help-with-linux-sbcs

[civic rune]

hm

I guess I'm confused?

ohh

I see

[tired marsh]

because folders are supposed to represent submodules

[civic rune]

So if you're writing code that lives in a folder and is imported by main code?

you would use from . import foo?

[tired marsh]

yeah

[civic rune]

that makes sense

[tired marsh]

import only looks in the sys.path in python, with "" meaning the directory of the main file (or repl)

[civic rune]

ahh neat thanks for the info

I have to go to my system which is away from wifi but I really appreciate your assistance

[tired marsh]

(whereas in PHP for example it always looks in the current file's directory too)

[white ember]

I'm having a problem with the 3.5 Inch touchscreen display that Adafruit has to offer. When ever I load Octoprint on my pi, the touchscreen doesn't register any input. How do I fix that?

[civic rune]

Having a weird issue when I import my testing script into the repl

I have a method switch_to(pin) that turns off all pins except the one you pass in which gets turned high. When I run in the REPL:

import testing
testing.switch_to(2)

Gives me the runtime error "Please set pin numbering using GPIO.setmode(GPIO.BOARD) or GPIO.setmode(GPIO.BCM)"
However I do this at the top of my testing.py script, using GPIO.BCM.

[slow otter]

@ruby night The slow clocking of the I2C for the pi 3&4 was a no-go as well on the MCP9600... even down to 1khz. I tried 1khz, 5khz, 10khz, 25khz, 50khz and 100khz... none of those worked.. I'd say this is just a device that does not work on the rpi. The feather works a charm though, so I'll use a lora radio and bop the readings over to a data manager. Thanks for the input here.. good group.

[ruby night]

I agree. Glad you found a way forward. It’s always nice to find away to add a radio into a project .😉 Good luck with it!

[heady cedar]

Yoda speaks using MP3 files, PyGame & an Adafruit Crickit, but as you can see from video in the two tweets below, sound starts out clear, but by the next day sound is distorted. It's not getting worse with each play, time the code is running seems to be the factor. A reboot seems to fix the issue. Any ideas why this is happening?
Here is Yoda after reboot - he sounds clear: https://twitter.com/gallaugher/status/1484300117213597696?s=20
And here is Yoda the next morning - you can hear his distortion: https://twitter.com/gallaugher/status/1484535176625590275?s=20

John Gallaugher (@gallaugher)

Yoda has some advice for my coding students if you touch his right hand. He’ll be in Fulton 460c so you can try out all of his phrases. #iOSDev #CircuitPython https://t.co/fAxRnoqcYG

▶ Play video

Twitter · Jan 20, 2022, 11:01 PM

John Gallaugher (@gallaugher)

CircuitPython & @Raspberry_Pi peeps, any idea why sound gets gravelly after being on overnight? Reboot resets to distortion-free sound but unsure what’s up. Am using a Crickit & PyGame for audio on the Pi. You can hear this is distorted vs clear version posted last night. https://t.co/RHtijSpFs8

▶ Play video

Twitter · Jan 21, 2022, 2:35 PM

[plain heron]

I have a question what is the different between this 2 pies ?

[ruby night]

odd -- the bottom one has a BCM2837B0 which should be on a 3 B+ .... https://www.raspberrypi.com/documentation/computers/processors.html

[plain heron]

so the bottom is beter

[ruby night]

looks like it can be run a bit faster, but I have no idea if it really makes any difference in practice. Mine are all like the top one.

but it looks like Waveshare makes them differently https://www.waveshare.com/rpi3-b.htm

[plain heron]

thx

[mental flicker]

Using Pi 0 and 16 channel bonnet: where do I wire 2 buttons for GPIO to operate servos? I have 9 servo's. I want Button 1 to operate 4 servos and Button 2 to operate 5 servos. Do I wire the button to the bonnet, or the Pi? I did the Adafruit tutorials: wired a button to Pi0 GPIO 5 to turn an LED on and off. Put the servo bonnet on and ran the program to move servo's around. ...but now, how do I wire and program 2 buttons to operate the servos?

Current set up. Soldered wires to PiZero GPIO 5 and 6 and ground.

[turbid rivet]

The program I'm less familiar with, but those numbered holes correspond to the associated GPIO on the Pi. They are connected to each other, so you can use whichever is more convenient for you.

The software will have to detect the button change state, so you will have to wire them to an input and a GND or 3.3V, depending on pull direction.

https://raspberrypihq.com/use-a-push-button-with-raspberry-pi-gpio/

[steady rose]

@mental flicker yep. use that row on the bonnet. that's what it's there for - general purpose tie in to PI GPIO.

the bonnet itself only uses SCL/SDA

[mental flicker]

Okay, I'll desolder GPIO 5 and 6 on the Pi Zero board, and the ground for the button can go to the ground above servo 3?

My current bonnet

[turbid rivet]

No, don't desolder those. The buttons should just work if you connect them normally.

[mental flicker]

Already desoldered from Pi and resoldered to the bonnet

[olive haven]

How are you connecting the 2x20 row of pins at the top of the two boards?

[mental flicker]

Just the normal 2X20 pins on the Pi that plug into the bottom of the bonnet

[turbid rivet]

Oh, I see, you meant the wires. I thought you were desoldering the pins haha

[mental flicker]

With this picture, it is all a matter of programming now? green from #5 on the bonnet to the blue button on the bread board. yellow from the #6 bonnet to the yellow button on the bread board, and ground (black wire) from the ground above servo attach point 3 to the negative (picture shows black jumper going into the + (red line on bread board, I just changed it now).

[steady rose]

move this to ground rail on breadboard so it connects to buttons?

then enable internal pull ups on the button GPIO pins

[mental flicker]

Thank You!! I appreciate you catching that! Right after I posted, I noticed it and moved it to ground. Reading about pull ups, just not understanding. I think I'm overthinking, except... my brain is dead.

[wintry apex]

Hi All - curious if anyone else here is using Oh My Zsh on their RPi. I have it installed, and it ALMOST works as expected. I get funny characters instead of the symbols I'm expecting.

I suspect it's probably a font issue of some kind, but I have tried a couple of things I found searching around, and it has not fixed the problem.

For example, here's a comparison between the prompt I get on my Mac vs. RPi. Running the same theme.

[mental flicker]

In this discussion, it says the first 8 GPIO's have pull ups set, the rest are pull down. Does this mean I don't have to make any programming changes to ensure GPIO 5 and 6 are pull up? https://forums.raspberrypi.com/viewtopic.php?t=202568

[steady rose]

you'll want to regardless

you can't rely on boot behavior

[mental flicker]

Also in the picture of my board I do not have any power going to the buttons. GPIO 5 (green wire) goes to the blue button, GPIO 6 (yellow wire) goes to the yellow button, the other side of the button they both go to ground. Nor do I have any resistors.

[steady rose]

have you worked with buttons before, and the general concept of pull up/down resistors?

[mental flicker]

I wired buttons to run a sound board from Adafruit. I just assumed they complete a circuit to allow a program to run. No clue about pull up/down. Reading about it now. I see all kinds of examples showing power going to the buttons. https://raspberrypihq.com/use-a-push-button-with-raspberry-pi-gpio/

[steady rose]

see if this write up helps:
https://learn.adafruit.com/circuit-playground-digital-input/floating-inputs

and read the pull up/down sections also

it helps to understand what the general issue is (floating input) and how it can be fixed (pull up/down resistor)

[mental flicker]

enabling internal pull ups is a circuit python programming step, correct? Not a physical wiring /resistor, etc... matter?

[steady rose]

first comes the capability of the hardware - in the BCM chip on the Raspberry Pi

not everything provides internal pull up/down resistors

some provide only one

i think pi is pull up only

then comes the software to use the hardware, which should include some way to specify enabling the internal pull up resistors

here's the general GPIO discussion specific to CircuitPython:
https://learn.adafruit.com/circuitpython-essentials/circuitpython-digital-in-out

switch.pull = Pull.UP

that's an example of code line that enable the internal pull up

[mental flicker]

Interesting. They give examples of using a 10k resistor. Since I want to pull it up (not sure why up instead of down) is it best to add power to the switch and use a 10k resistor, to physically make sure it is pulled up? If I understand correctly, if I put the 10k resistor to the ground, that will physically pull it down.

[steady rose]

learn guide linked explains up vs. down

you only need external resistor if internal ones are not available

for the pi, internal pull ups are available

[mental flicker]

Ok, cool. Sorry just finished the floating pages and starting the learned guide

[steady rose]

read next two sections also

Pull It Up and Pull It Down

oh, and Which Way?

although that last one doesn't really answer it fully..:)

[mental flicker]

lol, 'which to use... it depends!'

[steady rose]

you only have pull ups available. so easy choice in your case.

also, perfectly fine option

[mental flicker]

Thank you, and I confirm it with making sure the circuit python code has: switch.pull = Pull.UP

[civic rune]

having a weird issue where flashdrives don't mount on a pi (I have had this issue in the past but my workaround is now not working). The SD card with the OS was previously in a 3B+ but I moved it to a 3A+ for reasons. I'm trying to get a .py file off the desktop onto a flashdrive. However, the flashdrive doesn't appear as normal, it shows up in /media/pi but I can't eject it and can't copy stuff to it.

In the past I have copied stuff to \boot and then used windows to get the files onto my PC. But now I'm getting "permission denied" errors when I try to copy/paste my py file.

Anyone have any ideas what I should try next?

[turbid rivet]

I thought Pi is configurable, and by default they're like half of them up other half down or something?

[steady rose]

does it have pull downs? it's been long enough i really am not sure.

too many MCUs to keep track of 🙂

it totally might...

lemme check

[mental flicker]

I was having a problem finding .py files. I installed WinSCP and used it to log into Pi and then I could easily move things around from my computer to the SD card that is on the Pi

[turbid rivet]

A GPIO pin designated as an input pin can be read as high (3V3) or low (0V). This is made easier with the use of internal pull-up or pull-down resistors. Pins GPIO2 and GPIO3 have fixed pull-up resistors, but for other pins this can be configured in software.

[steady rose]

right - the I2C pins do have external pull up resistors

that's GPIO2/GPIO3

[turbid rivet]

So two particular pins are missing pulldown because IIRC those would be the primary I2C pins.

[mental flicker]

I have over 20 windows open, trying to learn, and I've seen so many things. I did read the first 8 were default to pull up. The rest pull down.

[steady rose]

and it's because of I2c

in terms of the BCM - i think you're right - it has both

[mental flicker]

Should not matter if it is pull up or pull down, because I will put in the code to pull it up, right?

[steady rose]

@mental flicker ok, i think i was wrong saying only ups were available. but you'd wire differently depending on which you use (see same learn guide linked)

code logic would change also

[turbid rivet]

In any case, for most cases, you shouldn't have to worry about using one over the other. The important part is to make sure whichever configuration you use, your software definitions matches your wiring.

[steady rose]

@turbid rivet thanks for checking my rusty knowledge 🙂

[mental flicker]

And I assume based on my wiring, and your knowledge of pi, internal pull ups would be fine.

[steady rose]

since you've already soldered a wire to the GND pad on the bonnet, i'd stick with using internal pull ups

[mental flicker]

I tossed in the digital pull ups! Mixing various project code I'm finding to try and make the button work.

Of course this isn't working. So I think I shall move this conversation over to circuit python.

[civic rune]

so I can find my USB drive using dmesg, so the pi is aware of it, but it just is choosing not to mount it.

I'm following this guide https://www.sparkfun.com/news/2332 in here they say their device is mounted to /dev/ttyUSB0. I don't see anything like that in my log. Is that because it didn't mount?

silly question, I ran dmesg | less but I can't seem to exit out of the context that brought me to.

pressing random keys brought me to the man page lol

[steady rose]

q

[civic rune]

h gave me help, is that a common thing?

Enough that I should remember it?

Anyways it was suggested that I look into "udev rules" to solve why this USB drive isn't mounting but I am a little lost. Can you point me further in the right direction?

[steady rose]

not really. it's a broad topic.

[civic rune]

a board topic?

[steady rose]

broad

[civic rune]

ahh

OK

Hmm, so basically someone did something to this pi to get it into this state and now it's just borked. I wanted to do some learning about this

[agile depot]

Hello, I'm trying to backup my original Xbox's EEPROM using this tool: https://github.com/MarioMasta64/PiPROM but after installing bcm2835 and building and running PiPROM successfully I get this error: bcm2835_init: gpio mmap failed: Cannot allocate memory Failed to initialize bcm!
What does this mean? I've even installed the latest bcm2835 version (1.71) and it still gives the same error.

[fickle shard]

seems like a text encoding issue, but thats all i know

[mental flicker]

What would cause this? On the left (as per Adafruit instructions) I had this screen. Something changed last night and I ended up with the screen on the right, and then lost connection, and had to flash the entire board and start new again. Could it be conflicting code? Like if I used Adafruit circuit python and then tried some GPIzero code?

After a few hours this morning (reflashing and reinstall everything) I have the 'normal (?)' screen on the left again. And all 12 servo ports (didn't solder in the last 4) operate the servo's fine from the PiZero and the 16ch bonnet, with the screen on the left still being what comes up when I check it. So I wonder if I put some crazy conflicting code in when trying to set up a button?

[fickle shard]

@halcyon relic if you run sudo i2cdetect -y 1 do you see two devices?

[halcyon relic]

yes, theyre alive and at two addresses

0x76 and 0x77

All I need is the bits of code to display them

The screenshot of the code is working and I get values, but just of one

[halcyon relic]

to display both*

[fickle shard]

then you should just be able to make two adafruit_bme280.Adafruit_BME280_I2C objects, but pass in different addresses. like:

bme1 = adafruit_bme280.Adafruit_BME280_I2C(i2c, address=0x76)
bme2 = adafruit_bme280.Adafruit_BME280_I2C(i2c, address=0x77)
``` and just use `bme1` or `bme2` when referring to them in code

[halcyon relic]

nice, it worked

[clever venture]

Can anyone help me with NRF24l01 wireless module. I got the code and set up everything there is a little problem with communication. Please let me know if anyone can help me with that

this is from send.py

this is from receive.py

[hardy plaza]

You may see a response from i2cdetect like the image on the right (where all addresses are listed) when there is a physical wiring problem with the I2C bus itself, such as a short circuit, a bad device or one whose power supply is wired incorrectly, SDA/SQL pins swapped, that kind of thing. When something like that happens to me I disconnect all my I2C devices and gradually plug them in (unpowered, not powered) until the culprit is revealed. If you've got a lot of servos hooked up I'd say it's very possibly related to power supply issues.

So in the end, was it that you had two contending devices on the bus?

[mental flicker]

I have no clue. Things went worse, PUTTY crashed, and I couldn't even log in. So I just took the SD card, flashed it, and started all over. Right now it shows the normal (left) image when I run my tests. Previously I had only added two servos. This morning I added all I have, 7 right now, and it worked fine. I wondered if it was incorrect code from different places (GPIzero, Python, CircuitPython, and who knows) as I tried dozens of things to get the servo to work with a button.

[hardy plaza]

Next time that happens don't just immediately flash the card. Insert it into a laptop or workstation and locate the /var/log/messages or /var/log/syslog files to see what happened. Otherwise it remains a mystery and you haven't learned what went wrong, as you said, you still have no clue.

[mental flicker]

Oh! I didn't know you could do that!! Thank you!!

[hardy plaza]

Yeah, the Raspberry Pi is a typical, normal, complete Linux computer. Linux computers store pretty much all activity in their logs, including warnings and errors. If your Pi got cut off before it was able to write the log, that'd be unusual. You'd at least see in the log what it was doing as it died.

[white ember]

I'm having a problem with the 3.5 Inch touchscreen display that Adafruit has to offer. When ever I load Octoprint on my pi, the touchscreen doesn't register any input. How do I fix that?

[glacial gale]

how do i set up my pi to send code to a microcontroller

[ripe berry]

You mean something like this? https://www.pedalpc.com/blog/program-pic-raspberry-pi/

[ruby night]

What are you trying to do? I’m not sure I understand the question.

[glacial gale]

i want my pi to handle most of my programming and my microcontrollers to handle most of the perifial

[ruby night]

Do you want the MCU to be in continuous communication with the Pi or just be able to transfer programs to it as needed?

Also what MCU and are you using Arduino or CIrcuitPython on it?

[glacial gale]

as needed i thnk. im making a pipboy

im thinking of having the micro switch on when the different sections ar selected to help conserve power

im using feathers, qt pys and metro m4s, so i think its all CP

[ruby night]

On the Pi, do you have the full Desktop or are you just using the "lite" command line only version

[glacial gale]

im not sure, my instructor already installed it. i think he used noobs

it looks like a desk top though

[ruby night]

OK - If you connect a USB cable from you Pi to the MCU -- it will mount as a disc drive name CIRCUITPY

You can write code on the Pi with any editor -- the copy the files (drag/drop) to the CIRCUITPY drive. The Mu editor is highly rrecommended. It should be on the Pi already

[glacial gale]

thing is, im not sure if ill have enough usb slots and id like to end up with a fully wired and soldered setup

[ruby night]

This guide may help https://learn.adafruit.com/welcome-to-circuitpython/creating-and-editing-code

You want the MCU permanently wired to the Pi?

[glacial gale]

i am looking to have the pi in the final project

not program with it

[ruby night]

If you are short on USB ports -- add a powered USB hub,

I guess I'm still not seeing the "big picture"

[glacial gale]

im making a pipboy and will have the pi as the central hub controlling everything with break outs being controlled by the microcontrollers. the micros send the relevent info back to the pi so the pi can display it. to allow more to fit i may end up removing the usb all together

[ruby night]

Ah -- OK I did not understand that you want them all communicating all the time. Much different problem.

[glacial gale]

currently i am programming on a feather, but am running out of room so im looking to upgrade. im not looking for them to communicate all the time but, for example, if i have the radio selected, the breakout and the mcu turn on and start running code/talking back to the pi while the mp3 player shuts down. the only things i plan on running constantly is the geiger counter, the screen, and have an option to lock the mp3/radio on

id like to do the lock with a button that is on the selector but i havent gotten to the shell design

[ruby night]

I don't have a simple solution in mind...For one MCU you could use a UART connection.. For several, I'm not sure what the best approach might be. Can you just use GPIO pins to send a "signal" to control the MCUs. That is toggle a pin on the MCUs to make it do something. Do you really need to exchange information between them?

[glacial gale]

kinda. the radeo needs to tell what channel its on, the mp3 player needs to list song info, the map needs to display the map, ect

[ruby night]

I hope others can jump in to help with suggestions.

I have connected several breakouts to a single pi. That is not problem, but connecting several MCUs is a different problem...

You may be able to use one of the "bus" protocols (I2C, SPI,Can) but it won't be a simple thing to do.

You would need to set up the Pi as the BUS controller and each MCU as a Peripheral. Usually the MCUs are the Controllers and I'm not sure how (or if) you can run them as Peripherals but it is something to look into.

[glacial gale]

if i can set it up to where each mcu contrlls just their breakout, then communicate that info to the pi, it should work fine, kinda like what our computers are doing now

i set the selector switch to the enable pin of the mcu and to a gpio on the pi and that tells the pi what is turned on without actually truely connecting. i then set the mcu to send info over data, essuntually using each mcu and breakout as a usb device that is hardlined in. at least thats what im attempting

[ruby night]

You can use `pyserial' to set up communication with multiple USB devices.

[glacial gale]

i am wondering how big a breakout the qt py can handle, because i can fit alot of those in the pipboy, if there are enough pins on it that is

one thing ill need to do is dedicate a usb to outgoing info to another computer, but that should be easy yes?

[ruby night]

"easy" is a very subjective term 😉 If I am understanding, I think the answer is yes, but your project sounds very complex to me so I I don't want to make promises...It should be fairly simple to get a Pi to communicate with another computer via USB.

[glacial gale]

ok, that last part simplifies what i was trying to say. ill be doing a custom connector for it, nut it will function like a usb and communicate with the device its plugged into

a simple usbc to custom port adaptor should make it fairly universal too

[ruby night]

I am going to step back and hope other more knowledgable folks will step in to help. I know there are many others who can be far more helpful than I. Good luck!

[humble marsh]

@glacial gale if I understand correctly, there is a central control program running on the RPi (running Linux), and several microcontrollers?

[glacial gale]

yes

[humble marsh]

each microcontroller can use usb_cdc.data (https://learn.adafruit.com/customizing-usb-devices-in-circuitpython/circuitpy-midi-serial#usb-serial-console-repl-and-data-3096590-12) to talk to/from the RPi. Then the central program on the Pi can mediate all that. That is probably a simpler design than having the microcontrollers talk to each other individually.

Each micrcontroller would have its own /dev/ttyACMnn port

[glacial gale]

They were not going to talk to each other, just the pi, though it may not matter, still may be complecated

[ruby night]

@humble marsh Thanks for stepping in. I knew I was forgetting something!

[humble marsh]

Here is an example of using usb_cdc.data to send data to a host computer. It's using json: you may not need that -- you could make up your own ad hoc serial protocol. This example only sends data up to the host: you'll want to receive data too https://learn.adafruit.com/diy-trinkey-no-solder-air-quality-monitor

[somber yacht]

Hi guys! I'm new the raspberry pi world. I have a raspberry pi zero w. I am planning on using this hat https://www.adafruit.com/product/2345 to control an rgb matrix. I also want to install a powerbutton I was planning on following this tutorial https://www.youtube.com/watch?v=wVnMZ4DXDNo&ab_channel=Howchoo Im not sure how to do that when the gpio pins will be taken up by the hat. I have extensive coding knowledge but when it comes to hardware I have no idea what I am doing. If anyone can help/point me to resources that will help me understand that would be very much appreciated

[olive haven]

@somber yacht There's a row of labeled holes below the header on that board, the labels being the GPIO numbers. GPIO3 isn't one of them, but I don't think there's anything magic about that pin, as long as you change the code to match. Ground and power holes are below that -- you should just need one of the ground holes.

So you can wire the button between say GPIO5 on that top row and one of the ground pins right below it

[somber yacht]

@olive haven Thanks, i probably should have done a little bit more research before posting this! I thought shorting those pins was something built into the operating system/board to power on and off. Kind of like the power pins on a desktop motherboard. I looked into how the program works and your right. I can just switch to a pin thats not being used!

[olive haven]

I think 3's a popular choice for this kind of thing because it's right opposite a ground pin on the header.

[civic rune]

It also has a special wake functionality

So a Mom-On switch used there will shutdown and wake the pi

[civic rune]

Running into an issue with some test code I wrote that worked earlier but now is throwing errors when I swap the SD card to another pi.

Code is

def setup():
    GPIO.setmode(GPIO.BCM)
    for i in range(2,27):
        GPIO.setup(i, GPIO.OUT)

Error is:

/home/pi/testing.py:8: RunTimeWarning This channel already in use....
GPIO.setup(i, GPIO.OUT)

I didn't think that when coming from a cold start that any gpio would be in use.

Get that error when I run

import testing as t
t.setup()

[velvet frigate]

you can ignore it, its a warning. if you want to disable warnings use

GPIO.setwarnings(False)

[civic rune]

I saw that but I don't like to ignore warnings unless I have a deep understanding as to what they mean

[halcyon relic]

Hello, I need some help to get an output to an lcd with data coming from InfluxDB.
I have two sensors that feed a database. Grafana gets the data from there and I can watch it on my PC. I want to add a lcd so that I can also view the data without having to log into an PC.

I use a raspberry pi zero 2, two Adafruit BME280 and a Sparkfun SerLCd. Ask necessary drivers etc. are installed.

The code to read it the sensors works fine on it's own.
The sample code for the lcd works fine on it's own.

I can't code, my rough thinking was I can somehow merge these two codes, but that didn't work of course.

I'd appreciate it if anybody could guide me in the right direction on how and what code I need to embed into my sensor code to get it to display the data.

I uploaded the code here: https://gist.github.com/overcast7/bcb8bcff9e7e84f5dfaa6970c7ff7ed8

[olive haven]

The basic thing is that since you don't have to do it all in a single program. You can run the sensors_to_influx.py as is, and write another program say influx_to_lcd.py that reads data from the database and displays it.

You can run the sensors_to_influx.py (or any other raspi program) in the background from the command line
python3 sensors_to_influx.py &. It'll print out something like [1] 20614 and then give you a command prompt. The [1] indicates that you can foreground the program by typing %1 at the command line.

(the 20614 is the OS process number for the program.)

[halcyon relic]

I'd be okay with that too, but my code-knowledge on how to grab the data from InfluxDB and put it on the lcd is too limited unfortunately

[olive haven]

Divide and conquer: do you know how to get data from InfluxDB?

I don't know that a particular DB, but I would think that the InfluxDBClient class contains methods to read data as well as to write it (as your code does with client.write_points)

What version of InfluxDB are you using?

[halcyon relic]

I'm not at the pi at the moment, I recall 1.6

But with your idea I found some good results online (keyword: querying) that I'll try in the evening

[glacial gale]

So, if i understand correctly, id set up buttons as shortcuts that would run code in a way similarly to repl

[humble marsh]

I was just showing that example to show how to send data back to the host. The buttons were not so much the point: it's the use of usb_cdc.data.

btw, we have fixed the "b" problem in open(): https://github.com/adafruit/circuitpython/pull/5896 https://github.com/adafruit/circuitpython/issues/5895

[glacial gale]

So it will report the issue now? Or does it not register as an error at all so the script continues as normal?

[humble marsh]

it will report it as an error (which is what regular Python does).

[glacial gale]

kk

[halcyon relic]

Hey @humble marsh could you have a look at the code from two days ago for me? Im a bit proud that I now got three sensors working, but I have troubles figuring out the json_body fields

[humble marsh]

sure, upload it

[halcyon relic]

I saw that I had a SHTC3 laying around that I could use because its on address 0x70.
I then also used the adafruit drivers (in the old script it was a unoffical driver)

Bare with me, its not pretty. I just tinkered and got it working....

Line 44 is to stop it from flooding my Thonny

And well, the name fields I just added to see if I get all sensors in the output (with only the raw values it was impossible for me to check) I used this because I couldnt use (data.id) like before, since I didnt know how to address data

And because date = referred to code from the github BMW280 driver (which I no longer use)

So what I uploaded works and I get to display it in Grafana, but only one sensor of course since I got stuck

[real cipher]

Hello, good morning/evening, I wanted to know if there is any way to boot the raspberry pi pico as autorun, thanks

[naive scarab]

Good morning, I have found a new revision code c03115 which is causing me issues with trying to get neopixels to run. Could someone please open a PR for the relevant libraries? Thank you 😊

[olive haven]

You can create a service which runs on boot. See https://www.raspberrypi.com/documentation/computers/using_linux.html#the-systemd-daemon. Or you can use cron to schedule a task on reboot: https://www.raspberrypi.com/documentation/computers/using_linux.html#running-a-task-on-reboot

[olive haven]

Sorry, I see you asked about the Pico. Pico isn't a Raspberry Pi in the sense of a small computer that runs an operating system like Raspberry Pi OS. (This discussion group is about those computers and operating system.) The Pico is a microcontroller board that will run whatever software is loaded into its flash, like an Arduino sketch, or a Python interpreter like CircuitPython or MicroPython. Either of those Pythons have a way of specifying what Python code to run on boot.

[faint sparrow]

I would ask in #help-with-arduino or #help-with-circuitpython wrt RP2040 boot automagic. ;)

Since it'd be hard to not autorun in Arduino sounds like a python question. I don't remember the deal on that.

@real cipher Earle Philhower's implementation for Arduino is usually a good choice for RP2040.

there's also an arduino.cc implementation, which is based partly on mbed ideas/code.

The cmake driven pico-sdk is another choice.

Plus at least two python implementations.

Like any other C/C++ program:

https://github.com/raspberrypi/pico-examples/blob/master/blink/blink.c#L9

[soft sierra]

Hi! I'm not sure what is the best place to ask this, but I'm having issues with a LSM9DS1 module, specifically with mki159v1, which isn't adafruit's, but is pretty similar. I'm not able to get it communicating via I2C to a Jetson Nano. i2cdetect detects the module on bus 1, on adress 6a and 6b. But I'm getting the error No I2C device at address: 0x1e, and looking around in the adafruit_lsm9ds1 library, I'm guessing that I'm also supposed to get a device detection at locations: 0x1c and 0x1e(for the magnetometer, perhaps?), which I'm not. Have I missed something? Currently, there are 4 pins connected to the module: Power Supply and Ground, and SDA, SCK for I2C. Am I doing something wrong?

[faint sparrow]

@soft sierra the i2c bus operates Open Drain.

That means you must use pullups or it won't work at all.

[ruby night]

I don't see any pull-up on the schematic https://www.mouser.com/datasheet/2/389/steval-mki159v1-1848591.pdf

[soft sierra]

I didn't see any mentions of this in the documentations I've been reading, with either the breakout, or the IMU

Can you direct me to some article related to this?

[faint sparrow]

I take your word on it that it's i2c. The i2c bus is as I've described it.

It's kind of a deep knowledge thing; I have no clear idea where you can validate my assertion.

[ruby night]

https://learn.adafruit.com/circuitpython-basics-i2c-and-spi/i2c-devices fourth bullet

Some computer boards (Raspberry Pi) have I2C pullups installed on the board, but most Microcontrollers do not so eitehr they are on the sensor board or have to be added.

I don't know if the Jetson has them.

[soft sierra]

it definitely is i2c, with which I have next to none experience, causing this confusion

[soft sierra]

thanks a ton!

[faint sparrow]

If you add a second set of pullups (one set is hidden from your knowledge for any number of reasons) it'll probably still work okay.

[soft sierra]

it doesn't, I'll have toadd it externally

[faint sparrow]

Once you add the pullups, and try it with and without them, you'll get a feel for it.

[ruby night]

10K is usually a good value for an I2C pull-up

[soft sierra]

okay, thanks!

One thing that still confuses me though, is why am I getting some detection(accelerometer and gyroscope) on the right addresses(6a 6b)? If it shouldn't work, I shouldn't be getting any result, right?

[faint sparrow]

First guess is your firmware isn't error-detecting as certainly as it could.

Since the pullup is required, and you dont have it, the first thing to do is to have it. ;)

There's no point in asking questions about forks that you will not be traveling through. ;)

[soft sierra]

true, alright, I'll get that done and let you know if it works out. Thanks for the help @faint sparrow @ruby night

[faint sparrow]

;)

[ruby night]

Good luck!

[faint sparrow]

Getting a home-brew radio receiver working that first time is really hard; repairing it when it fails is comparatively easier. ;)

So get it working, then you are in the position to ask supplemental questions.

[soft sierra]

okay, there's progress! I'm now getting one of the two addresses that I wasn't getting(0x1c). Although the error is still the same. And it turns out, I wasn't reading the data sheet of the module as thoroughly as I thought I was. It did mention that I needed to pull out both the pins, which somehow went above my head.

[olive haven]

@soft sierra The Wikipedia article https://en.wikipedia.org/wiki/I²C is a good reference.

[faint sparrow]

can you read analog sensors with the proper HAT if so which ones?

and is it even a good idea with a mini-computer like the pi?

[umbral sable]

I can't recommend a specific one, but an "ADC hat" is probably what you're looking for. Whether it's a good idea depends on the scope of the problem you're trying to solve. If you are reading a sensor and lighting up a LED in response, it's probably overkill. If you're reading a sensor and using it to automatically adjust the weather in a Minecraft server running on the Pi, that's much more reasonable, heh heh.

[faint sparrow]

I'm questionning wheter arduino and other microcontroller are obsolete now that most good sensors seems to be digital IC2

not sure why i'd even need analog anymore unless I'm using very cheap throwaway beginner sensors

when basically most chips will use analog inside and throw digital data

except for the real-time stuff I see the need for a microcontroller vs a pi less and less as time pass

and even for real-time good sensors have a readings history in them

it seems unless you are doing ham or audio you don't really need analog

[umbral sable]

It's all a sliding scale of features versus cost and power consumption. There's a whole spectrum of chips from 8-bit MCUs up to GHz MCUs and into embedded CPUs. Nothing's really going obsolete, just optimized for different purposes.

[turbid rivet]

While many sensors have, in fact, come with more digital interfaces today, there are still a slew of applications where having an ADC onboard is far more cost-efficient than designing with the digital ICs.

I can also say from personal experience that using an ADC is far more robust of a system than relying on everything I2C/SPI...

If not for the efforts of manufacturers like Adafruit or Raspberry Foundation making these digital interfaces so much more accessible, we might still be restricted to analog sensors for a lot of personal development, even today.

[stuck quarry]

Is this the wrong place to get help with RP2040?

[lost wolf]

Kind of. What language are you using it with?

[turbid rivet]

I think we've been kinda loose about it, since it technically has Raspberry Pi in the name, but this channel is usually browsed by people more familiar with the single-board computer type of Pi.

[lost wolf]

This is more for Raspberry Pi single board computers.

[turbid rivet]

You usually find better help with those in the software help channels or the project help channels, where Arduinos and other microcontroller projects are more common.

[stuck quarry]

Well I tried with python because setup was so easy but really wanted to use C, and I'm wondering what people's thoughts are on using the unofficial Arduino support because I can't for the life of me get it to run C based on the official documentation, particularly on a Windows machine.

[stuck quarry]

TY Hem. I'm new here. Can you suggest a specific channel based on my above statement?

[lost wolf]

Welcome! I would suggest #help-with-projects.

And we use the Philhower Pico Arduino core. It's pretty solid at this point.

I'm in the middle of adding usage to all of the RP2040 guides, as it happens.

[stuck quarry]

Oh cool! Can you point me to any of the docs you are working on, or a preview of they are not yet live? Pretty new to all this but I've found the Arduino tooling surprisingly awesome and intuitive.

[lost wolf]

@stuck quarry What RP2040 board are you using?

Depending on which board, I can point you to a guide for a different board which obviously wouldn't be specific to your board, but it's easy enough to figure out what to do based on the info. However, if I've already done it for your board, even easier.

[stuck quarry]

Feather RP2040 because it's a really cool board and I happened to get two of them free with Adafruit orders during the promotions.

[lost wolf]

OK, I haven't completed Feather yet. Let me get you a link to another guide.

[stuck quarry]

Ok thank you so much!

[lost wolf]

https://learn.adafruit.com/adafruit-itsybitsy-rp2040/arduino-ide-setup

It will be the same process, but pick Feather RP2040 instead from the menus.

I don't have a lot of Arduino experience, so you're lucky to have caught me in the middle of something I actually have an answer for 😄

[stuck quarry]

I certainly do feel lucky!

[lost wolf]

@stuck quarry The ItsyBitsy is actually a good example, because the standard I2C pins are WIRE1 on the Feather as well, versus WIRE. The STEMMA QT connector on the Feather is WIRE. It's a bit of a gotcha compared to other Arduino boards. Anyway, good luck! Ask any further questions in #help-with-projects or #help-with-arduino.

And you only need to post in one channel. 🙂 Folks who are able to respond will see it.

[faint sparrow]

As far as I know, all the RP2040 sdk ports leverage the pico-sdk so in that sense they're 'wrappers' to the factory supported SDK.

That means all the cool stuff is available.

Most follks will go Earle Philhower and call it a day, unless python is wanted.

[stuck quarry]

Thank you so much!

[vale ferry]

bit of an RPi newbie here, which pin is board.D5?

And where can I find a list of all of the boards

*pins

My code:
import adafruit_max31855

from digitalio import DigitalInOut
import board

spi = board.SPI()
#this declares which of the pins are used to enable the chip
cs = DigitalInOut(board.D5)

sensor = adafruit_max31855.MAX31855(spi, cs)

print(sensor.temperature)

However I think that this is working because the Chip Select on my device is low/not connected. Which pin would board.D5 end up being?

[ruby night]

https://pinout.xyz

D5 refers to GPIO 5

there are lots of pin numbering conventions for the Pi so be careful

[vale ferry]

Okay so changing to D8 should use GPIO8?

[ruby night]

yes

[vale ferry]

thanks!

[ruby night]

You're welcome

[civic rune]

Running into strange behavior. When I run my GPIO setup method:

def setup():
    GPIO.setmode(GPIO.BCM)
    for i in range(2,27):
        GPIO.setup(i, GPIO.OUT)

And then run

for i in range(2,27):
     print(i, GPIO.input(i))

I get all 0s as expected except for two pins: 7 and 8, those show as 1
anyone have any clues?

Here GPIO is RPi.GPIO

[steady rose]

@civic rune floating input issue

[civic rune]

What do you mean?

[steady rose]

need to enable internal pull up/down resistors

depending on what is wired and how to the pins

https://learn.adafruit.com/circuit-playground-digital-input/floating-inputs

https://sourceforge.net/p/raspberry-gpio-python/wiki/Inputs/

also, you configured for output

[civic rune]

I intended to configure for output. The second bit of code is the only way I know to get the state of a pin

I assumed when you configured the pins as outputs they would default low

[dapper steppe]

Can anyone tell me where to find the physical dimensions on the Adafruit MacroPad RP2040? Sorry if wrong forum for this question.

[tired marsh]

there is that: https://www.adafruit.com/product/5100#tab-technical-details-heading
and also that: https://learn.adafruit.com/adafruit-macropad-rp2040/downloads#fab-print-3099247-7

[dapper steppe]

Thanks. No idea why it didn't load the details on the product page when I went there before...

[tired marsh]

for height of the whole enclosure I'm not sure how to evaluate that

[dapper steppe]

no worries, I'm considering using it as part of a guitar build, so the guitar is going to be the enclosure and it'll act like a midi controller.

again, thanks for the links.

[tired marsh]

oh interesting idea

[halcyon relic]

Hi, I have a display that I just write code for to get it to display temperature and humidity readings. It works, but it shows way too much decimals. How can I tell it to only show one, like 40.1°C? Currently I have:

lcd.setCursor(0, 0)
lcd.print(f"T:{temperature_celsius} C RH:{humidity} %")
lcd.setCursor(0, 1)
lcd.print(f"P:{pressure_hpa} hPa ")

[steady rose]

looks like you're using f-strings:
https://docs.python.org/3/tutorial/inputoutput.html#formatted-string-literals

add a : and then use format spec:
https://docs.python.org/3/library/string.html#formatspec

>>> import math
>>> math.pi
3.141592653589793
>>> print(math.pi)
3.141592653589793
>>> print(f"pi = {math.pi}")
pi = 3.141592653589793
>>> print(f"pi = {math.pi:5.3f}")
pi = 3.142
>>> 

[halcyon relic]

Thats what I googled too, but I figured it out by:

data.temperature = round(data.temperature, 1)
data.humidity = round(data.humidity, 1)
lcd.setCursor(0, 0)
lcd.print(f"T:{temperature_celsius} C RH:{humidity} %")
lcd.setCursor(0, 1)
lcd.print(f"P:{pressure_hpa} hPa ")

😃

[snow aurora]

What libeary do you use for that?

[halcyon relic]

You mean language?

You need a "driver", something like this:
https://github.com/sparkfun/Qwiic_SerLCD_Py

[halcyon relic]

Then you can create a file "example.py" and open it with something like Thonny. There you can write the code and hit play

[supple coyote]

Low distortion, no fisheye, lenses that can do 90 degrees. Anyone have any ideas?

[umbral sable]

In a weird coincidence, I was at an optics trade show this week, and one booth had a flyer specifically about their low-distortion lenses: https://sunex.com/2019/11/22/tailored-distortion-distortion-correction-at-speed-of-light/

[supple coyote]

Well that’s convenient , thanks!

[faint sparrow]

hello, ive been wanting to try out the pi pico with circuit python. but i never understood the pins
like do we just connect any jumper cable to any GPIO and it works the same
or is there like more detailed stuff

is there like a tutorial or a webpage that teaches the different pins

and their functions

[hardy plaza]

https://cdn-learn.adafruit.com/downloads/pdf/getting-started-with-raspberry-pi-pico-circuitpython.pdf

[faint sparrow]

thank you :)

[hardy plaza]

You're welcome. For any microcontroller it's also good to locate a graphical version of its pinout, very handy...

The reason each pin has the different colored options is that most pins can be configured for different purposes, via software.

[faint sparrow]

so lets say i have an led
can i plug that into any GPIO and GND pin?

sorry if im asking like really nooby questions

im just really new to the pico and a curious person by nature

[hardy plaza]

Yes, you can connect an LED (in series with a suitably-sized resistor) between a GPIO pin and ground, noting that the maximum current of all the GPIO pins must be less than 50mA, as according to the FAQ: https://datasheets.raspberrypi.com/pico/raspberry-pi-pico-faq.pdf
I'm not sure what the maximum current is per pin, but on the Raspberry Pi it's 16mA, so you need to choose LEDs that don't consume more than around that limit. GPIO pins in output mode are generally meant as signal rather than power drivers, but LEDs are (generally) pretty low current devices.

[wintry apex]

Thanks - looks like that to me, as well. Not sure how to fix it. I just changed themes for now. Definitely not a show stopper.

[scarlet latch]

Hey guys, i have a small class I created to control a furance. I am just turning a relay on and off that controls my furnace. I wrote the status method to check if it is currently on. However I feel like I should actually check the status of LED(17). Is that possible? Incase it somehow was left on from an old program or something of the sorts. Since it is a furnace I want to be sure.

class furnace:
    def __init__(self):
        self.relayOutput = LED(17)
        self.relayOutput.off()
        self.enabled = False


    def enable(self):
        self.relayOutput.on()
        self.enabled = True

    def disable(self):
        self.relayOutput.off()
        self.enabled = False

    def status(self):
        if self.enabled == True:
            return True
        else:
            return False```

[civic rune]

I mean you set the status explicitly in init, no? Seems fine

[scarlet latch]

okay

sorry im pretty new to python still. Trying to use some best practice

[civic rune]

I'm no expert. I've been writing Python for a few years but no expert. I think you're ok

[opaque wagon]

btw you can rewrite you status func as so:

def status(self):
    return self.enabled

because self.enabled is already a boolean
and if you want to make sure it's exactly True, not just truthy, use if self.enabled is True

[civic rune]

I prefer explicit checks because of how soft typing is in Python.

But that's just me

Trying to make Python C

And rhyming by mistake

If you never assign to self.enabled anything but a boolean, you're fine, and for small projects it's probably never a concern.

[opaque wagon]

in later versions of python (3.9 i'm pretty sure) you can add types to your functions:

def status(self) -> bool:
    return self.enabled

and you can also add them to parameters as well

you can also do it to variables as well i'm pretty sure but then it gets ugly

like

self.enabled: bool = False

[civic rune]

Interesting

[umbral sable]

Note that the type annotations are just "hints" that can be checked by separate tools, not enforced by Python at run-time.

[civic rune]

Yeah that's what I thought

If you want strict typing, you should use a different language

[olive haven]

But it's incredibly useful documentation, hints tool or no

[civic rune]

True

[olive haven]

You can do it in CP -- it seems like the parser implementation is that it allows, but ignores, the ": blah" and "-> blah" stuff

It seems the CP folks are gradually adding type hints all over the place

[west sierra]

Looking for some wisdom and opinions. For a vehicle install of a power management/monitoring system, why would I use an RP2040 Pico or similar instead of a Raspberry Pi Zero 2 W? Power draw? Better sleep performance/power usage? Can someone explain?

[umbral sable]

The power draw would definitely be one angle. The Pico has ADC inputs, if you need those, and is generally going to be more adept with low-level digital interfaces, PWM timers, etc... anything more real-time focused.

[west sierra]

So, it would be better at UART serial connections for RS485/232?

Or, is that still comparable to the Zero 2 W?

[umbral sable]

UARTs are common enough that the Zero would also be fine at that, but the Pico has a more flexible I/O system for more unusual things like, say, Neopixels.

[west sierra]

All this guy would need to do is communicate with some modbus things, collect some stats from sensors, and run a display in the cab of my truck.

[umbral sable]

The main reason to use a Zero would be for the wireless, or for access to the more flexible software resources you get with a full Linux environment and a CPU with plenty of memory and processor power.

[west sierra]

And turn on/off some FETs.

[umbral sable]

The display would also be a reason to go with the Zero, if it's something like a complex graphical interface on a HDMI screen, etc.

[west sierra]

Yeah, that's what I was going for. I have this suuuuuper-wide TFT that I was going to build a cyberdeck out of my 400 with, but I am thinking, it's narrow enough to fit perfectly to be mounted on my dash.

[umbral sable]

That's going to be a better choice, then. The Pico is pretty RAM-limited, so the type of displays it can deal with comfortably is also limited.

[west sierra]

Can I sleep a Zero W?

And, can it wake on power or network or whatever?

[umbral sable]

That I'm not sure of offhand. It would certainly have some sleep modes, but precisely what can wake it from different levels is outside my expertise.

[west sierra]

Totally cool, I will do some research on those bits! Thank you for being here and providing assistance. I truly appreciate all of you.

[hardy plaza]

I came to this discussion a bit late, but I'm guessing you're both aware that you can do explicit type checks:

    if isinstance(arg, MyClass):
        self._arg = arg
    else:
        raise TypeError('expected MyClass, not {}'.format(type(arg)))

Whenever I'm not entirely sure the right argument might get passed I add a type check, or when I'm permitting different classes of arguments I'll handle them according to the check.

[indigo basin]

Hello, real VNC is not connecting even though i can ping the pi. i'm getting:

Timed out waiting for a response from the computer

anyone else had this problem? it's been a while since i used VNC, but i've never had a problem before.

[steady rose]

is VNC server running on the pi side?

https://www.raspberrypi.com/documentation/computers/remote-access.html#enabling-the-vnc-server

[indigo basin]

yes

when connected via SSH and i enter:

 vncserver :1

i get:

Error: A VNC or X Server is already running as :1 [DisplayInUse]

i'm using the recommended client on windows

one variant- my ethernet cable is plugged directly from my computer to the pi. my understanding is that there's really no problem with this- newer adapters manage crossover and IP address negotiation, and again, i can ping and SSH

[ripe berry]

I had that happen to two of my Pi's, and I had to delete them from the Windows VNC client and re-enter them. Worked fine after that.

[indigo basin]

weird... this is the first time using, and i don't realy know how i'd 'delete' them- it's just an IP address in the address bar- no address book or anything

realvnc troubleshooting page states:

"Check the remote computer is switched on. Ensure antivirus software lists VNC Server as an exception, and the firewall is configured to allow access on VNC Server’s listening port (5900 by default)."

i'm using "Raspbian GNU/Linux 11 (bullseye)" which i don't know if it automatically runs a firewall or antivirus

[indigo basin]

fyi got it- rebooting cleared the error, and then i got a message stating the ip address of the desktop, but specifying the port number, which was not 5900 as implied by the error note above, but i was able to simply add the port number to the IP address in the vnc viewer and it worked

[static sparrow]

I am working with the AHT20 temp and humidity sensor. The example code on adafruit site uses “board” library. When I run the example code , I get an error for I2C. So I went to REPL I imported board and did the dir(board) . The I2C wasn’t in the list.

[civic rune]

You mean you get an error when you run

var = board.I2C()?

[static sparrow]

Yes

[civic rune]

Hm

I mean you can always do the other way of setting up I2C

Let me see if I can find it

[civic rune]

Was there a board.SCL and a board.SDA?

[olive haven]

What is board.board_id?

[civic rune]

i2c = busio.I2C(board.SCL, board.SDA)

Gotta import busio but that's it

[static sparrow]

SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries

SPDX-License-Identifier: MIT

"""
Basic AHTx0 example test
"""

import time
import board
import adafruit_ahtx0

Create sensor object, communicating over the board's default I2C bus

i2c = board.I2C() # uses board.SCL and board.SDA
sensor = adafruit_ahtx0.AHTx0(i2c)

while True:
print("\nTemperature: %0.1f C" % sensor.temperature)
print("Humidity: %0.1f %%" % sensor.relative_humidity)
time.sleep(2)

That is what I’m using on a PI zero

I’m not at my computer to answer questions right now

[static sparrow]

I will try this when I get home

[olive haven]

I just set up Blinka on a Pi Zero W, following the instructions at https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/installing-circuitpython-on-raspberry-pi. When I import board, dir(board) shows I2C in the list.

>>> import board
>>> dir(board)
['CE0', 'CE1', 'D0', 'D1', 'D10', 'D11', 'D12', 'D13', 'D14', 'D15', 'D16', 'D17', 'D18', 'D19', 'D2', 'D20', 'D21', 'D22', 'D23', 'D24', 'D25', 'D26', 'D27', 'D3', 'D4', 'D5', 'D6', 'D7', 'D8', 'D9', 'I2C', 'MISO', 'MISO_1', 'MOSI', 'MOSI_1', 'RX', 'RXD', 'SCK', 'SCK_1', 'SCL', 'SCLK', 'SCLK_1', 'SDA', 'SPI', 'TX', 'TXD', '__blinka__', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__repo__', '__spec__', '__version__', 'ap_board', 'board_id', 'detector', 'pin', 'sys']
>>> board.board_id
'RASPBERRY_PI_ZERO_W'

[static sparrow]

Hmm, I will double check and share what I find.

[static sparrow]

Python 3?

[olive haven]

yes

[static sparrow]

Ok

[olive haven]

It's best not to use Python 2 for anything unless you absolutely have to. It's "legacy code", as the euphemism has it.

[nova oyster]

Hey all. I am trying to get the https://www.adafruit.com/product/4741 working on my raspberry pi 4. I followed the tutorial at https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/installing-circuitpython-on-raspberry-pi first then the tutorial on the display itself. When I run the sample code at https://learn.adafruit.com/adafruit-grayscale-1-5-128x128-oled-display/circuitpython-wiring-and-usage I get the following error message about displayio:

I spent a while looking into it and from what i understand displayio is supported on the pi 4. Not sure what to do next. Thanks.

[static sparrow]

Python 3.7.3 (default, Jan 22 2021, 20:04:44)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

import board

dir(board)
['BaseDimension', 'Board', 'Dimension', 'Empty', 'Image', 'InfiniteDimension', 'Infinity', '_Empty', '_InfiniteDimension', '_Infinity', 'builtins', 'cached', 'doc', 'file', 'loader', 'name', 'package', 'spec', '_centred_coord', 'cornerposts', 'functools', 'imagefile_sprite', 'io', 'itertools', 'long', 'os', 'sys', 'text_sprite']
board.board_id
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: module 'board' has no attribute 'board_id'

[olive haven]

I don't know what that's from -- before I installed the Blinka/CircuitPython stuff, 'import board' found no 'board' module -- but it's not anything that the Blinka installation would have set up.

[fickle shard]

pip install board is something different

https://pypi.org/project/board/

[static sparrow]

How do install what I need?

[civic rune]

Idk if you need to uninstall the board you installed first, I would

But one sec, let me get you the link

https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/installing-circuitpython-on-raspberry-pi @static sparrow

[unborn rapids]

why do i always end up on the CIRCUITPY drive when i unplug my raspberry and plug it back in

[olive haven]

Theoretically you can install it with pip. (See https://pypi.org/project/adafruit-blinka-displayio/.) I tried that, and though the install succeeded, I got an error trying to import it in Python:

>>> import displayio
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.9/dist-packages/displayio/__init__.py", line 23, in <module>
    from ._bitmap import Bitmap
  File "/usr/local/lib/python3.9/dist-packages/displayio/_bitmap.py", line 23, in <module>
    from PIL import Image
  File "/usr/local/lib/python3.9/dist-packages/PIL/Image.py", line 89, in <module>
    from . import _imaging as core
ImportError: libopenjp2.so.7: cannot open shared object file: No such file or directory

I tried sudo apt install libopenjp2-7, which succeeded, but then I got a different error. FWIW the adafruit-blinka-displayio version is 0.8.0, so maybe not ready for prime time?

[scarlet latch]

Has anyone run two scripts on a single raspberry PI with paho MQTT. When the second script starts. they seem to both have connection issues, but independently they can both run.

I have both scripts working independently but still having client issues

[unborn rapids]

If some one help me with my raspberry pi problem I pay him :0

[west sierra]

What do you need help with?

[thin wagon]

Hi, I'm stuck with the installation of .net 5 on my raspberry pi, it notes that it has been installed but whenever I ran 'dotnet' it said segmentation fault, anyone know what the issue could be?

[snow aurora]

hey guys, i used to have a small handheld fan. i have lost it's controlling board. now i have the fan itself which has 2 wires now coming out of it. can i use Pico to make it function?

[civic rune]

Do you have a product number for the fan?

[snow aurora]

it just has a series number

it says input voltage should be 5 volts

[civic rune]

Might be a PWM controlled fan, I don't think you can just use a pico

[split token]

would anyone in this channel know what's going on here? link to post in #help-with-circuitpython #help-with-circuitpython message

[elfin vigil]

Hey all so I recently updated one of my Raspberry Pi 4B's with the rpi-update and now it won't boot. I think it's the new firmware that was installed. I have reflashed the latest image and it still won't boot. What can I do?

[zealous seal]

May or may not help - had a pi 4 that worked..then one day didn't... reflashed the card a bunch of times and still didn't and gave up... a year later I tried a different card and it worked.

[ripe berry]

You probably can just try a new card without waiting a year 😉

[elfin vigil]

I could try, but the card that made it not work works in my other RPi 4. Also, does anyone know if NetPi Plus works on the RPi4?

[plush wave]

Hi there I'm making a rotary encoder to operate my commands on software but I need to use the keyboard hid coding.
I've been able to code it fine but when I turn the rotary encoder it sometimes goes back on the numbers.
For example 1,2,3,2,3,4,5,4,3.
Something like that. Any ideas

[turbid rivet]

Could be mechanical bouncing on some edges, or turning the encoder faster than the edges are scanned?

[plush wave]

I think it is mechanical as I'm going slow is there away to stop this in the coding

[plush wave]

anyone else have any ideas

[umbral sable]

If it's switch bouncing, the usual approach is a "debouncing" algorithm in software, which is often as simple as waiting a few milliseconds for the value to stabilize before reporting it as real.

[whole sinew]

What are the modules of choice for using gpio/spi/i2c in python?

[plush wave]

how do i get around it debouncing is not a part of coding im used to

[umbral sable]

https://learn.adafruit.com/debouncer-library-python-circuitpython-buttons-sensors

[plush wave]

had a look and it doesn't have an example for HID

[glacial gale]

i cant get my pi to connect to the internet and my instructor cant figure it out. can someone help?

[scarlet latch]

Hey Guys, Im having a strange issue. I have always connected to a DB at the start, then querried as needed. However for some reason if I have my database connection outside my loop I am not reading in the latest data. If the connection is inside the main loop it works fine. However I dont feel like I should be creating a new connection every query.

import mariadb
import sys
from datetime import datetime, timedelta

Database Script

class furnaceDB:
    def __init__(self, db):
        self.conn = mariadb.connect(
            user="pi",
            password="Skylar2305!",
            host="localhost",
            port=3306,
            database=db
        )
        self.cur=self.conn.cursor()
        print("Sucessfully Connect To Database")

    def readSensor(self,sensor, datetime):
        sql = ("""SELECT * FROM garage WHERE sensor = %s AND time > %s""")
        data = (sensor,datetime)
        self.cur.execute(sql, data)
        results = self.cur.fetchall()
        return results

Control Script

while True:

    currentTime = datetime.now()
    windowTime = timedelta(minutes = 5)
    checkTime = currentTime - windowTime

    #Connect To Database
    database = furnaceDB("furnace")  #@@@ This is the spot that If I move outside the Loop I get old data
    setpoint = database.readSetpoint()
    results = database.readSensor("garage1", checkTime)

    if len(results) == 5 or len(results) == 4: # Make sure we read 4 or 5 datapoints at least 
        tempBuffer = 0.0
        for result in results:
            tempBuffer = result[1] + tempBuffer

        avgTemp = tempBuffer/len(results)
        shutdownError = False
        print(f"Setpoint: {setpoint}  5 Min Temp: {avgTemp}, Read Time {currentTime}")

    else:
        shutdownError = True 
        print(f"Incorrect Amount Of Datapoints Available. Setpoints Read: {len(results)}")

    if shutdownError == False:
        if avgTemp < setpoint:
            print(f"Turning On Furnace")
            client.publish("garage/furnace1/control", "True")

    sleep(60)

[ripe berry]

You may need to connect directly to your router with an ethernet cable to set it up.

[glacial gale]

i fixed it. thanks 🙂

[ripe berry]

What was the solution?

[glacial gale]

Turn off my pc

[civic rune]

Is there anything special about GPIO 7 such that it would be output-high on boot?

[turbid rivet]

I believe GPIO 0-8 have pullups enabled by default, so I wouldn't be surprised if those pins all had output-high on boot.

[civic rune]

Hmmm.

[turbid rivet]

Taken from the datasheeet for a Pi 4B

[civic rune]

I'm unclear on the circuitry of this system, and I'm disinclined to sort it out since it's all being replaced, but I'm only seeing a "high" state on the circuit connected to GPIO 7

[restive jungle]

Hey can I connect my Xbox controller to my pi

[turbid rivet]

Yes. you can.

https://howchoo.com/pi/xbox-controller-raspberry-pi

[restive jungle]

Kk thx

[restive jungle]

So snool problem

[sharp timber]

Hi There, I just bought the AIY Vision kit from Google on Adafruit and can't wait to start my project. I wonder if anyone has any ideas that could help me. I have never done any computer vision or AI before, but this goal seems achievable. I want to write a python program that will take a baseline picture of my kids' bedroom from above with a clean floor, the continuously watch it and calculate the % messy by presumably subtracting the original background image from the camera image and then calculating the % of the image that is left. I will have a button to "rebaseline" and will use a servo to create an oldschool analog dial to show % messy. Any ideas on the python vision code? similar example links?

[astral echo]

Hello, I'm using PI4 with circuitpython bare metal port. I have connected an HDMI display but can't see any anything on display. Is the REPL visible on USB or HDMI?

[umbral sable]

The go-to for vision tasks like that would probably be the OpenCV library. It has Python bindings too.

[sharp timber]

Thank you. That is what I am finding online too. Others have also suggested Yolov5

[umbral sable]

My instinct would be to stick with more basic computer-vision operations rather than a full AI model for the problem as you've described it. The latter would generally require you to collect a big dataset to teach the AI what clean and messy rooms look like. "Okay, here's a photo of the kid's room at 13% messiness. Here's one at 28% messiness..."

[astral echo]

anyone has experience with Pi 4 and bare metal python?

[faint sparrow]

afaik you connect up to TX/RX pair on the RPi4 pin headers.

Just looked. It's only for debugging after modifying C source so not normal use.
Normal use on RPi4 is the USB-C cable connection.

https://learn.adafruit.com/circuitpython-on-raspberry-pi-bare-metal-no-os/installation

[solar phoenix]

Hi, I have a problem with my Raspberry Pi Pico. I downloaded CircuitPython for the first time and everything worked fine until I reconnected it. I only had one file there and the others don't show up. I tried to reinstall CircuitPython, but I still only have boot-out.txt and the lib folder and others do not appear. Does anyone know how to fix this? Thanks!

[rotund pivot]

@solar phoenix it may not a problem, you can load a code.py . But safest is to nuke the flash, then reload Circuitpython and your other files.

bottom of this page: https://learn.adafruit.com/adafruit-feather-rp2040-pico/circuitpython

(CircuitPython questions will get more traction in #help-with-circuitpython )

[astral echo]

are you using bare metal or with linux?

[solar phoenix]

Without linux

[astral echo]

I'm too using without linux but i cant see anything on my HDMI

did you edit boot.py?

[solar phoenix]

I only downloaded the CircuitPython on it, put adafruit hid in the lib folder and putted payload on it. After that it was working fine and like 10 mins later this happend.

[astral echo]

did you download .zip file from downloads page? or you used .img file?

[solar phoenix]

i used the zip

[astral echo]

i think there was a similar issue in its repo issues

[solar phoenix]

Okay thanks, i manage to nuke it and its working now

Is it bad to nuke the raspberry pi pico often?

[faint sparrow]

You won't be able to wear out the QSPI flashROM chip.

You'll lose it in a pile in the attic, damage it by overcurrent through Vcc/GND or something else way before you'll use the last cycle of the QSPI flashROM' s lifespan. ;)

[steady rose]

Raspberry Pi Pico is not the same as Raspberry Pi SBC's (like Pi 4)

just fyi, seems like two different issues

[sharp timber]

That is exactly what I want to avoid

[faint sparrow]

can i run the pico by connecting the usb to a power brick or a battery pack?

It wants up to 1.6 Amps during startup.

After that about 800 mA maybe.

Might spike up to about 1.3 A occasionally.

[turbid rivet]

I believe this is the Pico, not a Zero.

[turbid rivet]

Yes.

[faint sparrow]

KD3005D from Korad
(https://www.sra-solder.com/korad-kd3005d-precision-variable-adjustable-30v-5a-dc-linear-power-supply-digital-regulated-lab-grade)
Setup to current-limit an RPi4. That was my thought. ;)

The RPi4 would boot reliably somewhere north of 1250 mA iirc.

Then settle down to 800 mA.

An RP2040 board would draw far less.

[rotund pivot]

Some USB battery packs will turn off if not enough current is being drawn. There's a dongle for that. Or find one that doesn't.

[faint sparrow]

Figure 35 mA for the average target board at quiescence (idling in a while(-1);).

[solar phoenix]

Okay, thanks:)

[faint sparrow]

I am trying to make a clock with my Raspberry Pi Pico and i2c display. Can anyone help me code it? (python or circuit python)

[turbid rivet]

https://learn.adafruit.com/circuitpython-display-support-using-displayio/text might be a good place to start. What exactly are you stuck on?

[faint sparrow]

I really am just clueless with micropython and circuitpython. this project is due tommrow and Im freaking out

@turbid rivet

[umbral sable]

Step one would be to get some example code running on your hardware, just to make sure your wiring is sane and you understand the general flow to get code onto it. Then some example code specifically for your display, to make sure that part works. Then you can start to figure out what functions you need to create a clock, which could be simple ("12:00" text) or complex (animated analog clock face), etc.

[cunning gazelle]

I'd start by trying to draw lines and circles

[faint sparrow]

can I see some sample code of writing text

[umbral sable]

You mean like the tutorial that @turbid rivet linked a couple of messages up? 😉

[faint sparrow]

I have a feeling Im gonna need lots of help 😭

[faint sparrow]

@umbral sable the pi pico does not have a onboard screen. So I purchased an i2c screen. So the example code wont work

[umbral sable]

Do you have some different example code targeting that screen model?

[faint sparrow]

no I do not, heres the i2c I bought https://www.amazon.com/dp/B019K5X53O?ref=ppx_yo2_dt_b_product_details&th=1

[umbral sable]

Possibly a tutorial like this would be compatible with it. https://lastminuteengineers.com/i2c-lcd-arduino-tutorial/

[faint sparrow]

I dont get it

[umbral sable]

Oh, sorry, you were working in CircuitPython, not Arduino. My bad...

[faint sparrow]

yeah..

[umbral sable]

You may want to ask in #help-with-circuitpython , as I'm less familiar with the particular library you might need to use with that display. (You would probably have a friendlier situation if you bought an Adafruit display instead of a random Amazon part without an associated tutorial.)

[faint sparrow]

which display do u reccomend

[umbral sable]

There are lots, so it just depends on your requirements for size, resolution, color, whether you need text or graphics, etc. I think Adafruit has a similar 16x2 character LCD, for example.

[faint sparrow]

I just need it to be able to display time

[keen cipher]

@everyone how would I connect an 18 pin ribbon cable display to a 15 pin raspberry pi DVI display port ?

[civic rune]

Don't @ everyone

[west sierra]

So. You just jumped into every channel possible and ran an @ everyone? Let's contemplate. What did you think would happen?

[civic rune]

Fortunately it's turned off but it's still not good practice

It's like running into a room and screaming at the top of your lungs

[west sierra]

I'm not even going to say anything, because I would only incriminate myself.

[civic rune]

Which, if there's a dinosaur outside, fair play

Otherwise...

[west sierra]

Otherwise... I plead the fifth.

[rare dirge]

hi
i just instaled adafruit microphone sph0645
i was wondering if i can flash an sd card with that would run the instalation automatically without me interfacing graphicaly with it

[civic rune]

You mean flash the SD for the pi? You could make an image of your pi's drive and save it and then flash that

[last epoch]

Anyone here experienced with the pi pico and assembly for it? I'm considering getting one to experiment with the rp2040 but I'm unsure what I'll need and if it's possible to code only in assembly on it

[lost wolf]

This channel is meant more for RPi SBCs and Linux help. Try posting to #help-with-projects instead. We discourage cross-posting, but I'm telling you to do it this time so you might get better assistance.

[last epoch]

Oop, alright. Sorry for the bother-

[lost wolf]

No bother at all! Simply wanted to make sure you posted where you might get the help you're looking for.

[hard marsh]

Just a quick opinion question. I could not find a Pi HAT for 4G cellular (US) from Adafruit. Anyone have experience or reccomentations for one?

Or for a dongle type modem if you found that more effective.

[glacial gale]

So, i aparently dont know how to download on the pi

[steady rose]

download what?

[glacial gale]

Mu

Just got a pi 3 from my instructor and am trying to set it up

[steady rose]

are you trying with pip?

[glacial gale]

Yes

Copied right from mus site

[steady rose]

did you get errors?

[glacial gale]

Nvr mind. Didnt read the page. Doesnt work with pi. They have an alternate set of directions

[steady rose]

oh yah, this one, via desktop
https://codewith.mu/en/howto/1.1/install_raspberry_pi

you've got the desktop version of pi os installed?

[glacial gale]

i think so.

[steady rose]

it'll be obvious. desktop version will have the GUI.

like what is shown on that page

[glacial gale]

then yes

[steady rose]

cool. yah. try that approach. looks like it's available through the desktop software package manager.

[glacial gale]

though my instructor is teaching us through the terminal, he is also teaching the gui

anyone have the terminal code for an onscreen keyboard

[fleet quarry]

So more of a confirmation question as google isnt telling me. I am planning on using a pi 2w zero as a octopi web interface for 3d printing and I want to hook up a USB web camera to it for remote monitoring and time lapse vids. All the info I can find for a camera on the zero is turning it into a web camera itself rather than plugging one into it. I can't see why I couldn't but before spending money on that project is there any reason that wouldn't work?

I am trying to avoid the pi camera specific attachment because of both cost and distance.

[umbral sable]

That should work, yeah... the USB port is on-the-go, so it ought to be able to act as a master for a webcam.

[fleet quarry]

figured as much

thanks!

[mystic hare]

I am trying to setup a voice assistant and I got the #Adafruit Voice Bonnet for Raspberry Pi and wondering what I need to do to install drivers if anything?

website says to use the installer script but doesnt tell me where to find it at all

[mint pagoda]

@mystic hare Are you using this Learning Guide https://learn.adafruit.com/using-google-assistant-on-the-braincraft-hat

[mystic hare]

I wasnt using google but yes I did find that guide

[mint pagoda]

I have a Bonnet but have not used it. I used the BrainCraft Hat. The Hat (at least) was designed to use the Google Setup and then the Device specific setup.

[mystic hare]

I was actually able to get it all setup and working now. Well I think at least. I am using Genie with home assistant

So I know the mic and speaker work

[mint pagoda]

Good. I'm not familiar with Genie.

[mystic hare]

just figuring out how to link it and make it work properly with Home assistant now

Sadly there isnt a ton of info on it

but open source and doesnt send everything to google or amazon so hopefully i can make it work

[mint pagoda]

@mystic hare i hope you get it worked out. Perhaps someday you'll build your own AI server.

[mystic hare]

Lol probably not but maybe.

[gaunt hatch]

Does anyone know if it’s possible to code an input program with circuit python but have it run specific to a program, that way I can have the raspberry pi plugged in and not have what’s needed in focus?

[turbid rivet]

What kind of Pi, and what is plugged into what? Could you give us your desired use case, or an example of?

[gaunt hatch]

The pico

Im looking to run a script for a program I have but the only downside is, with the pico plugged in, the program has the be in screen focus since otherwise it’ll just type gibberish on anything else I have open

I was wondering if it’s possible for the pico or any other possible device to know to only input the script into the said program without it being in focus so I can work on other stuff

[turbid rivet]

Oh, I see. Unfortunately, the HID portion really only sends raw interface input data, like keystrokes or mouse clicks. If you're trying to communicate with a specific script in the background, you can consider serial communication instead of HID input. Unfortunately, there isn't a way to type to a background Word document, for instance.

[gaunt hatch]

Do you know any possible work arounds using HID input?

[turbid rivet]

I think some macropads with active window detection run some sort of program to check what window is in focus. If you employ a similar application, it may be possible to pause your input while a different window is in focus?

Not too keen on details myself, unfortunately.

[tired marsh]

what app do you want to control in the background ? can it be scripted ?

[gaunt hatch]

It's for a game LOL

Just looking to progress, while working at home

[tired marsh]

hard to tell if it would work, depends on how it's made, but I believe what you want is something running on the computer that can send keys to an app, not using a microcontroller at all

[gaunt hatch]

I wouldn't mind upgrading any hardware im currently using

I have most of the script down already, but it's just difficult figuring out how to send the inputs into a non-focused window

and I'd prefer to not using a key injecting software as well

[tired marsh]

hmmm key injection might be your only choice here

or run the target app in a virtual machine ?

(where it would be "in front" inside the VM while the VM is not)

AutoHotkey seems to be able to send keys to a window if you look at point 8 in this FAQ: https://www.reddit.com/r/AutoHotkey/comments/4f4j9k/read_this_before_posting/

[gaunt hatch]

Yea, VM might work but it'd still require the VM to be in front right?

[tired marsh]

a VM should be able to "capture" a device, so the board would be "connected to the VM" and to the VM only, whether the VM is in front or not, but I never tried it like that, it will depend on the VM software I guess

[meager vault]

Hey everyone, I have a pi zero W with the TFT joystick bonnet, running Raspberry Pi OS bullseye with armhf. I ran the install script on a fresh install (https://github.com/adafruit/Raspberry-Pi-Installer-Scripts/blob/main/adafruit-pitft.py) and it rendered the console for around half a second before going blank. What is causing this?

[inland mango]

Hi I am attempting to use the A~ Voice Bonnet but am having trouble loading the S/W, specifically "pyaudio" when I enter "sudo pip3 install pyaudio". The test using arecord just before this step in the guide worked fine. Any suggestions ?

Am running Raspbian lite

[coral viper]

I keep getting this error when trying to set up pico sdk. I got it to work once on command line and then tried it on VS code and it doesn't work on both anymore
arm-none-eabi-g++.exe: error: CMakeFiles/adc_console.dir/adc_console.c.obj: No such file or directory NMAKE : fatal error U1077: '"C:\PROGRA~2\GNU Arm Embedded Toolchain\10 2021.10\bin\arm-none-eabi-g++.exe"' : return code '0x1' Stop. NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.28.29910\bin\HostX86\x86\nmake.exe"' : return code '0x2' Stop. NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.28.29910\bin\HostX86\x86\nmake.exe"' : return code '0x2' Stop.

[opaque wagon]

Try using ninja:
https://github.com/raspberrypi/pico-examples/issues/152#issuecomment-899112918

[civic rune]

I'm following this guide: https://www.kite.com/python/answers/how-to-check-internet-connection-in-python to check for an internet connection in some code I'm writing. Does it matter the URL I use or is there a best practice for this kind of thing?

[umbral sable]

Well, often you'd just use the URL that you actually want to connect to. But if you just want a generic "am I connected" test, most people would use a relatively lightweight highly-reliable page like Google's home page.

[civic rune]

ah OK I was leaning towards Google thanks.

I'm over-doing some test code

setting up a new pi, for Wifi Country I want US right?

hmmm I want to configure my pi to connect to a public wifi connection, but I can't have a blank password field in the imager setup screen.

[civic rune]

having a weird issue with my pi. The new dialog system in the imager that allows you to setup, among other things, a username/password and wifi, IS setting up wifi but is NOT setting up a username/password. Does this seem like a bug?

[olive haven]

I didn't change the default username but I did set a password, and that worked fine for me.

[civic rune]

Didn't work for me, submitted a bug report, doing it manually instead

[olive haven]

Mine was a few weeks ago; I know they've done some updates since then

[civic rune]

annoying that my pi just rebooted and restarted the welcome process but did connect to wifi. I'm trying to get a password setup before connecting to the freakin' internet

[civic rune]

Ah! What happened?

Clicking on any of these pops up an error dialog box

[olive haven]

are you loggged in as 'pi'?

[civic rune]

It didn't ask me for a password so I must be

It died suddenly, not sure why, and this is what happened when I restarted. I'm just re-flashing the SD card for the 5th time today

[olive haven]

What'd the error dialog say?

[civic rune]

something about input/output error

wouldn't let me even run cmd line stuff so I'm just nuking it. I backed up everything of value a while back

I never can figure this out, when is it necessary to use sudo when installing stuff? Should I be using sudo pip3 install Adafruit-Blinka?

[west sierra]

I recommend using either --user or something like Poetry or Pipenv.

Installing system-wide is seldom a good idea.

[civic rune]

what does that call look like? I'm just using the command line

[west sierra]

One sec.

[civic rune]

thx

[west sierra]

poetry is easiest, it's a little bulky, but super intuitive

(not bulky for the code, just the tool itself)

https://python-poetry.org/

[civic rune]

ah I'm using this pi to do one thing and one thing only, so that's OK

let me see if this pi has the oomph to open a webpage lol, have had bad luck in the past

[west sierra]

curl -sSL https://install.python-poetry.org | python3 -

[civic rune]

oooh

so what does each part of that do? curl is something to do with the web right?

[west sierra]

this will help you manage dependencies as well

the bottom part is the one you'd run in the Pi shell to install Poetry

the top URL was to their homepage, if you want to verify the SHA256 sums or anything, you can check there. If you trust some random Internet stranger like me to send you command line things, just run the curl thing. It'll install it.

🙂

https://python-poetry.org/docs/master/#installing-with-the-official-installer

[civic rune]

what is "poetry's bin directory"? The location of the binary file for Poetry?

[west sierra]

people have all kinds of opinions about what tool is best, and I have probably used all of them, but, Poetry is the least complicated, and the hardest to F up.

[west sierra]

It should have told you when you installed?

[civic rune]

It said where that is, but not what that is

to your recollection, should it just be hanging out saying it's installing without any kind of install bar?

[west sierra]

yes

it'll take a minute on a Pi

[civic rune]

that's fine, I'm hourly

[west sierra]

😄

[civic rune]

ok so I've got Poetry installed. What does it do?

manages packages?

[west sierra]

Once installed, it's pretty sweet. It's not the most optimized and fastest and whatever, but it's dead simple, saves you all kinds of hassle when you try to run one or more Python things.

Among other things, yes.

[civic rune]

hmmm, it says to test with

poetry --version

[west sierra]

It'll use whatever Python versions you have installed

[civic rune]

but that gives me
bash: poetry: command not found

[west sierra]

ok, so read above that

it should have printed out some instructions

[civic rune]

ahh I see

what does $PATH mean?

[west sierra]

just try this, can you open up another shell on the Pi?

[civic rune]

yyup

[west sierra]

do that, then type in poetry --version

[civic rune]

same deal

I need to find my shell configuration file

[west sierra]

OK, so then there's a line for what to put in $PATH, right?

Shell config file is ~/.bashrc

just stick that line in there

paste it in here first to make sure you got the right one

[civic rune]

Here's what it says:

[west sierra]

(I have a dotfiles script that automatically installs Poetry for me when I install an OS, so I don't even remember what the installer tells you)

so do this

[civic rune]

It's not clear what PATH should be

[west sierra]

I got you

lemme type it out

[civic rune]

thx

[west sierra]

$ nano ~/.bashrc

that should open an editor

in that editor, page down to the bottom of the file

add this:

PATH="$HOME/.local/bin:$PATH"

then start a new terminal

should allow you to run poetry

[civic rune]

Under here?

Where my cursor is?

[west sierra]

yup, down there at the bottom

CTRL+X saves

[civic rune]

So this is PATH/environment vars right?

[west sierra]

yup

just telling your shell where to look for the script itself

[civic rune]

what does $PATH mean? And I don't seen Poetry mentioned anywhere, how does it know to enable Poetry?

[west sierra]

poetry was installed in the ~/.local/bin directory

Do this on the console:

echo "$PATH"

you can also type in env and hit enter to print out all vars

[civic rune]

there we go!

[west sierra]

💥

[civic rune]

ok so now I can use Poetry to install Blinka?

[west sierra]

yup

[civic rune]

So Thonny doesn't have a grabbable top bar (can't think of the word for it). Any advice?

[west sierra]

@civic rune Also, suggestion to use Poetry was not good for Thonny. You said you were on the command line. But. You weren't. So, I figured out how to do it in Thonny. Pretty neat little app.

Got a video of it. Gonna upload.

[civic rune]

Thonny is a neat little app? Or your solution? Thanks for all your help!

[west sierra]

Thonny is neat.

[civic rune]

Ah yeah. It's low frills

[west sierra]

But with this solution, it's even better.

There's a bit there where it was installing packages and took forever so I looked at my phone, so feel free to skip ahead

[ripe pike]

Anyone testing the new bootloader? Question about it: can you select non-standard images (i.e. those not provided by RPi)?

[turbid rivet]

Based on ArsTechnica (https://arstechnica.com/gadgets/2022/02/raspberry-pi-bootloader-enables-os-installs-with-no-separate-pc-required/), you can only select images that are available from the Raspberry Pi Imager (at this time).

[ripe pike]

Ah perfect ty - that's the info I was looking for

[glacial gale]

so i just cracked the housing on this component. i hope it will be fine. it looks like its funcyional parts are all intact, just a broken housing. i think its some kind of coil

[ruby night]

seems to be a fairly common issue https://community.element14.com/products/raspberry-pi/f/forum/31207/there-is-a-broken-chip-on-my-rpi3-motherboard-labeled-4r7-i-just-bought-it-and-it-broke-while-trying-to-install-it-inside-the-case-will-the-board-still-work-with-that-chip-broken-can-i-cover-it-with-epoxy

[civic rune]

Having a weird issue

Sometimes my pi will lose the ability to click important buttons

This seems to happen when I plug in some I2C breakout boards that use 3.3V

I can't even open a terminal to shut down, I have to pull the power cable

[pliant pebble]

What model?

[civic rune]

AW9523

[pliant pebble]

Mmm, yeah

[civic rune]

yeah?

Pi 3 A+

[pliant pebble]

Are you sure they're 3.3v?

[civic rune]

yup

because the I2C bus is pulled up to VCC. If VCC were greater than 3.3V it would damage most microcontrollers

chip datasheet says that 3.3 is acceptable

[pliant pebble]

Did you do any soldering on the board??

[civic rune]

nope

just stemma QT cables

[pliant pebble]

I'll try one on mine - I'm pretty sure I have one. I'll get back to you

[civic rune]

thanks!

[pliant pebble]

NP

[civic rune]

make sure you have the pi plugged in and running before you power on/connect the '9523

to replicate the issue

[civic rune]

running into another issue, this time with instantiating I2C using board.I2C()
I run that and I get, after a long stack trace:

ValueError: No Hardware I2C on (scl,sda) = (3,2)
Valid I2C ports: ((1,3,2),(0,1,0))

[tired marsh]

isn't that when you need to enable I2C in raspi-config ?

[civic rune]

I would have thought that installing blinka would do it, I swear it has in the past, but I don't recall clearly

hey that worked!

[tired marsh]

I believe the adafruit install script does it in theory, not pip install

[civic rune]

Huh

I must have used the adafruit script to do it in the past? Don't recall. Thanks for the tip

[ruby night]

This guide walks you through it https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/installing-circuitpython-on-raspberry-pi

[civic rune]

thx, I have kind of a weird setup on this pi. Mr. T is trying to teach my some software and it's led us down some interesting paths

[civic rune]

I'm following this guide https://www.kite.com/python/answers/how-to-check-internet-connection-in-python but I get an error when I import requests

ah I guess it's just not a default lib in python

is the first library that shows up in my package manager, requests Python HTTP for Humans, the one I'm looking for?

[olive haven]

that's it

[civic rune]

cool thanks

I'm overdoing some test code because I want to learn things

hmm is there a way for my python program to tell if it was run from 1) the REPL 2)By clicking run in an IDE 3) from a command line or 4) automatically by say a process?

I want to be writing to a file, but I don't necessarily want the file to be overwritten on subsequent runs, so I was thinking a popup box that allows you to enter a new filename? I think I may be over thinking this since I'm writing test code that only I will ever run so I can just manually change the filename to be used in the code

if I want to write a text file, do I do filename = "somename.txt"?

[olive haven]

You could make the filename a command line argument.

[civic rune]

I was thinking of that

[olive haven]

I didn't understand your next question about writing a text file. You mean as opposed to a binary file?

[obtuse ermine]

Hey guys im trying to find a pinout for the raspberry pi 4 b 3.5mm av jack and I cant seem to find one anywhere. Does anyone know an easy way to tell the channel pads apart?

I want to hard solder an amp onto those pads for 2 4 ohm speakers lol

[hollow socket]

put the plug in and test it with a continuity tester

[low vessel]

I recently made the switch on my pi4 8gb to 64 bit rasp os and after reinstalling zsh, tmux, docker and some themes like powerlevel10k and ohmyzsh my pi idles at 1800 for the cpu frequency with dips to 600 every so often. Is that good for the pi to run at max frequency the majority of the time. At idle utilization is 3% and I’m not getting any extra heat. I have fresh installed 64 but twice now and it still does the same thing

[humble marsh]

https://www.raspberrypi-spy.co.uk/2014/07/raspberry-pi-model-b-3-5mm-audiovideo-jack/ has the plug wiring but not the pads. https://forums.raspberrypi.com would be a good place to search, and to ask further.

doing continuity tests would be good too, as Keri says

[obtuse ermine]

Yeah I'll just fluke it out to make sure. I don't have an extra 3.5 plug to mess with lol

[haughty hornet]

should I ask here for issues with raspberry pico and circuitpython?

[lost wolf]

Nope! Please ask in #help-with-circuitpython

You'll get better assistance!

[haughty hornet]

okay thanks!

[shadow prism]

For those that bought fingerprint scanners for RPis, which ones are reliable in your experience?

[lost stirrup]

Hey, can someone kindly explain to me how clock divider in PIO works? I want to set a clock 5Hz in 74HC595, but I couldn't 😦

[civic rune]

I definitely set up a username/PW on my pi, but when I turn it on, I'm not prompted for one. Is this normal behavior?

[simple flame]

most likely an option turned on in raspi-config

[civic rune]

ah thx

[civic rune]

what is likely to be more accurate?

1. calls to pygame.mixer.music.get_pos()
2. time.monotonic() - init where init is a time.monotonic() call right after the song starts

[neat flint]

@civic rune If you have time.monotonic_ns() on your board I'd suggest using it instead if you need accuracy.

Unrelated, but I am sad the RPi foundation didn't take the Zero 2 W as an opportunity to use USB C.

[civic rune]

I don't need super duper accuracy, a few ms off is fine, I was just curious for when I do need accuracy

[hardy plaza]

You won’t get guaranteed accuracy both due to Python and due to Linux on the Pi since Python is getting time-shared and is affected by system load

If you want accuracy you probably should move to an MCU

And note that RTCs are accurate over days and weeks but not at the micro or millisecond level

[civic rune]

Oops, thought I was in robotics

It's not over a long period of time. I expect the drift in the clock to be <1ms

[hardy plaza]

Then you can’t do that on a Pi

[civic rune]

Can't do time.monotonic()?

hmmm

I can be off by a few ms and it doesn't matter

but the code I'm profiling must be run on a pi

[hardy plaza]

Oh, you'll get a value but it won't be accurate at millisecond accuracy. I'd suggest simply trying things out and noting that the values returned by any time function on Linux on a Pi won't be accurate at high resolution. RTCs over longer periods can have seconds per month, etc. but the code that delivers your function is sharing the OS and there's no backing clock except for the system clock.

That said, it may very well be accurate enough for your (and most people's) purposes.

I ended up hooking an MCU to my Pi to use as a reference clock since my Pi gets under heavy load at times.

[civic rune]

Yeah I can be like 30 ms off and it won't make an appreciable difference

[hardy plaza]

Then you're probably fine. I am using mine for a PID controller where each call must be quite accurate otherwise it can get into bad feedback loops. Actually, four PID controllers.

[rotund pivot]

https://docs.python.org/3/library/time.html#time.perf_counter can be handy

and maybe run it a number of times to smooth out system variation

[hardy plaza]

Yes, but no more immune to clock fluctuations than any Python time function. If one's requirement is milli- or microsecond accuracy in Python on Linux, you need to provide a hardware clock that isn't affected by load or time-sharing.

Basically what I'm saying is that you need a hardware clock with the required performance, not a software clock.

[rotund pivot]

yes, though a larger sample size can help

an alternative could be triggering something off-board that can measure more accurately

[hardy plaza]

Over multiple calls, yes, but if we call "resolution" the ability for a single call to be accurate at the micro- or millisecond level, it must be a hardware clock. As to an external clock, I mentioned that I'm myself using the hardware clock of an external MCU connected to my Pi as my source of a 20ms pulse. I'm getting accuracy (resolution) there of about 1-2%. And any MCU will do, clearly the higher clock speed the better. I'm using both a TinyPICO and a QT Py RP2040 for this.

If I try to get a 20ms pulse from the Pi itself (in Python) that clock can vary from 20ms to 40ms or more etc. depending on load.

[rotund pivot]

Makes sense. I only expect my Pi(s) to be fast, not precise.

[civic rune]

If you want true precision, Python is also not the best bet

[rotund pivot]

I've seen SAMDs drift up to a second per minute 😦 Espressif are much tighter. Haven't measured RP2040.

[hardy plaza]

I’m not sure how much of a market there’d be but I’d love it if Adafruit or Pimoroni or somebody would sell a high resolution microsecond accurate I2C clock board. Nobody does AFAIK 😔

It wouldn’t even need to be setable really or even provide milliseconds since the epoch like in Java, but that’d be handy

Even just a relative 1uS pulse would be welcome

[umbral sable]

Would you want like a pulse-per-second output for the high resolution? I2C isn't fast enough to do microseconds itself.

[hardy plaza]

Any coms on Python on Linux is prone to that issue, but if I called the board I’d always get a 1uS accurate number (absolute or relative) subject to the constraints of the cons protocol. I’m not sure how else it could be connected to the Pi...

s;cons;coms

[umbral sable]

GPS does it with a separate PPS output signal, where the edge is exactly on a second boundary, even though the UART stream is much slower.

[hardy plaza]

Yeah, like an RTC GOS is very accurate over longer periods but low resolution

I hate typing in a phone 😑

s;GOS;GPS of course 😑

(I’m lying in my hammock in my front porch so I really shouldn’t complain) ☺️

[warm remnant]

what is the ground symbol on the back of the rasberry pi mean exactly? cant find it anywhere

well i assume its ground

[civic rune]

I wouldn't necessarily assume that

[warm remnant]

i should mention i dont expect it to to be your typical ground if anything tho

[wraith grove]

Eddy, the E that eats capacitors!

[civic rune]

I don't think there's more than 1 ground on the pi

Maybe isolate the image and do an image search?

[umbral sable]

Seems to be a TELEC certification symbol, which is the Japanese equivalent of the FCC. https://www.gmcompliance.com/japan-telec-certification-service/

[civic rune]

I thought some regulatory body

[mossy verge]

Anybody have experience in Plymouth theme creation? I've been fiddling with it for days now, and am at the point where I am just ready to pay someone to convert a MP4 into a usable Plymouth theme >< I found some OSS software to do it, but spent a day on EOL'd Python2 libraries before giving up.

[tidal lance]

This may have been asked before, but could I use the Raspberry Pi 400 and use the CYBERDECK HAT and a screen as the main screen output instead of a connected HDMI?

[steady rose]

yes

other than the STEMMA connectors, it's really just a GPIO adapter - not much going on

so can just follow same TFT guides that show how to set that up

product page list various TFTs:
https://www.adafruit.com/product/4863

so just follow those, and then to their learn guides, and follow that

other than this one potential quirk:
https://learn.adafruit.com/cyberdeck-bonnet-and-hat/fixing-pin-conflicts

there's nothing CYBERDECK specific to deal with

[tidal lance]

Awesome, thank you!!!

[thin wagon]

Can I somehow debug a .net f program running on armv6 ( pi zero , mono )?
Im having an issue thats arm specific as it works perfectly on my windows machine.

[hardy plaza]

QEMU may be the tool you're looking for: https://www.qemu.org/docs/master/system/target-arm.html
Though perhaps I'm a bit confused about what you're trying to accomplish, so here's another angle:
https://developer.arm.com/tools-and-software/server-and-hpc/compile/arm-instruction-emulator

[thin wagon]

Yeah, no I need to be able to debug c# (.net framework) code running on pi zero w, if accomplishable by any means?

[zealous seal]

https://docs.microsoft.com/en-us/dotnet/iot/debugging?tabs=self-contained&pivots=vscode

[thin wagon]

This is with .NET core though (speculating since console has a command dotnet publish) ?
Pi zero doesnt support it since its arm6

[zealous seal]

Not sure - I haven't tried it. If it is possible - something like this is probably the way.

[thin wagon]

Yeah with .NET core, my program is running on .netframework aka mono on linux

[zealous seal]

hrmmm, it does say you can choose .net or .net core. Its probably worth a try with .net. If you're using the visual studio instructions I don't think you even need to install anything on the pi

[thin wagon]

I'm using rider on my main pc :/

Doesnt vs code require like 30 extensions to work with c#

[zealous seal]

Yeah, it also runs directly on the pi (its so slow on an original zero and 3 b+ or less though). I don't think you need any extensions if you use the free full Visual Studio - but thats its own hassle.

Doesn't seem to be a lot of literature about debugging it with other things. Worst case - you could just fall back to logging

[solemn briar]

Anyone have a favorite USB webcam? Decent resolution… and extremely “plug and play” friendly? Ideally NOT requiring a USB power hub.. this will be on a RP400

[lost stirrup]

Hello, does anyone have experiences with PIO RP2040? I have read its datasheet and it shown there about period of cycle (page 332), I am wondering why this .program squarewave has 4 cycles instead 5? Does [1] not count as a cylce? Or am I missing something? Thank you!

​​c .program squarewave set pindirs, 1 ; Set pin to output again: set pins, 1 [1] ; Drive pin high and then delay for one cycle set pins, 0 ; Drive pin low jmp again ; Set PC to label again ​​

[umbral sable]

I'm not that familiar with the PIO, but I'd assume that the cycles would be:1: drive pin high 2: extra delay on that command 3: drive pin low 4: jump statementSo it ends up with 2 cycles high and 2 cycles low.

[lost stirrup]

Yes I think the same way too, this [1] wont count as 1 cycle, but I need like a theoretical reason behind it 😅 thank you for the answer!

[scarlet latch]

Hey guys i purchased the smartPI touch pro from adafruit. I have to say this is a wonderful addition. Excellent instructions. Very happy with this!

I did have a question. I installed an onscreen keyboard thats pinned to the task bar. Very nice. But running scripts in a cmd window I cant seem to use ctrl d to terminate them. Any suggestions? Mostly looking to end and restart a script after sending changes from my pc

[faint sparrow]

You can probably trap a Control+D.

Your terminal would be configured to pass it to the far end of the connection (may not want to by default).

I don't know what a 'cmd window' would be in this context.

In unix maybe stty could help.

I use it to catch one signal that gets passed through if I do not do it.

 $ stty -isig
 $ ssh -p 987 this.host.com

[-]isig
  enable interrupt, quit, and suspend special characters

I was keyboard-flubbing which disconnected me from their server, and the above helped that.

(in a live keyboard telnet-like session)

[humble marsh]

I have a couple of Logitech C920's. There are several other models in this series. They work fine on Linux and Windows. They have a standard interface. They were scarce for a long time but are now generally available again.

[civic rune]

I'm looking for the "best" way to upgrade python on my Pi to the latest version. This (https://stackoverflow.com/questions/64718274/how-to-update-python-in-raspberry-pi) accepted answer has an intermediate step where you run sudo apt-get install -y build-essential tk-dev libncurses5-dev libncursesw5-dev libreadline6-dev libdb5.3-dev libgdbm-dev libsqlite3-dev libssl-dev libbz2-dev libexpat1-dev liblzma-dev zlib1g-dev libffi-dev
and claims it makes managing dependencies much easier. I don't like running random code that I don't understand. Does anyone know off the top of their head what all these installs are?

[faint sparrow]

I'd be all about sudo apt-get -d install <foo> and then drop the -d switch on a repeat iteration.

precede with sudo apt-get update

You can also sudo apt-get upgrade which iirc is fairly global.

There's a dist-upgrade (or similar spelling) target as well.

[civic rune]

I just did the sudo apt-get update and sudo apt-get upgrade and dist-upgrade on thursday

[faint sparrow]

Then it ought to be current I'd suggest.

When you do try to upgrade python it'll most likely tell you you already are on the lastest version.

[civic rune]

I have 3.9, latest is 3.10

[faint sparrow]

I don't remember if apt-get requires you to solve dependencies by yourself (it might!)

You can look at package files to check on that.

[civic rune]

I probably don't need 3.10 but all the docs for the libraries I want to use are in 3.10

ooooh

I can change the version

[faint sparrow]

/var/lib/apt/lists has the resources.

[civic rune]

thx

[grand sparrow]

hello, can someone please tell me how to write a nodejs script to ping each second my bmp280 sensor that I hooked up to my raspberry pi?

I connected like this https://i.imgur.com/KtIUzb3.jpg

[faint sparrow]

@civic rune for regular Debian I usually:
https://packages.debian.org/bullseye/python3

[civic rune]

what would be a good tool to create a CSV manually on a pi?

[civic rune]

cool thx

[faint sparrow]

here's debian's 3.10 version:

http://http.us.debian.org/debian/pool/main/p/python3.10/

if it says 'pool' in the path you're in the right place (for Debian).

I have downloaded directly from these directories and installed the .deb manually, and resolved dependencies myself.

Can be a project. ;)

[civic rune]

I don't actually need any features in 3.10, I just mistakenly thought I couldn't access the 3.9 docs

[humble marsh]

print statements, or a spreadsheet program like LibreOffice Calc"

[civic rune]

ooh ok thanks

I'll see how to install that from the command line, it's a 3 A+ so it struggles to do much of any web browsing

[humble marsh]

you mean Google Sheets is difficult, I guess

[civic rune]

Indeed

Even going to a website is hard

[civic rune]

I can't tell if libreoffice actually installed or not, at the very end of the process a fetch failed, and I can't find Libre Office anywhere in my pi.

The error message is too long to type out and too long to take a picture

[civic rune]

Every time I think "I'll just do some simple web browsing on my pi, can't hurt right?", I get burned. Every time.

[grand sparrow]

hello can someone please can help me regarding bmp280 sensor

when I run i2cdetect -y 1 it shows me an address i2c on 76

and then I put this code, but it doesnt work:

const bme280 = require('bme280');

bme280.open({i2cAddress: 0x76}).then(async sensor => {
  console.log(await sensor.read());
  await sensor.close();
}).catch(console.log);

this is nodejs script

[inland mango]

Any suggestions for setting up Rhasspy on a Pi 4 / Voice Bonnet pair ?

Running Raspi Lite (32bit).. The bonnet works..

[queen gull]

I have a question about RPI and neopixels. So it's about the brightness. I mean to me there is a good variation of the brightness from 1 to 2 but to me 128 to 255 they all look the same. Is it normal I am missing something. Thanks!!!

[faint sparrow]

;)

You can measure the total current in the strip.

Maybe use a 'lux' meter.

candlepowerforums is the place where they ask how bright a light is

[umbral sable]

That's quite normal. The PWM value controls the linear amount of current and light, but the human eye perceives "brightness" very non-linearly, since we have to go from moonlight to sunlight across many orders of magnitude.

[queen gull]

Ok so I'll try to work around the issue then in code. Thanks there are no 10 bits strip for 1024 variation ? 😉

[umbral sable]

Not in the smart-LED world that I know of. There are some standalone LED controllers with 16-bit PWM on top some analog current control, though.

[zealous seal]

You can probably apply a logarithmic curve to your adjustment parameter to make it feel linear

[umbral sable]

"Gamma correction" is a good term to research for that.

[civic rune]

Anyone have a good text editor for the pi that isn't Nano? I am looking into Sublime Text to see if it will run OK on my machine

[steady rose]

for what main purpose? quick and easy edits of a text file? or code editting with syntax highlighting, etc.?

[civic rune]

I'd like to be able to some coding with it yeah

[steady rose]

check out vs code also:
https://code.visualstudio.com/docs/setup/raspberry-pi

[civic rune]

ah well, sublime text doesn't work on my pi it turns out

thanks I'll check that out

Shoot, it runs real slow, it seems it's not officially supported. I'll see about other options. I need the absolute basics when it comes to syntax highlighting

[steady rose]

did you try geany? i think that's preinstalled maybe?

[civic rune]

Geany seems OK, I was just hoping to duplicate a workflow on my normal PC. It's not a big deal

[steady rose]

i think you're seeing the general issue

fancier = takes more power

[civic rune]

yup

Notepad++ is not super fancy, but doesn't seem to exist for linux at all

and if I don't have the absolute weakest pi available, it's close

[slate pulsar]

Hi, i have been watching at this hat: https://shop.pimoroni.com/products/adafruit-1-3-color-tft-bonnet-for-raspberry-pi-240x240-tft-joystick-add-on. and I was wandering, could use it with retropie on a raspberry pi zero?

[turbid rivet]

Yes to Pi zero. Retropie doesn't recommend it, but I believe there are ways to make it work?

[slate pulsar]

so If I install the driver it should display raspbian or retropie?

[turbid rivet]

Not sure. I think people have had to use some pretty hacky workarounds to get it to display any kind of desktop.

[slate pulsar]

do you recommend any hat to create a handheld emulator?

[tawdry sigil]

Hey y'all got a beginner question here. So I am powering my raspberry pi zero w 2 via the gpio pins. I have a simple switch that allows me to turn on and off the pi. This switch is rated at 3A DC but I can't seem to be able to power the pi with it. Powering the pi works fine when it doesn't run through the switch. Any idea on what I could do here? This is my circuit:

[civic rune]

do you have a DMM?

[tawdry sigil]

yeah it never goes over 1A though when it isn't using the switch

[civic rune]

I was going to suggest testing continuity between the pins you're trying to pass power through, while the in the position you intend to be the "on" position.

I'm not sure about the pi zero but note that for the other pis, suddenly cutting power to it is usually advised against

I'm following the instructions here https://www.geany.org/download/themes/ but I don't see a directory ~/.config

ah there it is

[tawdry sigil]

yep I have continuity

[faint sparrow]

~/.config/geany/filedefs/filetypes.common

Try geany with and without that file present.

[civic rune]

I might be crazy, but I think that the password I set up for my pi at first boot just straight up didn't stick....

Is that possible?

Unrelated, but I'm getting connection refused when I try to ssh into my pi from my windows machine:

C:\Users\MyName> ssh pi@MyPiIPAddress

figured out I should be using wlan0 and no lo, but now I get connection timed out

[civic rune]

I opened a file with Nano and then somehow closed it without closing it. Now when try to open it again I get
File TheFile is being edited by root open anyways?
How can I fix this?

[umbral sable]

Chances are the previous instance of Nano is still running in the background somewhere. You could try to re-foreground it, or kill the process.

[civic rune]

what does fore-grounding it look like?

or killing it for that matter

or rather how do I find a pid?

[tired marsh]

look in top or ps

[civic rune]

hmm

[shadow prism]

Situation: I bought a USB dongle that allows me to power the Raspberry Pi Zero over a USB-A port. Here: https://www.amazon.com/iUniker-Expansion-Breakout-Raspberry-Inserted/dp/B07NKNBZYG/ref=sr_1_6?keywords=raspberry+pi+zero+2+w+usb+dongle&qid=1643130449&sprefix=raspberry+pi+zero+2+w+usb%2Caps%2C83&sr=8-6
I followed the instructions to set up SSH via USB, yet I cannot get access on SSH on neither Linux nor Windows.

[tired marsh]

I usually use ps aux | grep something

[civic rune]

hmmmm kill Operation not permitted

[tired marsh]

sudo it, it's a root process

[civic rune]

ahh

hmmm

still says the file is being edited

[tired marsh]

might be some lock file ?

[civic rune]

I'll try closing the command window and re opening

that did it lol

well I learned something

[tired marsh]

oh well, close window(s) and open it back up fixed it again 😄

[civic rune]

turn it off and on again! always

[civic rune]

Has anyone used the RPI Imager and noticed that it doesn't actually set a password?

[olive haven]

Which version of Imager are you using?

[civic rune]

the absolute latest AFAIK

ah it sayts 1.7 but I updated to 1.9. Let me try again

nevermind, 1.7.1 is the latest, I was thinking of some other software

Yup, just re-tried it and it simply didn't work

Also the password setup procedure doesn't actually make a password stick. When I go to raspi-config and click Change Password it simply prompts me to enter a new password, and doesn't require the password I just set first

[olive haven]

which image did you set up?

[civic rune]

the default basic one at the top

[olive haven]

I'm trying it now; I'll let you know how it turns out.

[civic rune]

Cool, thanks!

[olive haven]

(I've had this work before, with a previous Imager)

[olive haven]

Well, it worked again for me -- 1.7.1, default image, changed hostname, pi's password, ssh, wifi; ssh [e-mail]'

accepted the password I set

Were you changing the password from the gear icon in Imager (which is what I did), or from raspi-config?