nano. ;)

#

https://www.instructables.com/id/JolliCube-an-8x8x8-LED-Cube-SPI/
▪️
◽

#

https://cdn.instructables.com/F6K/CSNP/J3OPPX2A/F6KCSNPJ3OPPX2A.LARGE.jpg?auto=webp&width=1024&height=1024&fit=bounds

#

~~Looks like pin 12 sets the direction /CS for the SPI interface.~~

#

The last 16 bits are latched when LOAD has a rising edge (on its way to Vcc).

#

That resistor is probably there to give it a more sharp transition from GND to Vcc (increasing signalling rate and reliability).

neon trench Dec 28, 2019, 2:53 PM

#

Thx @pine bramble Got it working. Ended up stretching the resistor across the support board from LOAD to GND and it's working smoothly. Appreciate your help.

north inlet Dec 28, 2019, 6:32 PM

#

hello all :3

#

can someone help with a ? about write a code on arduino and check it on the board I'am using .it's on a adafruit trinket pro .

woven mica Dec 28, 2019, 6:39 PM

#

I can help you with the code, but I dont have your board

north inlet Dec 28, 2019, 7:24 PM

#

hi,lamfe

woven mica Dec 28, 2019, 7:25 PM

#

hi

north inlet Dec 28, 2019, 7:25 PM

#

sorry i did not respond back when you post

#

I am new with working on code with arduino

#

with most codes you can modfy them ?

woven mica Dec 28, 2019, 7:30 PM

#

Just post your code so I can see if I can help

north inlet Dec 28, 2019, 7:30 PM

#

can i copy they from ardiuino

woven mica Dec 28, 2019, 7:31 PM

#

Yes and paste it to https://pastebin.com/

Pastebin

Pastebin.com - #1 paste tool since 2002!

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

north inlet Dec 28, 2019, 7:32 PM

#

ok .i did

#

I need to sign up

woven mica Dec 28, 2019, 7:33 PM

#

no you dont need

north inlet Dec 28, 2019, 7:33 PM

#

ok

#

once i past .do i have to do something next

woven mica Dec 28, 2019, 7:35 PM

#

send the link

north inlet Dec 28, 2019, 7:36 PM

#

how do i send link

woven mica Dec 28, 2019, 7:36 PM

#

of the pastebin page

#

ok, so what is your problem?

north inlet Dec 28, 2019, 7:40 PM

#

I do not see a send link

woven mica Dec 28, 2019, 7:41 PM

#

Just copy and paste it. But i got the file you sent

north inlet Dec 28, 2019, 7:41 PM

#

ok

#

📎 message.txt

#

you see it has to do with neopixel.?

woven mica Dec 28, 2019, 7:43 PM

#

yes, I dont know much about them

north inlet Dec 28, 2019, 7:43 PM

#

I am using the code for a project of a mascot that i'am building

#

I just want to use is just the theaterchase code

#

right now i got the code working on a adafruit trinket pro .

woven mica Dec 28, 2019, 7:48 PM

#

So you want to remove the other animations?

north inlet Dec 28, 2019, 7:48 PM

#

yes 🙂 right

#

like to understand what i can remove the right way.

woven mica Dec 28, 2019, 7:50 PM

#

The easiest way is to remove the lines from void loop() (the colorWipe and rainbow)

north inlet Dec 28, 2019, 7:51 PM

#

so from those lines highlight and remove them

#

in arduino

woven mica Dec 28, 2019, 7:53 PM

#

remove only those lies that begin with colorWipe and rainbow

north inlet Dec 28, 2019, 7:53 PM

#

ok

#

the line that has theaterchaserainbow(50) remove

woven mica Dec 28, 2019, 7:56 PM

#

not if you want that animation

north inlet Dec 28, 2019, 7:56 PM

#

ok

#

the next i see is the void colorwipe

#

i remove from the loop do the same hear too

woven mica Dec 28, 2019, 7:59 PM

#

Yes, you can remove the void colorwipe, but remove the whole block down to the delay(wait); // Pause for a moment } }<-here

north inlet Dec 28, 2019, 8:00 PM

#

ok

#

do same for void rainbow

woven mica Dec 28, 2019, 8:02 PM

#

You can if you dont need it

north inlet Dec 28, 2019, 8:02 PM

#

ok

#

I got a ? the code that are in gray wording has no affect

woven mica Dec 28, 2019, 8:05 PM

#

yes

north inlet Dec 28, 2019, 8:07 PM

#

so lines like // Rainbow-enhanced

#

that can be removed

woven mica Dec 28, 2019, 8:08 PM

#

yes

north inlet Dec 28, 2019, 8:08 PM

#

ok.thank you very much for your help 🙂

#

I got a ? on arduino with the code I'am working on when i verify and it comes up with a redefinition it shows how it should be write .?

woven mica Dec 28, 2019, 8:19 PM

#

depends on the message

north inlet Dec 28, 2019, 8:22 PM

#

the line that has Adafruit_Neopixel strip redefinition of 'Adafruit_Neopixel Strip'

woven mica Dec 28, 2019, 8:29 PM

#

something must be wrong in the code

north inlet Dec 28, 2019, 8:30 PM

#

can that code be left or can it be removed

woven mica Dec 28, 2019, 8:35 PM

#

It can'T be removed

north inlet Dec 28, 2019, 8:37 PM

#

would have to ask someone in aadafruti about that line of the code.

woven mica Dec 28, 2019, 8:40 PM

#

send your new code

north inlet Dec 28, 2019, 8:42 PM

#

ok

#

📎 message.txt

woven mica Dec 28, 2019, 8:46 PM

#

You have pasted the same code twice

#

It should be like this https://pastebin.com/yWqFw87h

Pastebin

[C++] // A basic everyday NeoPixel strip test program. // NEOPI...

north inlet Dec 28, 2019, 8:51 PM

#

can you help me understand ? what you are saying .sorry

#

I open your pastebin.com

woven mica Dec 28, 2019, 8:53 PM

#

You have the same code in your sketch twice

north inlet Dec 28, 2019, 8:54 PM

#

ok.

#

is there a way to fix that ?

woven mica Dec 28, 2019, 8:59 PM

#

I sent you the fixed code

north inlet Dec 28, 2019, 8:59 PM

#

okty

#

i just copy that code and past to arduino

woven mica Dec 28, 2019, 9:01 PM

#

Yes, but remove everything in the arduino first

north inlet Dec 28, 2019, 9:02 PM

#

the sketches

#

the sketches in my folder

woven mica Dec 28, 2019, 9:05 PM

#

You can create a new sketch, delete the text in it and paste the code

north inlet Dec 28, 2019, 9:06 PM

#

ok,do i copy the raw paste data code or the code before it ?

woven mica Dec 28, 2019, 9:08 PM

#

the raw paste

north inlet Dec 28, 2019, 9:08 PM

#

ok

#

yea .its working .thank you very much 🙂

#

thank you,thank you lamfe 🙂

#

🙂

foggy mirage Dec 28, 2019, 11:42 PM

#

I am using arduino IDE on circuit playground bluefruit. I dont see any COM port in Tools->Port. Only some bluetooth ports shows up. I was able to upload code using arduino couple of days, now it no longers works. Any pointers?

acoustic nebula Dec 29, 2019, 12:17 AM

#

did you hit the reset button twice in a row? The bootloader turns all of the neopixels green when it's ready to receive a new sketch

foggy mirage Dec 29, 2019, 2:10 AM

#

I tried pressing RESET twice, the neopixels are all RED in my board.

#

This is the error - "nordicsemi.exceptions.NordicSemiException: No data received on serial port. Not able to proceed."
https://pastebin.com/4nTpDhmw

Pastebin

imed out waiting for acknowledgement from device. Failed to upg...

#

I am using a mac. The COM port just wouldnt appear. Tried changing the USB cable as well.

pine bramble Dec 29, 2019, 3:30 PM

#

@neon trench That sounds great!

fair jewel Dec 29, 2019, 3:39 PM

#

Hello having an issue with the dht22 huzzah 32 ada io setup. looks like the code is looking for a esp8266, due to an error Error "compiling for board Adafruit ESP32 Feather" ? any help would be great thank you

#

I"m following the esp8266 weather station on the learn ada site

neon trench Dec 29, 2019, 4:34 PM

#

Trying to get a Feather nrf52840 working with Arduino. Believe I've done all of the setup properly, but am getting this error message:
fork/exec /Users/gallaugh/Library/Arduino15/packages/arduino/tools/arm-none-eabi-gcc/7-2017q4/bin/arm-none-eabi-g++: no such file or directory
Error compiling for board Adafruit Bluefruit Feather nRF52840 Express.

#

I've tried uninstalling & reinstalling the SAMD from the board manager, but doesn't seem to work, also tried standard restart.

#

If useful, here's a screenshot of my Tools menu:

📎 Tools_Menu.png

#

Bootloader is 0.2.13

neon trench Dec 29, 2019, 5:22 PM

#

FIXED: if anyone runs into this problem, I found a thread suggesting to delete the Arduino app, then uninstall the user's Library/Arduino15 library (if you can't find this on a Mac, files are hidden so use Ctrl-Command->. After the re-install, follow the steps as a fresh install as listed on the Adafruit site (installing the adafruit URL in Arduino preferences, installing the nrf52 board tools, etc.).

wraith current Dec 29, 2019, 8:24 PM

#

@fair jewel any library that is esp8266 specific needs to be changed to an esp32 specific library. We also need more of the error

#

looks like #include <ESP8266WiFi.h> needs to be changed. Try replacing the entire line with #include <WiFi.h>

pine bramble Dec 30, 2019, 3:21 AM

#

The fix is to learn what that error message told you. ;)

vast cosmos Dec 30, 2019, 5:40 AM

#

anyone here use one of those cheap ILI9341 TFT touchscreen panels?

#

i just spend a good solid week straight working on an autolayout engine, sorta like a window manager, based on Adafruit_ILI9341 and my own fork of the XPT2046_Touchscreen library

#

but i would love to see if someone else could test the example sketch ive included with the library here: https://github.com/ardnew/ILI9341-Layout-Manager

GitHub

ardnew/ILI9341-Layout-Manager

A modal framework for presenting collections of data using a scaling autolayout engine - ardnew/ILI9341-Layout-Manager

proven mauve Dec 30, 2019, 12:33 PM

#

So... I'm working with hardware and my bottleneck always seems to be I2C displays. So I've changed from a 128x64 OLED to a 16x2 character LCD. It's much faster, but now I'm messing with making it even faster. It's running off the LiquidCrystal_I2C library from this tutorial: https://www.makerguides.com/character-i2c-lcd-arduino-tutorial/ .... So, I've started trying to increase the speed of the I2C by using Wire.setClock(value); after the Wire.begin(); command and have used the values from the Arduino reference here: https://www.arduino.cc/en/Reference/WireSetClock 100000, 400000, 1000000, and 3400000. All I'm currently running on the target SAMD51 chip is code to check the cycles per second and display it on the LCD. If I don't limit the frame I get around 47 cycles per second because of I2C limitations, if I refresh the screen at 20fps I get around 340,000 cycles per second, and if I refresh once per second I get over 600,000 cycles per second. But using the Wire.setClock() doesn't have any affect over the cycles per second I'm getting, no matter what I change it to, whether there's an L or UL at the end of the value, etc.... Nothing seems to really change the bus speed... And the LCD screen always works, even if I set it to a value that shouldn't work (like 10000000000UL)...

Makerguides.com

Benne de Bakker

Character I2C LCD with Arduino Tutorial (8 Examples)

In this tutorial you will learn how to control a 16x2 or 20x4 I2C character LCD with Arduino. Wiring diagram and many example codes included!

Arduino - WireSetClock

Open-source electronic prototyping platform enabling users to create interactive electronic objects.

acoustic nebula Dec 30, 2019, 2:55 PM

#

depending on the target CPU, not all I2C hardware allows setting any speed

#

Through the Arduino Library code, most target CPUs top out at 400Khz

#

ATSAMD21 seems to allow almost any value. On SSD1306 OLEDs, you can usually go up to 1.6Mhz without issue

#

I prefer to use the 128x64 OLEDs over those character LCDs due to cost, weight, size and simplicity

#

you can drive them plenty fast even with bit banging at 1-2Mhz

#

@proven mauve

swift widget Dec 30, 2019, 3:19 PM

#

I have a Trinket M0 which has a few touch sensitive pins. I know how to use them in CP, but how can I access them in Arduino?

proven mauve Dec 30, 2019, 3:22 PM

#

@acoustic nebula over SPI I assume, for the OLEDs?

acoustic nebula Dec 30, 2019, 3:22 PM

#

nope, I2C

swift widget Dec 30, 2019, 3:22 PM

#

I have some nifty 24 pixel NeoPixel rings and have unified the animations from the Celebration Specs and the Kaleidoscope Goggle guides into one sketch. The whole time I was wondering: is there a library for Arduino that had a range of cool NeoPixel animations? [did find one site with code, but no library] [btw, animations in CP are so much slower than in Arduino, hence not using CP]

acoustic nebula Dec 30, 2019, 3:22 PM

#

SPI can go even faster

proven mauve Dec 30, 2019, 3:23 PM

#

I would prefer to use the OLEDs as well, but I haven't been able to get the FPS out of them that I would like

acoustic nebula Dec 30, 2019, 3:23 PM

#

https://bitbanksoftware.blogspot.com/2018/05/fast-ssd1306-oled-drawing-with-i2c-bit.html

Fast SSD1306 OLED drawing with I2C bit banging

What The SSD1306 OLED displays are very popular with hobbyists due to their low cost and easy interfacing. The majority of the ones ...

#

I got 151 FPS (full screen updates)

odd fjord Dec 30, 2019, 3:23 PM

#

@swift widget You should be able to use the Adafruit Freetouch library https://github.com/adafruit/Adafruit_FreeTouch you can install it from the Library manager

acoustic nebula Dec 30, 2019, 3:24 PM

#

you can go even higher

proven mauve Dec 30, 2019, 3:24 PM

#

I don't even need to bit bang 😄

acoustic nebula Dec 30, 2019, 3:24 PM

#

correct

#

check out my code - lots of features and speed/size are priority

#

ss_oled library (in Arduino lib manager and GitHub)

#

https://github.com/bitbank2/ss_oled

GitHub

bitbank2/ss_oled

Simple and small library to control 1-bpp OLED displays (Linux + Arduino) - bitbank2/ss_oled

#

has features beyond what Adafruit has in their GFX/OLED libraries

proven mauve Dec 30, 2019, 3:27 PM

#

This is probably exactly what I'm looking for, I appreciate the help

acoustic nebula Dec 30, 2019, 3:27 PM

#

🙂

proven mauve Dec 30, 2019, 3:29 PM

#

we'll know in a few minutes 😄

swift widget Dec 30, 2019, 3:33 PM

#

@odd fjord Thank you. I did see that, but thought it required two pins and external resistors like the Arduino touch library. Closer inspection suggests that's not the case. Will try it. Thanks, again!

proven mauve Dec 30, 2019, 3:59 PM

#

@acoustic nebula this is really fast

#

but I get a pulsing effect on the screen, but I'm not sure if I'm using the commands right yet. If I slow it down to 1 fps it's not very noticeable, but running at 20fps you can tell its blanking out and then displaying text quickly, and with no fps limit it sorta shows letters in waves

#

it runs great at 3.4mhz tho, I'm getting almost 700k cycles per second with a 1fps refresh rate

acoustic nebula Dec 30, 2019, 4:03 PM

#

what are you doing with the text?

#

you may want to try using a back buffer to draw into, then send it to the display after you create the image you want

#

single pixel scrolling is built in

proven mauve Dec 30, 2019, 4:04 PM

#

I think I'm doing that....

#

let me put this somewhere so I don't blast the room with a bunch of code

acoustic nebula Dec 30, 2019, 4:05 PM

#

if you're overwriting the same spot with new text, then you shouldn't be filling the screen between text writes since it's not needed.

#

that will cause flashing

proven mauve Dec 30, 2019, 4:05 PM

#

I see

acoustic nebula Dec 30, 2019, 4:05 PM

#

in the normal "render now" text mode, it will overwrite what's underneath it

proven mauve Dec 30, 2019, 4:08 PM

#

so the code is two files, here's the first one: https://pastebin.com/4QXGxbNd and the second: https://pastebin.com/tSS3faME

Pastebin

ino - Pastebin.com

Pastebin

.h - Pastebin.com

#

yeah, I got rid of the fill and the flashing stopped, I'll just have to intelligently add it places when the text changes

acoustic nebula Dec 30, 2019, 4:11 PM

#

as long as you understand what each function does, you can avoid pitfalls like that.

proven mauve Dec 30, 2019, 4:11 PM

#

holy cow, this is fast

acoustic nebula Dec 30, 2019, 4:12 PM

#

OLEDs have extremely fast refresh; if you leave part of the display blank for even a few milliseconds, the eye will see it

#

You'll figure out the right balance of back buffer operations versus direct display update

#

https://youtu.be/nUK2im1Ngpo

YouTube

Larry Bank

December 22, 2019

Comparison of backbuffer speed on OLED drawing

▶ Play video

proven mauve Dec 30, 2019, 4:13 PM

#

yeah, thanks for pointing me towards your library. This is really cool. Just have to get over the hump of learning a new screen implementation

acoustic nebula Dec 30, 2019, 4:14 PM

#

I tried to make it simple, but it's hard to explain how bits/bytes/pixels work to someone not used to it

proven mauve Dec 30, 2019, 4:14 PM

#

my "with backbuffer" times were about half of yours on that video 😄

acoustic nebula Dec 30, 2019, 4:14 PM

#

that video was run at 400Khz

proven mauve Dec 30, 2019, 4:14 PM

#

gotcha

acoustic nebula Dec 30, 2019, 4:15 PM

#

let me know if you have ideas for new functions that would be useful for other people too

#

I don't have a specific project at the moment, but people have needed various features for their projects, so I added them to my library

proven mauve Dec 30, 2019, 4:16 PM

#

oled.print("text");
oled.println(var);
😄

acoustic nebula Dec 30, 2019, 4:16 PM

#

I need to publish an example sketch for the sprite function

proven mauve Dec 30, 2019, 4:16 PM

#

I've gotten really used to the 'adafruit standard' and think in it now lol

acoustic nebula Dec 30, 2019, 4:17 PM

#

print and println will drag in a ton of code. I left them out so as to keep things compact. You can just use sprintf() to get the same features if you need that stuff.

proven mauve Dec 30, 2019, 4:17 PM

#

I figured that's why you did it that way

acoustic nebula Dec 30, 2019, 4:17 PM

#

my code still runs on an ATtiny85. Adafruit's never did

proven mauve Dec 30, 2019, 4:17 PM

#

😄

acoustic nebula Dec 30, 2019, 4:18 PM

#

I'm in the middle of modifying my color LCD library (bb_spi_lcd). I'm seriously toying with the idea of porting my GameBoy emulator to run on a Cortex-M0

#

I think I can make it fit in 32k of RAM

proven mauve Dec 30, 2019, 4:18 PM

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If you get it to do bmp's without taking up 15kb, we can work it into the standard tamaguino project to fit a lot more features into what an UNO can do. I had to move to bigger chips to pack more features in because of that.

acoustic nebula Dec 30, 2019, 4:19 PM

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You can use the compressed animation code (in ss_oled) to display full screen bitmaps that take up less than 1K byte each

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You can also pass it a Win BMP file to display

proven mauve Dec 30, 2019, 4:20 PM

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the way it's currently running is it puts together around 6 or 8 bmps into a picture then displays it, to separate animations between the pet and ground/sky/mountains/etc

acoustic nebula Dec 30, 2019, 4:20 PM

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depending on how "messy" the bitmap is, my code usually compresses between 2 and 5:1

proven mauve Dec 30, 2019, 4:21 PM

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https://github.com/SandwichRising/Tamaguino-Mega

GitHub

SandwichRising/Tamaguino-Mega

Tamaguino Mega Version based off jakob's project @ - SandwichRising/Tamaguino-Mega

acoustic nebula Dec 30, 2019, 4:21 PM

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if you define them as sprites, it will probably take up less space

proven mauve Dec 30, 2019, 4:21 PM

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there's an example picture on there

acoustic nebula Dec 30, 2019, 4:22 PM

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I'm looking at the bmp files on your project...

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why are they 2.3KB each?

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oh - you're using 24x24x32-bpp BMP files with just black and white pixels 😦

proven mauve Dec 30, 2019, 4:24 PM

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lol

acoustic nebula Dec 30, 2019, 4:25 PM

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yes, you're wasting nearly 32x the space for each of your little bitmaps

proven mauve Dec 30, 2019, 4:26 PM

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lol, I'm fairly new to this. I don't know a better way to compress them yet beyond what jakob originally made

acoustic nebula Dec 30, 2019, 4:26 PM

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Windows supports a 1-bpp format too

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the bmp files in your GitHub appear to be all 32-bpp (32 bits per pixel)

proven mauve Dec 30, 2019, 4:26 PM

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ooooooh

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ooooooooooooooooooooooooh

acoustic nebula Dec 30, 2019, 4:26 PM

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light bulb goes on 🙂

proven mauve Dec 30, 2019, 4:27 PM

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and it needs to only be one bit per pixel....

acoustic nebula Dec 30, 2019, 4:27 PM

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yep

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if that's what was eating up your FLASH space, you now see the solution 🙂

proven mauve Dec 30, 2019, 4:27 PM

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that, and the adafruit oled library itself takes up half the available space

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but that will defintely help a lot

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ha, thanks

acoustic nebula Dec 30, 2019, 4:28 PM

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glad I could help

proven mauve Dec 30, 2019, 4:28 PM

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that's twice today 😄

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btw, your oled library is substantially faster then the LED one I was using to speed things up lol

acoustic nebula Dec 30, 2019, 4:29 PM

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excellent

proven mauve Dec 30, 2019, 4:29 PM

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at 20 frames per second I'm still getting 580k cycles per second which is good news. I should be able to do a lot with that.

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Making MIDI stuff 😄

acoustic nebula Dec 30, 2019, 4:30 PM

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I thought my auto-detect of the I2C address was very clever, but I haven't seen anyone copy the idea yet

proven mauve Dec 30, 2019, 4:32 PM

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I haven't either, but I'm surprised, I saw a tutorial today on finding i2c addresses with a tiny bit of code. Seems intuitive to link them together if you're making display libraries

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what does it do if you hook up two displays with different addresses?

acoustic nebula Dec 30, 2019, 4:32 PM

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p.s. I wrote a tool to display image info (to know a 32-bpp file from a 1-bpp file) https://github.com/bitbank2/imageinfo

GitHub

bitbank2/imageinfo

A lightweight (aka fast) tool for identifying and displaying the relevant info for image files. - bitbank2/imageinfo

proven mauve Dec 30, 2019, 4:32 PM

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of course you did 😄

acoustic nebula Dec 30, 2019, 4:33 PM

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you can connect multiple displays to the same I2C bus if they have different addresses

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I wrote a library to control lots of them from a single MCU

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https://bitbanksoftware.blogspot.com/2019/01/controlling-lots-of-oled-displays-with.html

Controlling lots of OLED displays with a few GPIO pins

On my mission to learn as much as possible about "IoT" and all of the accessories/sensors/displays that are popular in the market, I came ac...

proven mauve Dec 30, 2019, 4:33 PM

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I see, I see

#

If I use the ss_oled library in conjunction with Wire.h to talk to another arduino chip, I assume the wire will run at the same speed as I set in the ss_oled initialization (as long as I do it after wire.begin()) right?

acoustic nebula Dec 30, 2019, 4:39 PM

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yes, the last one to call wire.setClock() sets the speed. You can set it again after each library initializes

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many common sensors will work beyond 400Khz, but then it depends on the length and resistance of your SDA/SCL wires

proven mauve Dec 30, 2019, 4:40 PM

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I'll just be using it to talk to a 328p hooked up to pots and a rotory encoder, to get data back to the trellis

#

and the oled, of course

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especially now that my display is at 3v instead of the 5v LED, this really simplifies things and expands how much data I can show at once 😄

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man, this stuff is cool. Thanks for making these libraries for the community

acoustic nebula Dec 30, 2019, 4:42 PM

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I'm really glad you find the code useful. After I learn something, write a library and publish it, it's gratifying to know that it helps someone else in the community.

proven mauve Dec 30, 2019, 4:45 PM

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Yeah, for sure. I'll make sure to ping you when I'm farther along in the project to show you

acoustic nebula Dec 30, 2019, 4:45 PM

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yes, I would like to see your progress

proven mauve Dec 30, 2019, 4:46 PM

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I leave on vacation in a week and part of that is 4 days in shenzhen to buy components 😄 Should be able to really flesh out some projects on the cheap after that

acoustic nebula Dec 30, 2019, 4:46 PM

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that sounds like a fun adventure

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I have to be content with buying stuff from AliExpress and waiting 3-4 weeks for it to arrive

proven mauve Dec 30, 2019, 4:47 PM

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crazy enough, adafruit sells a book on buying electronics in shenzhen that will be really useful ha

acoustic nebula Dec 30, 2019, 4:47 PM

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although now I'm at the "hoarder's point" where I've got unopened packages of MCU dev boards

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I'm going to do a deep dive on the ATSAM21D and modify a bootloader

proven mauve Dec 30, 2019, 4:48 PM

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yeah, ali and banggood was my go-to before, but I took a job in afg, so it's a lot more complicated now lol. Digikey and adafruit are pretty much the only vendors I order from any more

acoustic nebula Dec 30, 2019, 4:49 PM

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ah - military/contractor?

proven mauve Dec 30, 2019, 4:49 PM

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ya, ex-mil now contractor

acoustic nebula Dec 30, 2019, 4:50 PM

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hmm - I've been trying to sell my JEDMIC imaging solution to a military branch for a while 🙂

proven mauve Dec 30, 2019, 4:50 PM

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it's crazy how being in an environment like this really pushes people into self-betterment one wa or another. Most people hit the gym really hard, but I do microcontrollers now haha

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Ugh, yeah, I don't envy you, that bidding/govt purchase process is.... not very good. lol

acoustic nebula Dec 30, 2019, 4:51 PM

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I have no visibility into that

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It's a solution waiting for a problem (my imaging code)

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it's a super fast codec for working with 1-bpp CCITT G4 images (used in the JEDMICS scanned document standard)

proven mauve Dec 30, 2019, 4:52 PM

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that makes it even harder if they're not actively looking for it, Im not sure even where to break in that way

acoustic nebula Dec 30, 2019, 4:53 PM

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it's probably not a priority for anyone

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https://en.wikipedia.org/wiki/JEDMICS

JEDMICS

JEDMICS is the "Joint Engineering Data Management Information and Control System” is a Department of Defense (DoD) initiative for the management and control of engineering drawings and related text in a standard repository. JEDMICS has been designed as an open, client-serv...

proven mauve Dec 30, 2019, 4:54 PM

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yeah, was just looking at that. Talk about specialized ha

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that's interesting, sounds like high level stuff. I ran an armory when I was in and did limited levels of weapon repair and I've never heard of that repository lol

acoustic nebula Dec 30, 2019, 4:55 PM

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In my younger days, I saw that CALS and JEDMICS compressed image standard as a fun thing to write a viewer for

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I think it was because one of my customers of my Android image viewer asked to be able to view those files

proven mauve Dec 30, 2019, 5:00 PM

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lol, it's weird the places we end up

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I wouldn't even know what a microcontroller was if I hadn't bought a 3d printer and needed an arduino to flash marlin onto it. Then I kept looking at it going, "what IS this thing?"

north stream Dec 30, 2019, 5:14 PM

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I used to use CCITT G3 encoding in TIFF files to make really tiny 1-bit images. It's the old RLL encoding used in faxes, optimized for typed text at a moderate resolution.

proven mauve Dec 30, 2019, 5:21 PM

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ha. I can't remember the last time I thought about image encoding other than bumbling my way through converting bmps to c for that tamaguino stuff

narrow thorn Dec 30, 2019, 5:26 PM

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really good news for FastLED fans.. https://www.reddit.com/r/FastLED/comments/ehdxez/fastleds_bright_future/

FastLED's bright future

Posted in r/FastLED by u/kriegsman • 93 points and 14 comments

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and for those that don't know what FastLED is.. It really helps take your LEDs to the next level 🙂

low ingot Dec 30, 2019, 6:27 PM

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Has anyone had a problem where the itsybitsy M0 requires you to press the reset button each time you disconnect from serial monitor?

#

It happens every time now on platformio, this never used to be a problem

acoustic nebula Dec 30, 2019, 6:41 PM

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all of my Cortex-M boards seem to behave like that

pine bramble Dec 30, 2019, 6:42 PM

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@acoustic nebula I needed your armasm to gnu assembler translation program the other day. ;)

acoustic nebula Dec 30, 2019, 6:42 PM

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nice - thanks for letting me know

pine bramble Dec 30, 2019, 6:42 PM

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The corporate-based toolchain is just too not Linux-y for that task.

acoustic nebula Dec 30, 2019, 6:43 PM

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I've probably got 2x the utilities like that (unfinished), sitting on my hard drive

pine bramble Dec 30, 2019, 6:43 PM

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At some point I'd like to ask you about it in more detail (not today) as I did have issues I didn't resolve.

acoustic nebula Dec 30, 2019, 6:43 PM

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occasionally I'll get the energy to make it into something coherent to publish on Github

pine bramble Dec 30, 2019, 6:44 PM

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I totally hear ya. ;)

acoustic nebula Dec 30, 2019, 6:44 PM

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I get so little feedback that it's hard to know where to spend my energy

pine bramble Dec 30, 2019, 6:44 PM

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BTW that was pretty much the only tool I saw (looking quickly) to do this.

acoustic nebula Dec 30, 2019, 6:44 PM

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probably - didn't seem like the Microsoft camp would help in that department

low ingot Dec 30, 2019, 6:45 PM

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so it's expected behavior that you can only run your program once before a hardware reset?

pine bramble Dec 30, 2019, 6:45 PM

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The eForth copy I have is only distributed as a (functioning!) .hex and as the corresponding (armasm - based) .S file.

low ingot Dec 30, 2019, 6:45 PM

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Until today it would restart the program each time you connected to the device

acoustic nebula Dec 30, 2019, 6:45 PM

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no, just that the bootloader/startup seems to get gummed up more often than not

pine bramble Dec 30, 2019, 6:45 PM

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@low ingot Don't know what you're asking.

acoustic nebula Dec 30, 2019, 6:46 PM

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I have a lot of old ASM code I wrote for WindowsCE. I wanted it to work on Android/iOS/Linux too

pine bramble Dec 30, 2019, 6:47 PM

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@acoustic nebula The general (stackexchange) consensus was that you had to port by hand between the two systems (armasm and GNU assembler).

low ingot Dec 30, 2019, 6:47 PM

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If I want to rerun a program on my itsybitsy m0, I have to either reprogram it or unplug it to disconnect the serial

pine bramble Dec 30, 2019, 6:48 PM

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@low ingot Well you need a means to restart your program without doing those things.

acoustic nebula Dec 30, 2019, 6:48 PM

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I saw some simple ways of converting between the 2, so I wrote brute force string search/replace utility

low ingot Dec 30, 2019, 6:48 PM

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I've never had this problem on any arduino or even the M0 until today

pine bramble Dec 30, 2019, 6:48 PM

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NVIC thing. I'll link an example.

low ingot Dec 30, 2019, 6:48 PM

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You should just be able to close and reopen your serial monitor to restart a program

pine bramble Dec 30, 2019, 6:49 PM

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Do you want the hard core (complex) version or the simplest I can find (quickly)? ;)

acoustic nebula Dec 30, 2019, 6:49 PM

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the serial monitor probable toggles the virtual DTR signal. This may not always do the trick depending on the USBSerial state

pine bramble Dec 30, 2019, 6:49 PM

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What operating system? Windows? MacOSX? Linux?

acoustic nebula Dec 30, 2019, 6:51 PM

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I can power up Ubuntu or Windows (bleh) if needed

pine bramble Dec 30, 2019, 6:54 PM

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No that was for @low ingot :)

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https://github.com/wa1tnr/ainsuForth-Trinket_M0/blob/master/src/kernel/warm.cpp#L12

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That's the best I can do on short notice.

low ingot Dec 30, 2019, 6:54 PM

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I'm on windows atm

pine bramble Dec 30, 2019, 6:54 PM

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Can't seem to find a complete example that's short.

#

Including <Arduino.h> might be enough (or not even that much, if this is a singleton .ino sketch you're working on).

#

void _warm(void) {
    NVIC_SystemReset();      // processor software reset 
}

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That'll zap some of the internal states but won't for example turn off an RGB LED that has its own 'supervisor' chip inside itself.

acoustic nebula Dec 30, 2019, 6:56 PM

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sorry, wasn't sure if you were talking to me or SMetcalfPS

pine bramble Dec 30, 2019, 6:57 PM

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I call that a 'warm reset' but I don't really know exactly what it will or won't do.

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It should be enough to run the program again, as if you'd unplugged the Trinket M0 and then plugged it back in, for most use cases.

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It doesn't quite do what pressing RESET does, as that involves the bootloader code (which NVIC_SystemReset() probably does not call).

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I think .. not sure on that either. ;)

#

Dan would know right off the top of his head. ;)

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A lot of times you simply need to escape the endless loop.
Make your own endless loop in setup() rather than the official Arduino loop() (which will never be reached, if you do this right).

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If you do all that you won't lose valuable system state information as an NVIC reset would.

#

(You might want to preserve things unrelated to program control)

low ingot Dec 30, 2019, 7:01 PM

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the NVIC seems to cause the port to become unreadable.

pine bramble Dec 30, 2019, 7:01 PM

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Maybe this'd go easier if you showed your entire source code (all of it. ;)

#

USB is pretty complex and I've been there, where the USB oriented stuff wasn't re-entrant.

#

(In those cases I didn't solve it really very satisfactorily, but I was in Atmel Start and the USB oriented code was primitive).

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The reason I asked about the operating system, was that not all comm programs (putty maybe, in the case of Windows) are equal.

#

Some release the port easily; some hang onto it.

#

(or something like that)

#

I like microcom in Linux for just this reason.

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It releases the CDC ACM kernel-supervised use of the serial port.

#

(USB serial)

bold saddle Dec 30, 2019, 9:21 PM

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I just did a board update for Adafruit SAMD boards and now I cannot compile any script for a Metro M4 board. I get the following error message

"Arduino: 1.8.10 (Windows 10), Board: "Adafruit Metro M4 (SAMD51), Enabled, 120 MHz (standard), Small (-Os) (standard), 50 MHz (standard), Arduino, Off"

exec: "/bin/arm-none-eabi-g++": file does not exist
Error compiling for board Adafruit Metro M4 (SAMD51).

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences."

north stream Dec 30, 2019, 9:28 PM

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Did you also update the Arduino SAMD package?

pine bramble Dec 30, 2019, 9:35 PM

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thunder here
https://github.com/arduino/ArduinoCore-samd/commit/f9521bbfc0e34a393e7ccdcaae63b126e6211c0b

bold saddle Dec 30, 2019, 9:55 PM

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I tried completely uninstalling and reinstalling the Arduino IDE and updating all boards and libraries. No luck. It still won't compile even blink.ino

bold saddle Dec 30, 2019, 10:14 PM

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If I rollback Adafruit SAMD Boards to version 1.5.7 it compiles just fine but if I used the latest 1.5.8 version it refuses to compile with the error message I posted above.

#

It now looks like version 1.5.8 is no longer available. They must have pulled it because of the problem.

heady python Dec 30, 2019, 10:38 PM

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is there any information on what the maximum resistance that the itsybitsy M4 ADC can deal with? I know for the atmega arduinos it's generally 10kΩ

lost nest Dec 31, 2019, 12:49 AM

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@heady python Some math required, but it's worth the read: See Table 54-24 and Figure 54-5

#

of the datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/60001507E.pdf

pine bramble Dec 31, 2019, 1:24 AM

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https://termbin.com/nhki
I think one of the Makefiles may've propagated a path error for the compiler.
Haven't quite looked into it. ;)

burnt island Dec 31, 2019, 1:27 AM

#

does anyone know where the Arduino sketch to go with the thermal camera mode of the BlueFruit app is hiding?

heady python Dec 31, 2019, 1:36 AM

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@lost nest awesome, that answers all of my questions, thanks!

pine bramble Dec 31, 2019, 1:45 AM

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STM32 Cores got an update recently. 1.7.0 > 1.8.0

pine bramble Dec 31, 2019, 2:01 AM

#

it's in there

📎 aff405-aa.jpg

proven mauve Dec 31, 2019, 4:55 AM

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so... I notice something about using .h and .cpp.... In my main sketch I use a currentMillis global variable to control the timing of everything instead of delays. And, if I #include .h files to break the program up into modules, I can use the currentMillis global variable in the functions I wrote in the header file. But if I #include a .cpp file in the header file, the global variable currentMillis is out of scope for it and can't be used ...

#

So, I default to just using .h's because they work the way I am wanting the separate files to, but I notice I'm the only person doing this... because it's not proper to just fill them full of code instead of breaking them into a .h and .cpp with the actual coding in the .cpp... and it makes me feel dumb lol

#

maybe I just need to start passing values more

surreal pawn Dec 31, 2019, 6:05 AM

#

so... it sounds like you don't understand how c++ compilation works and how variables (global or otherwise) are hooked up

#

it's frustrating that you have to know this for c++ but here's roughly how it works: #include just copies code into the current file, it doesn't matter the file extensnion. Next, every variable (and function and type) needs to be declared in the current assemblage of files after pre-processing (also called a "compilation unit").

#

if a variable is declared, say long currentMillis; at the global scope, the compilation unit will include additional global memory for this "global" variable. If instead it were declared as extern long currentMillis; the compilation unit will not allocate memory for that global variable, but it will be found in some other compilation unit at the linking step

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so putting global variable declarations (without extern) in your .h file is typically a bad idea because it means you get duplicates of these global variables

#help-with-arduino

Adafruit-Trinket-USB