general-chat

[latent sage]

like i said im new to all of this

and i just bought it off adafruit

[vestal pier]

how did you charge the battery?

[latent sage]

lipo charger

it fit and on google it said it works

[vestal pier]

do you have a multimeter?

[latent sage]

no

have u done this build before?

[vestal pier]

nope, just first thing to check is whether you battery is actually at charge and supplying ~3.7V

[latent sage]

oh ok

[vestal pier]

if you plug in the USB, does it work then?

[latent sage]

i downloaded the code from adafruits build website and i did everything right

but idk what the yellow light means

[vestal pier]

well, the board is getting power

do you see that light when the battery is plugged in?

[latent sage]

no

when i first put on the battery it did flicker another light

it went from green to red

[vestal pier]

ok, you might have to wait for someone who has done that build then to offer more help

[latent sage]

that light i’m pointing at

[latent sage]

ive been trying to find people who have but no luck so far

i even tried emailing john park abt it since he made it

but no answer either

[vestal pier]

yeah, this looks like it might be a challenging project for a first try, do you have any experience with serial communication and/or python programming?

[latent sage]

no sir

[latent sage]

so for a update i got the wires fixed

but when i boot up the screen its just blank

grey like

and i already dropped the code fron the guide

[shadow siren]

@latent sage The light you are pointing to is the NeoPixel LED. The other two lights by the USB are charge/power, the green and status, and the orange one; I am judging colours by that purple-looking screenshot.

@latent sage Here is the same board, Feather RP20240 (Pink Version) charging a battery as seen by the orange charging LED, with a display and all sitting on the same expansion board.

[edgy plaza]

Chaaatttt im so happy

i've never programmed anything in my life before this

but the brains of the electronics now work

The servoes are moving and the camera turns on and off

its still super janky and needs a lot of work before i put it in the helmet

but it totes work!!!

now i just need to put all that and more into this and fix some bugsssss and code more stufffff and get a new camera modulleeeee, and print some housingssssss

[outer blaze]

I've got a bad spot on my memento lens, are there replacements? I'm also wondering if there's anything available to protect the lens

I didn't see anything on adafruits website, but found something similar on AliExpress ov5640. I can't find anything I could use to cover the lens though unless I go with one of the manual focus lenses...

[charred lintel]

You can replace the whole camera https://www.adafruit.com/product/5840

[outer blaze]

Not sure how I missed that, thank you

[fair summit]

How did you get the bad spot? Note that the camera ships with a peel-off plastic cover, if you have not removed that yet.

[umbral phoenix]

Somewhere I received a couple of 7-pin stacking headers., nice edges, not hand-cut. I think they must have come with a QT Py BFF (but they don't come with most BFFs)? I can't find them in the store. I found them on , but Adafruit out to sell 7-position female headers for the QT Py / BFF ecosystem. There are equivalent headers in the store for Feather, Itsy Bitsy, Pico, and Metro (Uno).

[night crescent]

WE ARE LIVE! Desk of Ladyada - BQ25185 pt 2, DVI HSTX, LPS28, and CP2105 https://youtu.be/488quIh8Pis

Two BQ25185 boards were designed: a LiPo charger and a 3.3V buck output variant. The corrected HSTX to DVI converter boards were tested and ordered. Revisited the LPS28 breakout project and found a dual-UART USB chip (CP2105). Locating an ultra-thin RG-174 coax cable.

[fair summit]

The only BFF I see that doesn't ship with just plain pin headers is this: https://www.adafruit.com/product/5882

Are they the tall kind of stacking headers?

[umbral phoenix]

Yes, the tall, long-pinned stacking headers. I'm not sure where else I would have gotten them.

[fair summit]

i am at a loss to find anything like that. are they smooth on both ends, not cut and sanded?

[umbral phoenix]

They are clean, definitely manufactured as 7-position. Thanks for checking. I can get them on Digikey, but it would be nice for Adafruit to offer kits like for the other board systems.

I have a lot of BFFs, but haven't done much with them yet. There are BFFs for which there is no Feather equivalent (e.g., I2S), so now I'm making a hand-wired Feather-to-BFF adapter (not a PCB) using a cut-down perma-proto.

[grim ridge]

yall i've been struggling with soldering for so long and i finally just realized it's because i was missing the magic ingredient of flux 🤦‍♂️

i would always just use flux core solder but that doesn't really help with fixing things and rework, or touching the same solder point a bunch of times in diy scenarios

also, i'm completely shocked at how good flux + desoldering wick works.

[shadow siren]

Just watch out the fingers can get toasty when holding the copper braid desoldering wick.

[grim ridge]

yeah it gets hot super fast! i've been holding it by the spool assuming it was heat proof but it has metled a bit in places so i might switch to cutting off a piece and holding it with ceramic tip tweezers

[shadow siren]

Just shows how fast heat travels through a copper conductor

[grim ridge]

i also realized (since getting the flux) that i've been soldering at about 100C too hot 🤦‍♂️ at 450C trying to compensate for the solder not melting easily

[whole jacinth]

wick heating up quickly just means you’re using enough flux for good heat transfer

[shadow siren]

You will two temps one for leader 60/40 solder and another for lead free

[grim ridge]

lead lowers the melting point, right?

[shadow siren]

I think so I would have to check my station, it has the ability two set 3 presets and I think I have preset set 1 set to about 275c

[grim ridge]

whoa

[shadow siren]

yeah just checked 275c

[grim ridge]

275 sounds amazing, maybe i should get some leaded solder

i've been avoiding it cuz i dunno, LEAD

[shadow siren]

unless you plan to lick the solder for the lead sugar effect it is no more lethal than going outside

[grim ridge]

what about touching it all the time?

what about inhaling it?

[shadow siren]

the smoke/vapor you see is not lead its the flux inside the solder burning, a smoke extractor on the bench will keep it away from you breathing it in

[fair summit]

wash your hands afte soldering

[shadow siren]

to vaporize lead you need about 1300c

[grim ridge]

cool

[shadow siren]

yeah don't go make a snack after soldering session, wash first.

[grim ridge]

here i come, lead

why would anyone not use lead since you get to solder at such a low temp?

are there non-health related reasons to avoid it?

[fair summit]

because discarded leaded electronics is more hazardous waste than non-leaded

[shadow siren]

if a pcb with lead is dumped in the ground water can leach lead from it and contaminate the water table

[grim ridge]

thanks for all the answers!

[fair summit]

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

[shadow siren]

the funny thing is in satalites unlead solder joints form dendrites that short out connections but leaded solder does not do it.

[grim ridge]

weird, like the lead smooooths it out

[shadow siren]

its a chemistry thing and how it behaves in vacum and zero G

[whole jacinth]

pretty sure tin whiskers were a thing on Earth too

[shadow siren]

Saw a documentary on how they found out the newer satellites were dying yet older ones were not

Yes the Documentry mention that even on earth it could form dendrites

But it was more pronounced in orbit.

[fair summit]

https://en.wikipedia.org/wiki/Solder#Lead-free

[shadow siren]

If I am not mistaken there are more than one form of lead free solder, some based on silver others on antimony I think.

The lead-free I use is 0.8mm Sn-0.97Cu

[late fulcrum]

I generally use silver bearing leaded solder (62/36/2). It's expensive, but it's a joy to solder with.

[grim ridge]

what's cool about it?

[outer blaze]

It was a gift from a friend, I don't exactly know. Just two little spots I can't really clean off. I'm questioning if the autofocus is broken or if the spots are affecting it. I gotta hold the button for like 20 secs and it might take a photo

[late fulcrum]

Melts nicely, flows well, wets well, and it's euctectic, so it freezes all at once, without an intermediate phase that can lead to cold joints. It also makes visually attractive, shiny, strong joints.

[fair summit]

do you mean that it was used when you got it from the friend? Have you updated to the latest CircuitPython and libraries?

It's the MEMENTO, right?

[leaden marten]

I'm going to be in NY for work in about a week., Is the new space in Industry City open to visitors?

[fair summit]

nope, no tours or will-call, sorrry

[quartz stump]

Scanning for where to ask for Webone help....

Well if anyone comes by, I can't figure out how to actually get it to execute on macos terminal. I do exactly what the wiki says, and nothing happens.

[quartz stump]

There is not a single mention of webone in this entire server I feel I may be in the wrong place.

Figured it out, am genius. the present wiki article doesn't (an older one does) mention this: $ dotnet webone.dll (alternative way)

That worked for me. Please update the present macos instructions to add that.
(also this only works for an older version hmm.)

[outer blaze]

Yeah, I've updated it and it's the memento. I thought maybe it sat out of its case for a while and got dust on the lens, but I can't get it off. I'm guessing it's trying to autofocus to the bad spots and failing. New camera module is cheap so I'll try it

I ordered some round protection glass, I'm going to glue it to the opening and put something in a ring around the camera between the 2 boards.

[fair summit]

and there's no plastic film covering it, right?

there's a little pull tab on the film

https://learn.adafruit.com/adafruit-memento-camera-board?view=all#ov5640-camera-module-3161900

[fair summit]

To quote from the Python on Microcontrollers newsletter:

A quick reminder that Adafruit doesn’t have a store or tours, they’re just making cool products in their factory that you order online.

[ebon dew]

I've spent a couple weeks in a deep dark hole called Kryptos.

[ebon dew]

and happy to say I’ve reverse engineered at least part of the encryption technique used for K4. That’s something that hasn’t been done before, at least not publicly to my knowledge.

[drowsy zephyr]

guys, do you guys have any casual ways to relearn electrical engineering?

[late fulcrum]

Usually for me, it's grab a breadboard and some parts and build some things.

[outer blaze]

Yeah no film. No worries though I ordered another camera module, thanks for the help

[modern edge]

Where can i download projects for my matrix portal m4?

[modern edge]

It does not even have the sand demo, it just shows up blank.

[charred lintel]

This is the main guide https://learn.adafruit.com/adafruit-matrixportal-m4 that shows you how to get started -- it includes the sand demo in the Arduino section

These are all the learn guides for projects using the board: https://learn.adafruit.com/products/4745/guides

[valid spoke]

what flux does it come with

i generally like cleaning mine but a no clean would be interesting too

[late fulcrum]

It's available with several choices of flux. I usually go with RMA flux, which is no-clean, but there are others available.

[shadow siren]

sigh nice slder but expensive

[late fulcrum]

True, it's not cheap. But notice the production date on that: I've had that spool for ten years, and I do a fair amount of soldering.

[edgy plaza]

tiny happy news! I finally got a new OV 5647 module and finally it works

my helmet will finally have eyyeeess

[dusky canopy]

byebye

[shadow siren]

My rolls of Kester is dated 1999.

[night crescent]

LIVE NOW! Adafruit on the Open Source Hardware Association Show and Tell event #OpenOct
https://youtu.be/L6jIMzSJioc

Talking about https://certification.oshwa.org/list.html?q=adafruit and more!

[night crescent]

SHOW and TELL 10/2/2024 https://youtu.be/8NxmR86veDM

[night crescent]

WE ARE LIVE in BROOKLYN! ASK AN ENGINEER! https://youtu.be/xJvw-Q6AWiA

10% discount code, code is: pinfpc ends at midnight NYC time - SHOP NOW! https://www.adafruit.com

[burnt tendon]

I am suddenly very angry that the Adafruit blog described an Apple IIgs keyboard as a Mac IIgs keyboard.

[patent hemlock]

arg! that's like saying a ][+ was the same as a //e

[burnt tendon]

Exactly. Grab your torch and/or pitchfork and join me.

(It does kinda make me want to go back to my ages-old design for a Snow White esque case for modern hardware and make a 3D printed version of something)

[sharp jasper]

heyo! im 14 and for whatever reason i was wondering if getting IT certified (comptia a+) now instead of later would help me out at all

[rapid geode]

go outside and play!

😛

j/k

(i dont know anything about IT)

[thick wind]

Especially if it's something you're passionate about, getting certified earlier is almost always easier while you have less of the real world to have to worry about. However, in the really long run, when you got certified won't be a benefit in itself, and as the technologies advance, it could potentially go out of date to some extent.

tl;dr at this stage of your life, don't question its benefit to you, question if it's something you would want to do.

[orchid abyss]

don't these certifications have it's own expiration date?

i believe you will have to retake them

[thick wind]

They should, typically. Not always, but usually yes.

[orchid abyss]

i do agree on "as the technologies advance, it could potentially go out of date to some extent"

assembly from what i've seen was a huge thing in the 90s, everyone knows it

but in web 2.0 era many people shifted to high level programming languages

[patent hemlock]

depends on what you mean by "IT" -- your best bet is to continue your formal education and once you've finished high school (or whatever term you use for secondary level education), then you have the option of going "trades" (e.g. specialized IT trade school) or more formalized through college-level education

the big thing is to KEEP LEARNING: at this point, I've forgotten more computer languages than I currently have in my head, but I can read just about anything because at the root level, they're all doing the same thing

[dusty citrus]

They're pointless. Any business who requires certifications, will pay for them, usually it's due to abide to no sense regulation.
Be wary to anything that promises you to have a job once you have a certificate, that's marketing to make you buy for a some paper

Knowledge it's out there and it's free, it's not anymore 19x0. All those certifcations, schools that I see pop up, are essentially all scams, either to get funds, and/or privatize markets

[rustic forum]

Hi

[ancient phoenix]

do someone know where can i find espnow library

[umbral phoenix]

@ancient phoenix for what platform? (arduino, circuitpython, esp-idf)

[ancient phoenix]

arduino

[ancient phoenix]

arduino

[umbral phoenix]

it may be part of the board support package already, does it error if you include it in code? https://docs.espressif.com/projects/arduino-esp32/en/latest/api/espnow.html

yeah, looks like it's there automatically for esp boards

@ancient phoenix

(that was on a fresh install of Arduuino IDE)

[ancient phoenix]

i tried to install it again but this happens

[umbral phoenix]

I'm not sure about that one, try asking in #help-with-arduino

[night crescent]

frighteningly good deals await! 🎃👻 take 10% off your Adafruit order with code HALLOWEEN10, today only. grab your treats before they're gone! ⚡🍬 https://adafruit.com

[hasty wedge]

This is cool

PDS8F208A

LGT's new AVR compatible MCU that supports fast charging

Hopefully it can be as easily purchasable as the legendary LGT8F328P

[orchid abyss]

that's a video.. very suspicious.

OOOOOOOH that's because it's a video with music in it. got it. didn't have my speakers on. sorry about that.

[versed pewter]

I am currently using CircuitPython 9.2-beta 0 with my Sparkfun Pro Micro 2350.
os.uname() is still showing the machine as rp2040.
Is full RP2350 support coming soon?

[fair summit]

it is supported. That uname() value is just wrong. I just fixed that: https://github.com/adafruit/circuitpython/pull/9683

[versed pewter]

Thanks Dana

I mean Danh

[twilit onyx]

Thank you for your resource suggestions over in the live broadcast chat, @idle lion . I've been thinking about a better way to frame my question, and I suppose what I'm really after is some sort of central guide that catalogs the types of information CtPy is able to convey about the board it is running on and explains how to expose that information both from the board 'directly' and through an external probe. Related would be an explanation of what CtPy does when it runs on a board: what happens when during boot up, for example; when it reads sensor data, presumably via register entry, are those registers 'on' the sensor or something 'on' the main chip; when CtPy creates a register, is the address determined by protocol (i2c starts at 0x0100, spi at 0x0200, etc.) or is that determined by the chip itself; can one determine what processes are blocking versus non-blocking in advance; in short, is there some guide to de-abstract what CtPy abstracts away? Simple ask, right? 😄

[umbral phoenix]

@twilit onyx here's an (outdated; CP 8) gist of some of the things you can determine about a board programmatically https://gist.github.com/anecdata/b3bd4f1fb98c29296de458066399bdf6 ...check out particularly these built-in modules in the repl: os, supervisor, microcontroller, board, storage. Also check out the various "pin finders" in the learn guides that programmatically can find the pins that are valid for various mijds of SERCOMs like I2C, UART, etc.

also... do >>> help("modules") in the REPL, and dive down (dir(), help()) on all the things 🙂

code-generated docs are here: https://docs.circuitpython.org/en/latest/shared-bindings/index.html

Highest-level intro to the code structure for the core C code is here: https://docs.circuitpython.org/en/latest/README.html#project-structure
Code is here: https://github.com/adafruit/circuitpython

[twilit onyx]

I have gone spelunking, but rather quickly run up against my limited ability to make much of anything from what I find

Thank you for these resources, @umbral phoenix

[umbral phoenix]

np, it's hard to know where you're coming from, I'm sure there's no perfect resource for everyone. for someone new to various aspects, there are multiple learning curves... some people like to find videos, some people like to read docs or code, some people like to play in the REPL to learn. BTW, there's a slightly fuller list of resources further down in the pinned messages of the #help-with-circuitpython channel

and ask lots of questions... the more specific, the easier to answer 🙂

the two circuitpython main learn guides (welcome and essentials) give a good context for how everything fits together

[twilit onyx]

Yes, I tend to like reading (my background is in English lit, after all), but also playing in the REPL, as much as I can manage. Some of it is simply not knowing what's possible, though, which is why I like watching the deep dives with @stuck moth and @idle lion

[terse lava]

I am a big fan of the REPL for learning. I use CircuitPython and while it is great in that you can make a code change, save it, and then see it run immediately, there is still a bit of lag in there. With the REPL I can import libraries and then simply type in lines of code and see what happens. If it doesn't work right I can UP-arrow to load that line again and change it slightly and enter it. Much master when you are just playing with concepr or wondering if doing something slightly differently will work without having to keep changing and rerunning larger programs.

[clever sentinel]

why most fonts dont have degree unit º for displaying temperature ºC?

[burnt tendon]

Because ASCII was designed very carefully to fit everything they thought they needed in 7 bits and they left out a degree symbol, which means that you can get away without it kinda sorta maybe sometimes.

[late fulcrum]

I'll often replace characters I don't need with characters I do, to avoid having to do gymnastics to have more glyph addresses. That's how I added the ghost and clock symbols to this cosplay display

[night crescent]

We are LIVE! Desk of Ladyada - Sample Sunday: cafe lights and TM1814s 🌈💡🔌 https://youtu.be/7qozX1owTSM

[terse lava]

I recently put up a public "My Notes" on Adafruit on creating reduced bitmap font sets and in step 3 of my little cheat sheet I make a point on pointing out to be sure to pick up the degree symbol and also noting even CircuitPython's built in font does not carry it. It is weird considering a huge number of our microcontroller projects involve measuring and displaying temperature. My guide if you care https://adafruit-playground.com/u/Timeline/pages/creating-reduced-sized-bitmap-fonts-from-ttf-file

[clever sentinel]

Ill check that out. Thanks!

[charred lintel]

Or the exact same info in the Adafruit guides:
https://learn.adafruit.com/custom-fonts-for-pyportal-circuitpython-display/conversion
and
https://learn.adafruit.com/circuitpython-display_text-library/use-fontforge

Still not helpful for CFalconPT, since Adafruit_GFX lib for Arduino only supports 7bit symbols.

[hallow locust]

Hi! I just received my RP2350 HSTX feather, and the LiPo jumper was cut when I received it.

[fair summit]

checking on this...

[hallow locust]

thank you!

[kind swan]

good afternoon, I have what I hope to be a somewhat simple and straight forward project. I created a cable to for my dl380 g9 motherboard to db9 connector. However, since HPE doesnt like to give out pinouts, or any specs, I am trying to make a device using arduino that I can plug into my rs232 port, and test if my pins are correctly connected to the motherboard. Anyone have any ideas?

[late fulcrum]

You don't even need an Arduino, just some LEDs. There are RS-232 breakouts available with the LEDs as well. It's probably worth identifying at least the zero volt ("ground") pin to use as a reference to measure everything else. If you did want to use an Arduino as a tester, it would take a little interfacing circuitry as Arduinos operate on 0V and 5V (or 3.3V for some variants) signals, and RS-232 is often -12V and +12V or somesuch, so you'd need to adapt that somehow. If you make a mistake with LEDs and damage some, they're inexpensive and easy to replace. If you make a mistake with an Arduino, you could damage the Arduino, which would be a shame.

[kind swan]

Ahh true with leds being cheap. I can easily identify the ground. I was just hoping for a simple way to write some code conenct it and have it verify connections. I know I would need to use a max232, or similar.

[late fulcrum]

You could use some voltage dividers and resistors to probe pins by driving them (though a resistor) and seeing if the voltage on them changes. If it doesn't change (much), that pin is probably being driven and is an output. If it does change, that pin is probably not being driven and is an input (or not connected). Exercising the port to assert control signals (DTR, RTS, CTS, etc.) will help identify which is which, and sending data will show which is the transmit pin.

[kind swan]

at this point would probably be cheaper to just get the tester from amazon. I had some stuff laying around but not some of the stuff I would need for this. dangit!

i tried to contact HP on it and use the excuse that wire got cut when putting the riser card in by our team, but then they wanted us to pay for a subscriptiong that likely would have been told "oh we dont have that you need to buy this 100$ serial cable" lmao

everything with HPE is behind a paywall

[terse lava]

Yes my "My Notes" points to that guide but I wrote mine as a quick "just do these steps" cheatsheet. Also note in both those pages you linked in the photos they make the mistake of leaving out the SPACE character. Oops. And don't include a degree symbol which is what brought this topic up here, the lack of a degree symbol in many fonts.

[stuck moth]

I think there is a trace between the pads

the pads are there if you want to reconnect them after cutting them

[hallow locust]

I see the trace! Thank you so much for the info

[stuck moth]

no problem!

[sinful stratus]

i have a feather rp2040 USB host and Adafruit_NeoPixel is conflicting with the USB host library (i think for PIO reasons). if i try to use the neopixel library it completely panics before setup code even runs. i think this forum post is the same issue https://forums.adafruit.com/viewtopic.php?t=210742

[gaunt folio]

hi, i need help with my Raspberry pi 4, i want use DHT 22 with Domoticz and the sensor doesn't work

i read this documentation :

[patent hemlock]

if you're using the newest OS, you really need to use a virtual environment setup first in order to use a lot of the drivers https://learn.adafruit.com/circuitpython-on-raspberrypi-linux

[idle iron]

is atom editor dead? i cant find packages for it, it links to "atom.io" but the page is just https://github.blog/

I need lisp thingy, so my code looks nice when editing halo scripts

[charred lintel]

like... ages ago

[idle iron]

i found an extension for visual studio for .hsc files

[patent hemlock]

is it just me or is the digikey search/link from Adafruit seriously broken (as in 500 broken)?

[fair summit]

do you mean on product pages?

[patent hemlock]

it seems they have had some server-side issues according to the email i got from them 😏

[fair summit]

glad they're working on it

[gaunt folio]

ok thx

[ebon dew]

https://tenor.com/view/florence-storm-hurricane-florence-waiting-for-the-hurricane-wipers-gif-12494427

[rare zinc]

For those unaware of the Earth web site, it uses GFS (open source US weather service data) and several JavaScript libraries to visualise global weather and other data. You can watch Hurricane Milton as it approaches Florida. Note that this site visualises a model of the current global data, it is not based on observational data. There's a menu at lower left to alter the view.
https://earth.nullschool.net/#current/wind/surface/level/orthographic=-83.53,26.30,4518

This is also a way to view the polar vortex over Antarctica, which blows 300-350kph continuously at high altitude (10hPa is the barometric pressure at ~20km). Clicking on the map will show you the data at that location.
https://earth.nullschool.net/#current/wind/isobaric/10hPa/orthographic=-88.39,-93.83,494

[night crescent]

WE ARE LIVE in BROOKLYN! SHOW AND TELL! https://youtu.be/7qRfarfqyuQ

[night crescent]

WE ARE LIVE in BROOKLYN! ASK AN ENGINEER! https://youtu.be/E2SSAqDXYtQ

10% discount code, code is: snapon ends at midnight NYC time - SHOP NOW! https://www.adafruit.com

[twilit onyx]

Great job with the Spirit Board, @idle lion ! (Catching up on the stream now)

[copper dune]

@charred lintel check pv

[odd warren]

I recently got a matrix S3 for driving an LED matrix. Do I still need to set up the wifi capabilities if I'm just controlling it using the io pins for this project?

[fair summit]

you mean settings.toml? No, if you aren't using wifi no need to do tahtt

[fervent rain]

Anyone know of some good solutions for tiny 1:220 scale street lights? Either wired or battery powered (or even some kind of glowing material) . I find most LEDs are a little too large. I've included a picture for a better sense of just how tiny it would need tk be relative to a building (20x20x24mm) lol

[whole jacinth]

bare chips or light pipes?

[whole jacinth]

bare chips typically need a wire bonder ($$$). light pipes need a place to hide the actual emitter (depends on the rest of the setup)

[fervent rain]

Hmm I'm not sure I haven't heard of those before. Basically I want as the smallest footprint as possible for a miniature model. The more I think about it I could construct a base to hide a very skin battery. I already have a base with NFC tag insert but I have less than 1mm to work with.

I was also looking at Adas wireless LED power coil as an option but that would only work with a massive base to fit the coil

[late fulcrum]

LEDs are available in various tiny packages (all the way down to 0201), which you can tack wires to (it's tedious but doable). And you can light them with 377 cells if you need to.

[fair summit]

if I search for Z scale street lights I get a bunch of commercial products

[late fulcrum]

Another alternative for a power supply is a miniature supercapacitor. You can get them in packages the size of coin cells (for example Elna offers a 200mF unit in the same 6.8mm package as a 377 cell)

[fervent rain]

Cool thanks 👍😁

[fair summit]

I don't think you could make them for yourself much cheaper 🙂

[thick wind]

For something like that, only thing I can think of is to use end glow optical fiber, but you’ll need to run a light source from somewhere. If the model has a base, you can hide it in that…

[thick wind]

Oh, @fervent rain 1:220 seems to be a pretty common scale size for model railways. Looks like there are some premade stuff online to buy or use as a DIY reference.
If you're committed to DIY, I know Adafruit has https://www.adafruit.com/product/5487 which could work, and I do see some resin-encapsulated pre-wired LEDs on Amazon too.

[fervent rain]

I'm back 🙋🏼‍♂️I come up with a cool idea to use the Adafruit conductive coil / led (https://www.adafruit.com/product/5141). Basically I'll compose my buildings inside the coil (with LED lights). It got me thinking about other potential uses for the coil besides LED. I was already looking into creating some kind of monorail/train system and after a search I found people powering batteries/magnets through coils.

I was wondering if I could use the mentioned coil to power a train? I'm assuming I wouldn't need the battery as the power source would come from the coil, so I would just need to arrange magnets? Also do you think a small train could be powered either on top, below or to the side of the coil without being inside a tube?
https://www.youtube.com/watch?v=J9b0J29OzAU

[late fulcrum]

I doubt there's sufficient power available to power the train from that coil, however there are ways to deliver more power if you want a wirelessly powered train

[fervent rain]

If that's the case I'm guessing it'll be more cost efficient to use motors? I mostly just wanted a way to maximise the space the coil would fill

inductive LED street light and building to scale with the coil

[late fulcrum]

Unless I misunderstand, you'd use motors anyway, the question is where to get the power to run the motors

[thick wind]

The inductive coil used to power the LEDs is not the same kind of coil that would drive a magnetic train.
While it may be possible to power such a train, I believe the losses in the inductive power transfer would make powering such a train very difficult compared to the single battery setup in the video.
The setup in the video is modifiable to work with two external coils, but the constraints of the magnets remaining in contact with the coils needs to be maintained. The efficiency will also be significantly reduced, as the magnetic field is stronger inside the coil compared to outside.

[night crescent]

Desk of Ladyada - Breakout Board Backlog https://youtu.be/oQUOjeIDtE8

We're tackling our breakout board backlog! Dusting off designs from 2021-2023 with help from ChatGPT for repetitive firmware tasks. Featured: VCNL4200 & LPS28 drivers. Plus, The Great Search is all about tubing for ported pressure sensors!

[spice moss]

https://x.com/SpaceX/status/1845442658397049011

SpaceX (@SpaceX) on X

Mechazilla has caught the Super Heavy booster!

Twitter · Oct 13, 2024, 12:33 PM

[patent hemlock]

https://tenor.com/Kzxk.gif

me seeing that earler

[gaunt folio]

if i doesnt want use a Virtual environment, what version i choose ? of raspbian or ubuntu

[ancient rivet]

can use latest OS and just disable the restriction:
https://learn.adafruit.com/python-virtual-environment-usage-on-raspberry-pi/other-ideas#return-to-the-good-ole-days-3158331

[loud abyss]

how easy would it be to build diy steering wheel for pc with potentiometer

https://www.youtube.com/watch?v=UBAXIijdweQ

something like this

[late fulcrum]

Pretty easy, if your PC has joystick ports

[loud abyss]

what does joystick port mean

like usb?

[late fulcrum]

Some PCs have dedicated analog joystick ports, often DA-15 connectors. For those, you just hook the potentiometer to the right pins and you're done. If you you want to use USB, I'm thinking a USB-capable microcontroller. You can get some useful information on that approach here: https://learn.adafruit.com/arcade-bonnet-controller

[loud abyss]

i have laptop so i dont know

potentiometer to microcontroller to usb would work then?

[late fulcrum]

Er, that's the wrong link anyway. Yes, that should work. The microcontroller would read the potentiometer position and send updates to the host. These days, it's often done using one of the standard HID devices, so you don't need a driver on the host side for it to work.

This link is more appropriate to your use case

https://learn.adafruit.com/trinket-usb-volume-knob

[loud abyss]

i used something like that in deej project

if you heard of it

so maybe it could work

but what about software

[late fulcrum]

That depends on what you want your steering wheel to control. Some games will work with ordinary HID devices, others expect specific kinds of things

[loud abyss]

just the steering wheel like in that video

asseto corsa or maybe f1 games

[lapis anchor]

Check out simhub, they have Arduno sketches you can load and configure everything via their software. https://www.simhubdash.com/ I believe that's what the YouTuber amstudio uses in his builds. (There's a couple pieces of software similar to that)

[stone vale]

@viscid folio two stanford students want to do a summer internship at Adafruit. Is there a process for them to apply? thank you!

[trail sky]

Hi everyone, I am Viktor from WIZnet. I was wondering if anyone can let me know how to get in touch with person in charge of wiznet5k library?

[late fulcrum]

It's on github https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k and shows a bunch of contributors. You could raise an issue or make a pull request there.

[hard estuary]

If your question is related to the development of the library, I would ask in #circuitpython-dev

[quiet bone]

@white compass yo

[trail sky]

thanks for the advice!

[quiet bone]

@white compass yo

[unique linden]

Was there any September Adabox?

[fair summit]

No - Adafruit was busy moving the business to Brooklyn over the summer.

[night crescent]

WE ARE LIVE in BROOKLYN! SHOW AND TELL! https://youtu.be/U_k2YzIVW-8

[night crescent]

WE ARE LIVE in BROOKLYN! ASK AN ENGINEER! https://youtu.be/N2GmWh7eR2Y

10% discount code, code is: triplepow ends at midnight NYC time - SHOP NOW! https://www.adafruit.com

[somber spindle]

is there a dark mode for adafruit learn guides?

[patent hemlock]

i use the Dark Reader plugin as well as set the browser(s) themselves to dark mode and i'm pretty happy across most everything

[fair summit]

The guides are undergoing style renovation, as you've probably seen already. No promises about dark mode, but there have been requests.

[shadow siren]

I am getting old and feeble, dark mode would be nice

[late fulcrum]

I am getting nice, dark and old mode would be feeble

[burnt tendon]

I am getting darker and darker, nice mode would kill me.

[low frigate]

Hi. i dont know where to post his, but im wondering about Github Student Pack

https://education.github.com/pack

where it says that my student can get AIO+ for a year for free. but the link only leads to the support page. does anybody know what my students should do?

[fair summit]

Could you write to [e-mail] about this? This came up a few months ago, but I don't know what the resolution was.

[glad ruin]

https://fixupx.com/VictorTaelin/status/1846909042251157696?t=nXqDSsBkswChc6owq4NgYQ&s=19

[patent hemlock]

i really like the apple research paper ... "undersized kiwis" 🤣

[jagged citrus]

😨

[honest moth]

i am in pain

https://youtu.be/7oNljd7R1f8

[night crescent]

Desk of Ladyada - Pixel Shifter Proto & Floppsy Re-visit 🖥️📀💾 https://youtu.be/sJrZRJUlvhM

We've got working Pixel Shifter prototype PCBs, leveling WS2811s and inverting TM1814s—final boards are booked! Also revising the Floppsy board for 3.25" drives, adding buttons, Apple Disk support, & more. Plus, we’re on the hunt for a short rotary encoder!

[unkempt sierra]

@night crescent I chose the watch face already and when i just press the button to go back and all of a sudden, the watchface that i chose disappeared

It is just back to defaulted plain watchface

[patent hemlock]

this is not an official support venue -- if you're having issues with an adafruit purchase or product, you need to use https://forums.adafruit.com/ and post in the appropriate topic for your problems

[unkempt sierra]

Ok

[brittle condor]

has anyone ever had a similar issues with the mcp4725 breakout boards?

[ancient rivet]

they generally are not hot swapable like that. what code is being run?

[brittle condor]

the module that doesn't work, doesn't worj even if it's installed before powering

#include <Wire.h>
#include <Adafruit_MCP4725.h>

Adafruit_MCP4725 dacX;
Adafruit_MCP4725 dacY;

// Set this value to 9, 8, 7, 6 or 5 to adjust the resolution
#define DAC_RESOLUTION    (9)

float i = 0;

#define X_addr 0x62
#define Y_addr 0x63


void setup() {
  Serial.begin(9600);
  dacX.begin(X_addr);
  dacY.begin(Y_addr);
}

void loop() {
  i += 0.1;
 Serial.print(i);
  Serial.print(" - ");
  Serial.println(sin(i));
  
  dacX.setVoltage(2048 * (1 + sin(i)), false);
  dacY.setVoltage(2048 * (1 + cos(i)), false);
  
  delay(50);
}

this is the super simple code that's running

tho i the address pin was delinked to make the dacs do the same thing

[shadow siren]

Well, the first day of Snow has arrived in Calgary

[urban citrus]

helloo

man this is a large server

[terse lava]

In Massachusetts, which ain't anywhere south, we hit a balmy 79°F in my town. Opened a bunch of windows to warm the house this morning.

[urban citrus]

Yeah it was around 80 here today as well

unseasonably warm

[terse lava]

Soon it will be pipe-freezing temps againt so enjoy the brief intermission from your high heating bills.

[urban citrus]

😭

dont remind me

[terse lava]

That reminds me, I should pull my generator out of the garage soon and test run it.

[terse lava]

variety is the spice of life. Go with the flow.

[urban citrus]

Fair enough

I just wish winter didnt drag on like it does

[terse lava]

While I haven't done it yet, I have watched videos where I am almost ready to buy a wood auger/wedge and split my own wood where I am staying warm from the exercise and maybe dropping a few pounds. I still have a wood burning fireplace.

[urban citrus]

Funny you say that, I cut down a tree and processed it with an axe, a maul, and some wedges as a fun project

Always thought it looked fun to do that

[terse lava]

"maul" that is the word I was looking for.

[urban citrus]

Was a loooot of work obviously but it was rewarding

[terse lava]

I thing auger is something you dig in the ground with?

[urban citrus]

I believe so

[terse lava]

How did the wedge work out?

[urban citrus]

Like if you were putting in fence posts

I'd say the wedge is probably the best tool once the tree is felled

Best way to break up the larger pieces besides chopping through knots with the axe

[terse lava]

Well ya, because the "felling" of the tree is where most people get killed.

[urban citrus]

You'll need multiple though, they tend to get stuck if you only have one or two

Otherwise you can use parts of the tree itself and pound those in like a wedge in a pinch

[terse lava]

so you say "Farts, well that one is dead to me" and move on?

[urban citrus]

It can take some work to get them out, so you usally just need to put more wedges in yeah

[terse lava]

OK so back to Amazon to add a maul and gloves to my cart, and then I am going to take down some trees in the yard, and then [totally to keep it on topic here] I am going to buy some environmental sensors to check my chimney fumes and of course temp sensors to check the room temp in the room with the fireplace and then I will need servos to control to flue, plus something something something... you get the idea

[urban citrus]

I wouldn't recommend going tooo heavy on the maul

I would say 8-10lbs is honestly pretty comfortable for me

Was using a 12lb for a bit and that was exhausting lol

[terse lava]

I had a maul in my cart for the last year plus and I think I removed it. Time to re-reseach it.

[fast ferry]

burning green wood without drying it first will produce more smoke and coat the chimney with more creosote, I believe. might need a chimney cleaning after the season? maybe look up advice.

[rapid geode]

ha ha. its still 25c here in the gta.

[unkempt sierra]

Hello im curious if there is a bangle js 2 available in navy blue color on Adafruit store?

Im wondering if its ever back in stock in future so that i could buy Bangle Js 2 watch online 🙏

[fair summit]

it is only black and pink https://banglejs.com/ and we only stock the black, sorry.

does the band look removable? maybe you could replace the band

[unkempt sierra]

Yupp i know the band can be removable but i prefer the watch head in different color

Okay thanks, well but i just go ahead to buy another black watch on Adafruit then. 🙂 thanks

[vocal hare]

Not sure if this is the right channel: are there any APAC-based Adafruit resellers/partners? I'm looking to propose a team activity using Adafruit boards and half of our little team is in India.

[faint fox]

Anne's appearance on Tom's hardware is about to begin 😁 https://www.youtube.com/watch?v=UysDRYfZLJ8

[thick wind]

https://www.adafruit.com/distributors#Asia-India

[vocal hare]

Thank you!

[night crescent]

10% discount code, code is: powerful ends at midnight NYC time - SHOP NOW! https://www.adafruit.com

ASK AN ENGINEER 10/23/2024 LIVE! https://youtu.be/RiP8XanW4sU

[lapis girder]

Hi I found that my antenna has a p65warnings why idoes it have this and what does it mean

[thick wind]

tl;dr Don't eat anything with a prop 65 label on it.

California's Proposition 65, officially known as the Safe Drinking Water and Toxic Enforcement Act of 1986, mandates that a warning be placed on any device, any part, and in any location where any potentially cancer-causing material can exist. That being said, most electronic devices have prop 65 warnings, as the list of hazardous materials include lead found in solder, cadmium and lithium found in batteries, etc. Does this mean electronics cause cancer? Not unless you're sticking these materials in your mouth or your drinking water.

[tranquil swallow]

If you live in California that label is on literally everything, everyone just ignores it

[golden saffron]

This is the datasheet of a MOSFET, but I don't understand.
In one section they state Rg is 16ohm but in the measurement they give values with a Rg of 2ohm.
So what is it?

Did they mean that they added another 2ohm?

[golden saffron]

I think that's the external gate resistance

[glass valley]

Re: The Lady Ada's namesake, this recent video on Brady Haran et al's "Objectivity" YT channel about discovery of previously uncataloged letters to and from Lady Ada as well as other work by her gave me chills. https://www.youtube.com/watch?v=Vetzq7EX7TU

Coorrespondence with Herschel etc, climate science, engineering, etc.... just wow.
Includes a drawing of baby lady ada lovelace that her dad kept... ❤️

[dusty citrus]

Not looking for something diy, nor for a toy. You know those quadruped robots? I wanted something alike for 2-3k max. Which can carry some weights, and do stars/different type of grounds

Couldn't really find anything off google or AliExpress (all sort of stuff it's there), so I'm asking here, in the hope someone knows anything

[orchid cedar]

I'm looking for hardware recommendations.
There's a project I'm wanting to do where an actuator would open and close ( 2 outputs) based on time of day and a predetermined frequency.
I'd like the operator to be able to set the time of day by using a web interface.
I'm used to programming industrial PLC's, but I'm not familiar with hobbyist level hardware. What kinds of options do I have?

[umbral phoenix]

@orchid cedar time of day could be manually set, but different microcontrollers have different rates of drift. With extra hardware (perhaps, depending on the microcontroller chosen), you could get the time using wifi, ethernet, LTE, GPS, etc.

[tardy bough]

STM32?

[umbral phoenix]

easiest would be to add a network module so you could do NTP or get the time from the internet in some other way (still need to deal with time zone offet, and seasonal changes)

...or, you could add a real-time clock module to keep more accurate time after it's set manually

[tardy bough]

whats the coolest new toy adafruit put out?

[orchid cedar]

Unfortunately the place it's going to be used will be somewhat remote and won't have access to wifi all the time. I was looking at something like an esp32 with a RTC module, but I'm not sure if they support a webserver for configuration.

Idea being that the operator could bring it closer to the house where there's wifi and a laptop to configure it and then send it back out to the field after.

[umbral phoenix]

@orchid cedar ESP32 should be able to operate an AP (or connect to the house AP) and host a simple web page, depending on the programming environment used (are you thinking of Arduino, CircuitPython, etc.?) ...ESP32 variants like ESP32-S2 and ESP32-S3 provide some advantages, but in theory any should work

[dusk raft]

Is it possible to mirror the image from an ssd1306 OLED to pc? What would be required? The device is not open source I'm just wanting to do this as an overlay for streaming. If anyone has info it would be greatly appreciated.

[vestal pier]

you could 'sniff' the data bus, decode it, and programmatically duplicate the display

[cloud pilot]

hey guys I have a longshot here but I'm trying to find this old toy i had back in the early 2000's that was a black rectangular keychain with 6 light up buttons with this specific reflector diffusion texture. I've been thinking about this thing for the past 20 years and i finally described it to my sister and to my suprise, she remembers it but we have no idea what it was, I sketched up a little reference.

it was pretty small maybe 1x2 inches

[somber spindle]

did you have to repeat the pattern, simon-style?

[cloud pilot]

i was like 4 so i dont remember :c and neither does she, all we knew is that it stimulated our brains lol

neuron activation

mightve also been a 3x3 rather than a 2x3, but i specifically remember the squares and the diffuser texture

[azure grove]

hi friends! how are you doing?😊

[hollow flint]

I'm okay. 🙂

[azure grove]

that's great!😄

[trail bridge]

Kind of a weird question/comment but the "open-source" licence "Attribution-NonCommercial-NoDerivatives 4.0 International" doesn't seem very open source to me. From my research it doesn't even let me make my modifications to the code public, which seems crazy to me...

But at the same time, it says I can if I credit the author. The creative commons website says that a copyright is neccecary for the license to work, but why make code public if you won't let people build on it

I'm quite confused, could someone explain exactly what I can and can't do with a codebase with this license

[fair summit]

what are you seeing that has this license?

[trail bridge]

https://github.com/nathalislight/NCAT/

[trail bridge]

Images are from https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en

[fair summit]

From my searching, this license is used mostly for academic papers, not code. That makes sense: freely reproducible, but you can't modify the paper (and thereby mislead the downstream recipient). For code, it ensures tight control by the original author about forks being unavailable.

[trail bridge]

Hmm, so then I can't make my own fork of this... Alright, thanks

[fair summit]

you can't make your fork public

[trail bridge]

Yeah, sorry, that's what i mean

Do you know if I can use parts of the code (eg. certain files) in my own codebase? I only need one specific file in the code, not the rest of the repository. And that one file doesn't have a license and the top of the file (or anywhere for that matter)

https://github.com/nathalislight/NCAT/blob/35d30772320e640afe238c749ade69ec8e1983fd/NCAT_ESP32/GBC.h if you are wondering

[fair summit]

"GNUboy" is in a lot of other repos, so maybe you can find it somewhere else

[trail bridge]

Yes, possibly... The reason I like this one is because it is already ported to use Arduino calls instead of SDL or ESP-IDF calls

but it shouldn't be too hard to do it myself

[fair summit]

I searched for gnuboy_load_bank and found it in 28 other repos

[trail bridge]

And also because they compiled a large project into one file which is easier to work with (for me)

[trail bridge]

I'll look into it

[trail bridge]

Oh, cool, I see them (although most of them are retro-go forks, which I have already experimented with and decided it was too much of a hassle)

This one looks interesting, I'll work on that
https://github.com/SnDream/gnuboy_rs90/tree/7e5f416c4babc9a3ec6337768e95946a84011ff9

[fair summit]

there is a lot of other code in that original repo that can't fall under the overall license: there is btstack code, GPLv3 code, etc. I'd look and see if that GBC file is actually lifted from somewhere else.

[trail bridge]

Yeah... This whole license seems really wrong to me because it is basically giving the author a patent with no checks for if the code is ripped, and with no risk or anything

But yeah, it is possible that the file is lifted

I mean, as far as I can tell they just pasted all the different files from GNUBoy into one file, but I'll do some looking

[fast ferry]

if the repo's applying an incompatible license to code licensed elsewhere, or claiming ownership over code that isn't licensed to allow that, well, they can't do that. 😛

IIRC, Creative Commons recommends against using their licenses for code. lots of people still do it sometimes, myself included. they have nice plain-language explanations of how the licenses work, nice license logos, nice attribution/citation guidelines, and they're pretty well-known.

[outer oak]

Hey if I have a question about the bluefruit connect app which channel should I ask in? I'm trying to send images to my gizmo but it's telling me it needs permission to access my photo library.

[lapis anchor]

If you're on Android you can long push on the app and go to info and check permissions, enable file access if it's not already.

[outer oak]

Storage isn't an option in mine

[lapis anchor]

Hmm interesting, same on my work phone. (Android 14)

[chrome geode]

should we expect to see a separate storage device when mounting one of these drives?
https://learn.adafruit.com/adafruit-spi-flash-sd-card/circuitpython
https://learn.adafruit.com/micropython-hardware-sd-cards/circuitpython

when plugging it into a computer I mean

please ping me if ya'll have an answer

thats my code

[boreal dragon]

what is the cheapest possible setup for a video greeting card. I've seen people do it with the PyBadge LC but that's still $30 each. Surely there's a cheaper way to combine a screen, a microcontroller, and a couple of buttons.

[late fulcrum]

Possibly one of those programmable eInk store price tags

[glacial wigeon]

https://hackaday.com/tag/electronic-shelf-label/
various articles on repurposing those tags

[boreal dragon]

interesting idea. thank you.

[odd warren]

I'm trying to run a LED matrix display using a Matrix Portal S3. The Adafruit setup guide starts off with using circuitpython to program the S3, but most of the other guides I've seen online use Arduino IDE for programming. Does Arduino have a bunch of functionality that is missing with circuitpython?

[boreal dragon]

Doubt it. Arduino is older and runs on lower-end hardware so there's lots of sample code in it.

[whole jacinth]

it depends on a lot of factors. generally, Arduino code will have better performance than CircuitPython, and some boards don't have enough resources to do much in CircuitPython

[odd warren]

Ok, thanks

Is there a good guide that breaks down how you actually display an image or text on a LED matrix?

[jagged citrus]

$2,000,000,000,000,000,000,000,000,000,000,000,000 rubles

[patent hemlock]

and some people think russians have no sense of humor...

[shadow siren]

its up to 20 Decillion now as reported on Slashdot

[terse lava]

https://tenor.com/view/dr-evil-austin-powers-mike-myers-gif-5537635

[spice moss]

https://tenor.com/view/drevil-billion-gagillion-gif-20035629

[night crescent]

WE ARE LIVE in BROOKLYN! SHOW AND TELL! https://youtu.be/DVZf3TpAmIw

ASK AN ENGINEER returns next week, the talent (ladyada) was not feeling so good, so we did Show and Tell and we'll get back to ASK an ENGINEER next week! Here's a discount code for tonight regardless! 10% discount code, code is: pixelshifter ends at midnight NYC time https://adafruit.com

[dusty citrus]

But don't exist like "smart" relay driver power strips?
Couldn't find anything for cheap
Yet relays 240v ac go for like 1/2€ each...

Yeah I can diy it, but they won't like it a the job, because they need to be from distrubutors and paperwork no sense

[thick wind]

I’ve seen them for us plugs, but idk for 240…

[brittle bison]

Is anyone around and willing to help me understand i2c a bit? I don't understand how this device I'm sniffing writes to an address (device) and then just writes 1 byte and is done. I thought it would need the address, the register, and then the actual value.

[fair summit]

some devices are so simple, they have one implied register

the bytes written are just data. It is up to the device to interpret that as a register address and register data

[brittle bison]

Hmmm ok. This is the device - https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/206/AK5704_Jan2022.pdf and I'm seeing a ton of writes to 0xF4 which isn't even in the register list!

[hollow flint]

Look for switched PDUs, such as this one: https://tripplite.eaton.com/2-3-2-9kw-single-phase-switched-pdu-200-240v-8-c13-c14-200-240v-input-6-5ft-cord-1u-rack-mount~PDUMH15HVNET

[late fulcrum]

I ended up building my own, but used triacs instead of relays. However, I have the appropriate tools, protective gear, and experience to work with mains voltage.

[vestal pier]

I wanted to roll-my-own AC SSR using triacs, but ended up opting just to spend the money and get Crydoms.

[late fulcrum]

Those are convenient and reliable

[spice harness]

I'm looking for an alternative to the X9C104 100K digital potentiometer, I need something that can receive a signal and convert it into a value on the potentiometer value.
the problem that I have with the X9C104, is that it only support Up / Down signals, and to use it I need to reset it to 0 and that pulse it up each time,

[dusty citrus]

Same... I wonder why, unless they're sold only to businesses with losey pockets

Maybe I should just do diy, with a knock off plastic shell lol

[late fulcrum]

Maybe something like the MCP4018?

[spice harness]

@late fulcrum Looks good!!, Thank you so much!
I see that people use it with Arduino. is there any libraries for esp32 for this digital pot?

[winter crow]

hello everyone
i want to do a rice spoilage detection project any sensors recommendations?

currently i am thinking of BME680

[somber spindle]

Do you know what makes rice spoil?

[winter crow]

yeah when it spoils it releases VOC gasses

also is there any tutorials on how to set up the BME680?
i am a beginner

couldnt find any on youtube

[fair summit]

https://learn.adafruit.com/adafruit-bme680-humidity-temperature-barometic-pressure-voc-gas

[winter crow]

thank yooou

[bleak fox]

Has anyone read Donald Knuths books? What did you think about them?

[late fulcrum]

It's been years, my memory was they were information dense, a bit speculative, and somewhat demanding.

[night crescent]

Desk of Ladyada - Standing Desk Complete! 🖥️⚙️🔌🔍📐📦 https://youtu.be/BWfPjphUzKA
🚀 Ladyada’s Desk goes standing! 💪 This week’s upgrades include LINAK swag, a desk-mount USB PD hub for powering gadgets, and under-desk cable management. Plus, on EYE ON NPI, we spotlighted Lepton IR cameras and explored ideas for a DMX FeatherWing. Check out the latest updates! 👉

[coral badge]

[shadow siren]

Lol This meme is great https://youtu.be/mDhNQPt8An0

[terse lava]

Funny. But to save people some time, once you see the first 10 seconds of the video you have seen it all. They only change "camera angles" a couple of times but the chip doesn't do anything extra or different (unfortunately). Thanks for sharing. Gave me a chuckle. I like that it is an old 555 as well, appropriate for the time period of the song.

[lean sky]

Do you guys also include random doodles on prototyp PCBs?

[late fulcrum]

Yeah, in silkscreen, soldermask, copper, whatever. It doesn't cost any extra, and it's fun

[weak reef]

So I got a KB2040 free with a recent Adafruit order and tbh I have no idea what to do with it

It seems like it's very specifically targeted towards people who make their own keyboards?

[fair summit]

It is the same form factor as the Arduino Pro Micro, but otherwise it's a pretty vanilla board, with a STEMMA/QT connector, and lots of available pins. YOu could use it instead of a Pi Pico, a Feather (without the battery capability), or a QT Py RP2040.

The reason we made a board that size was as a more-or-less drop-in replacement for keyboard projects that use the Arduino Pro Micro

[somber spindle]

arduino pro micros were (and probably still are?) popular in custom keyboards like ~2-3 years ago and also unobtainium during the great covid parts shortage

[hollow flint]

I believe you could use it as a SWD debugger. Just flash the latest debugprobe_on_pico.uf2 from https://github.com/raspberrypi/debugprobe/releases. Read Appendix A of https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf to see a pinout diagram that uses the original Pico. You'll need to correlate the GPIO numbers with the KB2040 pinout diagram.

[limber dome]

What ESP board would you all use for a 3D chart viewed from an html page and to save the reading from audio jack with a sensor to a SD card with a push of a button. I was thinking circuit python could run the 3D plot and capture live feeds. Have a second button to switch to the next row of the 3D chart.

[hasty wedge]

I recently found a new micro called HC32F460JETA

super cheap (1 USD) Cortex-M4F with DSP, LQFP48, 512KB of flash, and 192KB of RAM

You can etch away the laser marking and nobody can tell which micro you are using

On this topic... Do you guys sand away your chip markings?

Like if you're gonna sell or give away your devices

most of the chip I use doesn't come with chip marking anyway so not a concern for me

[north cipher]

can anybody tell if pn532 supports nfc/rfid emulation

@crystal ore pls help

[crystal ore]

This answer seems to indicate that it can: https://stackoverflow.com/questions/14430285/can-i-emulate-a-tag-using-the-pn532-without-a-secure-ic There's a link to some appropriate commands in the chip's manual that might provide more details.

[north cipher]

thanks how can i run these cmd i m using circuit python

[crystal ore]

Good question. I'm not sure if the library has calls to support that, but it does look like it at least has a generic call_function() API where you can probably send any extra unsupported commands to the chip yourself. https://docs.circuitpython.org/projects/pn532/en/latest/api.html#adafruit_pn532.adafruit_pn532.PN532

[north cipher]

thanks brother

[tawdry sundial]

Hey yall! So I've been battling some lora modules for a hot minute and this is basically a last resort to reach out here.

I have an idea to create a flight computer/ground station system with LoRa communication. I got rylr 498 modules that worked pretty well, but with fairly small range for what I was looking for, and also I plan on using a directional yagi for the ground station for more robust data acquisition. So I moved to ebyte e32 modules that I can't get working for two weeks straight now (they report transmission, nothing is received). So I plan on getting something adafruit for that application. What would you guys suggest I look into, that will be able to interface with a teensy module for data logging.

[late fulcrum]

Product IDs 3072 (900MHz) and 3073 (433MHz) are just the bare modules and can be wired to whatever. I ended up using a cubical quad antenna in a similar situation to reduce polarization loss due to different antenna orientations.

[tawdry sundial]

This seems good. Thanks! I really hope I don't end up fighting over configuration software issues the same way I did with the e32s, though

How good is the teensy/arduino architecture support for these

[late fulcrum]

There are a few libraries to choose from, RadioHead, SparkFun, and lowpowerlab among them. Some poking around on the net reveals that people have had good results with the lowpowerlab library https://www.github.com/lowpowerlab/rfm69 and the Teensy, once they had the wiring and configuration sorted (SPI, interrupt pin configuration, etc.)

[hasty wedge]

[regal sinew]

Hi, really ugent need! I just bought a bluefruit and even with lateset uf2 and bootloader, it cant work with any example code! the same code works on my normal playground. is my bluefruit going wrong? anyone see the same issue?

i am doing a project and it is really depressing

[north cipher]

I all wanted to add an ir sensor an nfc tag and a rf transiver and receive to d1 mini

Which language to choose micro python or cpp in aurdino ide

Also wanted hid support to make bad usb

@crystal ore could u help me 🙏🏻

[weak reef]

Generally speaking, it depends on what you want to do

[crystal ore]

Well, one obvious question to ask is whether you know Python, C/C++, both, or neither? You can probably accomplish this with both platforms, so it just depends on what you think you would enjoy more and be most efficient with.

[weak reef]

Personally, I tend to avoid Python because I prefer languages with more strict type systems (Rust my beloved). But when I do CAD, I use build123d, a Python library, because it's typically the resulting object that matters to me, more so than the code itself

And for certain projects, I go where the library ecosystem is. For microcontrollers, that's usually Arduino C++

[ancient rivet]

is the "normal" playground a non-bluefruit one? what's the code? what's the issue?

[north cipher]

Also wanted to control all this by an oled display

[weak reef]

So instead of describing what bits and bobs you're gonna use, how about you explain what it is you want the whole thing to do?

[crystal ore]

I'd advise trying to build the project up in stages, rather than trying to do it all at once. You'll learn a lot as you go, and it'll make everything easier to troubleshoot.

[north cipher]

Hmm I think to start with ir function actually I m not that good at coding 🥲

[weak reef]

What's the whole project supposed to be?

[north cipher]

Like we would have options to select for bad usb , ir transmitter receiver,wifi deauther , nfc/rfid read write emulate all controlled by button and oled display files could be saved on sd card module

[weak reef]

So it's a little penetration testing tool?

[weak reef]

It sounds like you want one of these: https://flipperzero.one/

[north cipher]

Yup

Don’t have 200 dollars also not available where I am living

😂😢

[weak reef]

It's all open source, including the 3D models for the case. If you have access to a 3D printer and you can get the individual parts, you might be able to just build your own and flash their firmware on it

[north cipher]

But still the cost is not in my budget

🥲 it would still cost 80-100 dollars

[weak reef]

I mean, generally speaking, that's just what the parts cost. A completely DIY solution would still involve purchasing similar hardware

There's no easy way around that

[north cipher]

Hmm Wht u think could we build this with esp Wht u think it’s possible

[weak reef]

The Flipper Zero runs on an esp32

[north cipher]

Nah bro it’s stm32

https://github.com/cbwhickstein/Flipper_Zero_DIY

[weak reef]

Whoops that's my bad

So the ESP32 has WiFi, bluetooth, and I think USB built in. Screen costs extra money, IR costs extra money, RFID costs extra money, sub-GHz radio costs extra money

Battery costs extra money

Input devices cost (a bit of) extra money

What you get in functionality depends on what you are willing to pay for in hardware

[north cipher]

But it’s way cheaper than the flipper u could check the GitHub link

[north cipher]

True

I have display ir sensor battery esp

[weak reef]

Looked at that GH link, and found this sentence at the end of the info section:

the price of creating a DIY Flipper would exeed the price of a bought one.

[north cipher]

🧐 hmm

[weak reef]

If the display you have isn't a touchscreen, you'll need to get an input device of some kind. A rotary encoder would give you a selection dial and button rolled into one, and they're cheap

[north cipher]

Have push button

But why r we fighting

Just help me with software hardware can be arranged the main final boss is firmware 😢

[weak reef]

Yeah but the firmware you write depends on the hardware you're gonna use

[north cipher]

Nfc/rfid pn532

Normal ir transiver and receiver

Radio rxb12 and fs1000a

Deauth can be done by esp itself

USB rubber ducky with ATmega32u4

Attiny85

@crystal ore Wht do u think

[regal sinew]

@ancient rivetyes, i mean i have a non-bluefruit one and a bluefruit one, and the same code, mostly example code only function on non-bluefruit

my bluefruit can only give red light blink twice, so weird, any sample code wont work

[north cipher]

U using circuit python

[regal sinew]

yes

i followed every tutorial that i can found only, upgrade my bootloader, just wont work, it is a brand new bluefruit

[north cipher]

https://youtu.be/yXA8b7rTans?si=xq0VXFNAsrKsR7C5

See if it helps

[regal sinew]

yes i followed this

my bluefruit will only blink red light no matter what code i put into it

and the same code works on my non-bluefruit playground

[north cipher]

See if all dependencies are fulfilled

See his next video of circup

And make sure all req are fulfilled

[regal sinew]

so for now, i was wondering if it is my bluefruit is broken when it came, and i dont find a window to do return or replacement at adafruit

yes, i tried circup!

[north cipher]

Bruh then go to #help-with-circuitpython

[regal sinew]

yes, i sent a message there. thank u

[north cipher]

@regal sinew yup it feels really bad if ur piece of hardware doesn’t work happens all the time with me🥲

[weak reef]

Hey just a quick note on discord etiquette: some people consider it rude or annoying if you repeatedly ping them. It's generally best to check if people are OK with being pinged before doing it too much

[north cipher]

Ok

[regal sinew]

but does adafruit do return or replacement??

[north cipher]

Idk

[north cipher]

See their website

https://www.adafruit.com/shipping#:~:text=To arrange for a return,shields%2C gloves%2C etc.)

Could u help me building clone of flipper zero with esp

[ancient rivet]

@regal sinew continuing in #help-with-circuitpython , since this seems CP related

[quaint timber]

Newbie here. Which arduino starter kit should I start with that's budget friendly? (under $50 if possible)

[fair summit]

We have one for $45, with our Arduino-compatible board. We also have an experimenter's guide: https://learn.adafruit.com/experimenters-guide-for-metro, but that is meant to go with a more comprehensive kit: https://learn.adafruit.com/experimenters-guide-for-metro

[quaint timber]

https://www.adafruit.com/product/68 <- this one?

[fair summit]

yes

there are cheap kits also. I got one from Micro Center quite a few years ago

https://www.microcenter.com/search/search_results.aspx?N=&cat=&Ntt=arduino+starter+kit&searchButton=search

and many on amazon

[quaint timber]

thank you. want to start somewhere to learn the basics first

[fair summit]

besides arduino, you may also want to consider CircuitPython,

depends on what you want to learn

[quaint timber]

looking into as well, this is the tutorial which i'm aiming 1st https://fprime-community.github.io/fprime-tutorial-arduino-blinker/

[fair summit]

This is the same as https://www.adafruit.com/product/3345

also consider:
https://www.adafruit.com/product/3333
https://www.adafruit.com/product/4333

https://www.adafruit.com/product/3977

[quaint timber]

between different starter kit, what's missing compare to the more expensive one?

what can't I do with the cheaper one?

[fair summit]

more expensive one has a nicer breadboard, has an LCD display, remote cohntrol motor, servo more sensors, and some more components

cheaper one has a battery pack and AC adapter than the more epensive one doesn't

[north cipher]

Is there any way to run Bruce firmware on raw esp not the m5 stick

[fair summit]

The M5 stick uses an ESP32-PICO-V3-02 module, which has 8MB flash and 2MB PSRAM. The it adds an IMU, an IR transmitter, a microphone, RC, buttons, and an LCD display. Any board using that module or providing that amount of flash and PSRAM + the extras would run the software.

[north cipher]

But main problem is the connections which gpio pin they use

[fair summit]

you can get the schematic of the m5 stick and use the same pins, or change the software

there is nothing magic about the stick

[north cipher]

Hi

[north cipher]

Someone help me in coding

I want to add a menu in esp deauther created by spacehuhn

[north cipher]

<@&617066238840930324>

[charred lintel]

Please do not mass tag.

And if you post the exact details of your project, the code, and any errors you run into, you will probably find someone to help you.
Writing new code from scratch... not likely. This is not a freelancing site.

[north cipher]

Ok

[dusty citrus]

A not so on topic question, but how do you actually reverse an os? There's lot's of resources for random exe/whatever format, but none for like windows?

[full spear]

Hello lads, does anyone have suggestions for relatively simple, ideally useful, hardware tools that could be made in the area of analog music / video creation?

I know very little about the creative process involved in making music using analog electronics and synthesizers, but I do have the technical skills to make something relatively complex.

Some ideas I had

1. convertor between different voltage standards, e.g. converting the 0-10v from an ARP2600 to the 0-5V of a Serge synthesizer, could be made into a digital system with an ESP32 or similar in the middle for some signal processing too
2. analog video box, VGA output and can input control voltages for R G and B to 'paint' onto the screen with outputs for clock pulses for timings with external clocks.

I'm not sure how useful these are or if there are already better solutions out there for these. TIA!

[hollow flint]

For the first idea, I'm pretty sure a voltage divider can serve that purpose. However, probably not in the other direction.

[night crescent]

WE ARE LIVE in BROOKLYN! SHOW AND TELL! https://youtu.be/BpKzSiYt3_A

[night crescent]

ASK AN ENGINEER 11/6/2024 LIVE! https://youtu.be/F9LdUIJsqhs

[late fulcrum]

Reverse in what sense? Replace it with another? Run a binary from something else?

[late fulcrum]

MIDI to CV converter?

[tropic cloud]

What's the over/under on replacing the 50mAh battery in an ipod shuffle with an external 4500mAh battery and it working as expected? (15hr -> 1350hr playback)? Place ur bets. Will follow up when all the parts arrive.

[late fulcrum]

Seems doable if you can find a way to get the wires through. It'll take forever to charge if you use the Shuffle's charger

[tropic cloud]

I'm prepared for disappointment, but u gotta risk it for a biscuit

[late fulcrum]

I'm a big fan of trying stuff, even when it doesn't work out

[full spear]

I was thinking of voltage divider on the input side and then an op amp to get the desired output and offset, also I'd like to buffer the input control voltages as well

[full spear]

Thanks for the recommendation, that seems a bit complex do to well, and also there are plenty of existing cheap good solutions at this point

[brittle condor]

is a usb adapter really the best option for ethernet on rpi0? all i can find that uses the gpio is the ENC28J60 and from what I'm reading it can do max 10mbit, it'd like to get at least 100 for some headroom... anyone ever explored this before?

[vestal pier]

? They have ethernet hats that claim 100M

the waveshare hat one uses USB->ethernet

[somber spindle]

I've used the waveshare one successfully

[brittle condor]

usb it is then...

[tawdry sundial]

anyone had any experience with RFM96W?

and if so, was it easy to set up and did it cause any issues?

did you use an sma or ufl port, what range and antenna etc

[late fulcrum]

I found it easy to set up and use. The 900MHz version with a trivial wire antenna easily worked across a large conference center with lots of competing RF interference.

[tawdry sundial]

Well I aim to use the 433mhz one with a soldered omni on one end, and a yagi on the other and try to get a couple miles

Ambitious,but not impossible imo

[late fulcrum]

For that kind of range, I'd probably opt for an RFM95 (LoRa), which I've gotten over a kilometer range with simple wire antennæ

[north cipher]

r u guys making off grid text system

if somebody knows about spacehuhn deauther and how to add display option pls reply

[north cipher]

@north cipher

[north cipher]

if someone knows pls reply 🙏🙏🙏🙏

[north cipher]

Bhai bta doh

[late fulcrum]

You've mentioned this before. I don't know what a spacehuhn deauther is, and generally "adding a display" to something involves a fair amount of complexity if it wasn't designed to have one originally.

[north cipher]

https://github.com/SpacehuhnTech/esp8266_deauther/tree/v2/esp8266_deauther

[north cipher]

https://github.com/SpacehuhnTech/esp8266_deauther/issues/827

[late fulcrum]

It sounds like it already has a display so I'm not sure what you're looking for.

[north cipher]

How to add another display menu option

[late fulcrum]

The comment chain you posted describes the process pretty well: add another addMenuNode() call for the option you want to add.

[north cipher]

Large no of errors come by doing this I will post them later not near my pc

[fair summit]

There is a discussions area in that repo: https://github.com/SpacehuhnTech/esp8266_deauther/discussions. This is not the best server to ask very specific questions about the subjects you're asking about. Also please don't repeat questions or "bump" your questions after only a short time

[north cipher]

ik nobody replies there posted question there

[charred lintel]

Since there doesn't seem to be anyone familiar with that project around here, it's not likely you will get any replies here either.

[tawdry sundial]

I got the rfm96w:
https://www.adafruit.com/product/3073

should be the same concept though, right?

[lean sky]

And now they are here

[north cipher]

How do u solder chips on board

[lean sky]

small SMD per hand via solderpaste and heatgun and bigger packages via solderiron

If thats what you meant 😅

[north cipher]

void DisplayUI::addMenuNode(Menu* menu, const char* ptr, Menu* next)

can anyone tell wht that means

[thick wind]

Looks like a constructor for a node in a linked list of menu objects?

[late fulcrum]

Yes, same general idea, just a different choice of how the data is packaged

[tawdry sundial]

Nice

I got two rylr 498 modules to transmit live gps and speed telemetry and it works pretty well they just have terrible range and I won't be able to use them with a custom antenna

So rfm96w checks all the boxes for that

(Assuming I get them working)

They are sda scl right, not tx/rx

[late fulcrum]

As the learn page explains https://learn.adafruit.com/adafruit-rfm69hcw-and-rfm96-rfm95-rfm98-lora-packet-padio-breakouts/pinouts, they're SPI peripherals, along with a couple of other signals like reset and interrupt.

So SCK, MISO, MOSI, and CS

[limber dome]

Anybody have an idea what the most powerful ESP 32 to with audio input and SD card reader would be. I want it to run circuit python for 3D charts and log data and interface through HTML page

[solar kindle]

Someone posted this on Mastodon and asked for guesses on what the 3 devices were. I guessed ||an Apple 1 in the back, an Imsai 8080 in front and some sort of Telex to the right||.

[late fulcrum]

I think that "telex" might be an ASR-33

[terse lava]

Table, chair, and a pair of barstools. How'd I do?

[rapid geode]

clean up on aisle 3... :x

[rapid geode]

It reminds me of when i worked for an airline. It printed out ramp times for flights.

[late fulcrum]

I used to have a Flexowriter that had previously been used by an airline for something like that. It was basically an electric typewriter with swing-up typebars, and solenoids under the keys for controlling via serial

https://homepage.cs.uiowa.edu/~jones/flexo/photos/2201Front.JPG

[scarlet herald]

meanwhile building circuitpython nologotech esp32-s3

[scarlet herald]

worked

[night crescent]

Desk of Ladyada - Solar Boosters, Split Supplies, and a Floppsy rev 💾✨🔋 https://youtu.be/yfdQca-_H4o
Floppsy Rev B debugging (floppy pins, power, boot button) & prepping Disk tests. Crafted a split-supply board (-12V throwback to 6.101!) and boosted 5V solar power magic with bq25185 + TPS61023. Also hunting for a modern 5V stepper driver!

[north cipher]

https://tenor.com/view/hey-fellas-butters-stotch-south-park-s22e2-a-priest-and-a-boy-gif-20405240

[potent pike]

howdy

[north cipher]

guys i have a ir receiver with 3 legs the middle one is gnd what are the other 2 in perspective of round side and which is front side of the receiver

[fair summit]

https://cdn-shop.adafruit.com/datasheets/tsop382.pdf Like this?

also see https://learn.adafruit.com/ir-sensor

also we are not all guys here by any means

[hollow flint]

A little off-topic, but this document expires in a couple weeks: https://cdn-blog.adafruit.com/uploads/2024/01/WBENC_Certificate_2023-2024.pdf

[fair summit]

thanks, yes, the paperwork for renewing this is in progress

[north cipher]

sorry sir but that was only a freindly word.....

[scarlet herald]

Super Mario on ESP32-s3 ST7735S?

[restive topaz]

hey, I have a flora board but can’t see the board listed on Arduino IDE 2.3.3. Any help would be greatly appreciated

[thick wind]

Have you added the Adafruit package index to the Additional Boards Manager URLs? It's not a FLORA, but the Arduino IDE setup steps are also relevant in your case.

https://learn.adafruit.com/adafruit-feather-m0-basic-proto/setup

[restive topaz]

this is the board and using ant the Board Manager I added. Is this correct?

[thick wind]

Looks correct. Is that board not being detected by the PC?

[restive topaz]

maybe the board itself has an issue

[thick wind]

Looks like it's listed as "Adafruit FLORA."

[restive topaz]

still not on mine?

[fair summit]

You need to install the appropriate board support package

https://learn.adafruit.com/adafruit-feather-sense/arduino-support-setup#1-bsp-installation-2860583 it's for a different board but just do the first four steps

[charred lintel]

It's not the Arduino avr boards, you need to install the Adafruit avr boards package

[restive topaz]

I’ve installed them and now the board is shown. However I get this error while uploading

[charred lintel]

Is the sketch working?

[restive topaz]

No :/

[charred lintel]

Looking this up, it seems it's not actually an error, just a verbose thing https://github.com/arduino/arduino-ide/issues/2106

Did you get a "done uploading" notification in the lower right corner?

(Make sure you save your sketch locally before you upload)

[restive topaz]

It worked!! Thank you so much!!

[night crescent]

WE ARE LIVE in BROOKLYN! ASK AN ENGINEER! https://youtu.be/PU4mqyXlBHU

[north cipher]

can anyone tell the process of building walkie talkie

[late fulcrum]

What level of detail are you looking for? Normally there's a receiver and transmitter (or shared circuitry that does both, known as a "transceiver"), along with a microphone (and microphone amplifier), speaker (and speaker amplifier), power source, enclosure, and controls. Often all the circuitry is contained on a printed circuit board.

[terse lava]

You sure it isn't first you get two cans and a long string...

[late fulcrum]

You're right, there are different technical approaches available as well

[north cipher]

i know it but how to amplify the audio

[ancient rivet]

it would depend on the source of the audio input. various options here:
https://www.adafruit.com/category/526

[north cipher]

i have tp3110 amplifer

source would be microphone

[ancient rivet]

are you wanting to do something like this?

[mic]-[transmitter]~~~~~~(radio waves)~~~~~~[receiver]-[speaker]

or can you clarify what you mean by walkie talkie?

[north cipher]

we could do 2 way communication with it
with help of arduino any generic 433mhz transmitter and receiver

@ancient rivet

[ancient rivet]

are you seeing an existing project that does this?

[north cipher]

https://youtu.be/SZYwvvh6m-s?si=iucoaCmjsesSMISn

[north cipher]

main problem was amplifying wanna do it better

[ancient rivet]

have you already built it as shown in the video?

they're pretty honest in saying the design ended up being pretty poor quality

they call it a fail @ 9:40

[north cipher]

no i havent build that

[ancient rivet]

do you have something existing? its unclear what audio you are trying to amplify

[north cipher]

the audio receive from the receiver side i want t amplify those frequency

[ancient rivet]

per that linked youtube design, line level audio output is here:

that's what you would connect to an audio amplifier

or could listen with headphones directly (no amp)

[ancient rivet]

this other video linked from the comments is worth watching also, since it discusses why it did not work and what fixed it:
https://www.youtube.com/watch?v=YJ25eQRbhaQ

[unkempt hatch]

Anyone have experience troubleshooting old PCBs? Have a piece of metrology gear from the mid 2000s that is showing a "probe connection error", and I've eliminated the probe and connection cabling up to the PCB as culprits, so the issue is probably somewhere in the PCB.

Was figuring a cracked solder joint but idk how likely that is given this is an intermittently used piece of gear powered by a 9v battery

[late fulcrum]

I'd look for noise on the power supply rails first

[unkempt hatch]

Noise from a battery source?

[late fulcrum]

Noise from the other circuitry

[unkempt hatch]

Ic

Wish Boeing would have gotten it fixed before throwing in the surplus pile

[fierce prawn]

Wait you got it from Boeing?

[unkempt hatch]

Not directly, but it came from Boeing's metrology lab. Even came with a note from the lab asking for it to be sent out for repair... Circa 2017 lol

Can't say I'm surprised they didn't get this quality control device fixed given all the QC issues they seem to have

[whole jacinth]

someplace as big as Boeing has got to have some in-house calibration and maintenance people, so it might be a challenging repair

[unkempt hatch]

It did come with their in-house calibration paperwork.

The notes in the case indicate all the lab did was change the battery and try to reseat the cable going from the probe to the box. Anything that would require opening it up they'd prob send back to mfg

[fervent rain]

I have a tiny 40x22x4mm box (1mm wall). I'm looking for ideas for cool stuff I could integrate into it?

[solar kindle]

membrane keypad on top, tiny microcontroller inside -> macro pad?

[final pasture]

Hi

Is one of these a fake mini-e?

Or are they both real?

I heard there were dumb rgb leds with the same footprint as a mini-e.

So I'm not sure if i'm like, tripping or something

[brittle bison]

Anyone know of a Raspberry Pi hat that controls StepStick style steppers? I don't want the hats with built in.

[lapis anchor]

81°55'50"N 74°37'45"W - check out street view

[final pasture]

WHAT IN THE WORLD LOL

[unkempt hatch]

Looks like that might be part of its internal test

[fierce prawn]

Is it good?

[unkempt hatch]

I dunno. Would need the technical sheet to know if that number is acceptable or not

[unkempt hatch]

Ah nevermind, the device works. The probe tip rides in front of a skid... If the skid isn't in contact with the piece to be measured, the probe tip won't have the right preload and it'll say "pickup error".

Kind of the manual to not mention that.

Makes me wonder why Boeing's lab would say it's broken.

[night crescent]

Desk of Ladyada - Sample Sunday and Solar Soft-Start 🔋🔧🪛 https://youtu.be/3Tz-R3F3EYU

Prototypes are in! Tested our USB/Solar/DC to 5V booster—note: loads 200mA need a workaround, but it’s a win for the price. Also tested cables & a spinning motor for holiday vibes! SOIC debugging clips—perfect for 0.3" SOICs on Metro RP2350 boards!

[dusty citrus]

ok anyone here use anything other then micro controllers

I have a couple duo2 and I have built a base armbian and installed adafruit-blika on them

but I dont fhind much else on how to use it

this has more power then a normal micro controller

as it runs more of a full linux for other parts. and has more storage and ram

[dusty citrus]

https://docs.circuitpython.org/projects/blinka/en/latest/examples.html found what I needed

[frosty glen]

am i losing my mind or is the pinout for the Feather RP2350 got a mismatch between the Stemma/QT port and the i2c pins?

https://cdn-learn.adafruit.com/assets/assets/000/132/290/original/adafruit_products_Artboard_1-100.jpg?1726169571

on the port its showing SDA as GPIO3 and SCL as GPIO2

but on the board itself they are reversed

SDA is GPIO2 and SCL is GPIO3

[charred lintel]

correct (according to schematics and the guide text) is SCL/GPIO3 and SDA/GPIO2 , so the STEMMA QT connector pinout is the wrong one

you can use "Feedback? Corrections?" on the left side of the guide page to submit a report, if you want

[scarlet herald]

esp32-c3 rip board. how work?

[frosty glen]

I just wanted to make sure I wasnt missing something first. Thank you for confirming.

[somber raft]

i just got $100 worth of stuff, mostly equipment. im excited to break into this hobby after a lot of time floundering

[thick wind]

I’m surprised that it’s working at all with the screen pins just wedged into the esp32c3 holes.

[somber raft]

ive designed PCBs in the past, but ive never worked on physical stuff

[scarlet herald]

also worked on esp32s3 supermini by nologo tech

Designed a case for ESP32-S3/C3 with 0.96-inch screen. Q: Why only 3 holes? A: Top-left corner blocked by 5V pin on board; also, ESP32-S3 has LED near BAT. 📷

[candid moss]

Making these "controll points" for my local airsoft field. Glad that we decided to use the Neopixel mini buttons. So cool to use. Actually my first time using any adressable leds

[rapid geode]

ah boo. i thought they were actual buttons got excited for a second. 😛

[late fulcrum]

I suppose it could be an option https://www.adafruit.com/product/3423

[umbral phoenix]

TFW there are board definitions merged, but the boards are not yet commercially available 😦

[tawdry sundial]

Hey yall, so I got an rfm96w module and I am trying to configure it following this page:
https://learn.adafruit.com/adafruit-rfm69hcw-and-rfm96-rfm95-rfm98-lora-packet-padio-breakouts/using-the-rfm69-radio

but when I download the library, there is no examples for rf96

also, should I still follow this wiring schematic?

[umbral phoenix]

@tawdry sundialsame examples as RFM95

https://learn.adafruit.com/adafruit-rfm69hcw-and-rfm96-rfm95-rfm98-lora-packet-padio-breakouts/circuitpython-for-rfm9x-lora

https://github.com/adafruit/Adafruit_CircuitPython_RFM9x/tree/main/examples

docs: https://docs.circuitpython.org/projects/rfm9x/en/latest/

...or are you using Arduino? https://learn.adafruit.com/adafruit-rfm69hcw-and-rfm96-rfm95-rfm98-lora-packet-padio-breakouts/rfm9x-test

[tawdry sundial]

I got it like 30 mins ago and was busy celebrating mb

Will look into those tho

[tawdry sundial]

yes, I am

so I used the Soldered-LORA-RFM96W-Arduino-Library

I have another question - I used the default send receive code, and it works great, with around 10 packets per second (with a single hello as a transmission). Could I somehow squeeze out more speed of it with some packet magic or no?

[late fulcrum]

LoRa has a variety of transmit levels, spreading factors, and so forth. Basically you can trade off range for speed.

[tawdry sundial]

With some setting tweaks?

[ocean terrace]

Anyone have a preferred open source CAD software? I use SolidWorks for work, but it's only licensed for my work computer. I'd like to be able to use it on my personal computer.

[thick wind]

Only one I know of is FreeCAD. I picked it up a couple times before, but I still tend to use Fusion 360 more often despite its closed source.

[weak reef]

I use build123d, but that is a Python framework so that may not fit your needs super well

[late fulcrum]

Yes https://docs.circuitpython.org/projects/rfm9x/en/latest/api.html#adafruit_rfm9x.RFM9x.spreading_factor

[tawdry sundial]

Oh thanks! I've used the native cpp on the arduino ide, will have to look into circuitpython

[late fulcrum]

Oops, I guessed wrong from the CircuitPython links you had pasted above

oops, the links anecdata pasted...

[tawdry sundial]

Is there a way to do it through c plus plus? Surely there has to be

I don't know though, because I am using a non-adafruit library technically

[late fulcrum]

It depends on which library you're using (there are several of them out there), but most of them support those settings

[tawdry sundial]

.

I am currently using this one, so I'll have to look into it

Very impressive for such a small module

[late fulcrum]

Looks like that library has a bunch of examples, including some that set those parameters https://github.com/SolderedElectronics/Soldered-LORA-RFM96W-Arduino-Library/blob/main/examples/LoRaSetSpread/LoRaSetSpread.ino

[tawdry sundial]

was looking exactly at that file too. thanks though! this forum is very helpful

from here I can extract all properties that can be set:
https://github.com/SolderedElectronics/Soldered-LORA-RFM96W-Arduino-Library/blob/main/src/LoRa.cpp

[orchid abyss]

What is the type of foam used for packaging microcontrollers?

[fair summit]

it is conductive

[orchid abyss]

I see them used for protecting the pins but don't know what it's called

[orchid abyss]

Just need something to protect the pins while sitting in a box

[fair summit]

non-conductive foam can cause electrical damage due to static

also called anti-static or ESD

[terse lava]

Usually you can find it under "pink anti static foam" or if you want the black stuff then use black. Some places, often incorrectly, interchange the words like anti-static, ESD, dissipative, or conductive foam.

[tawdry sundial]

another question, so turns out using the soldered lora rfm96w library, it claims it is transmitting at 868Mhz. is that even possible?

[late fulcrum]

Weirdly, I seem to see the black variety of anti-static foam more

[tawdry sundial]

what I notice is that the signal strength dropped significantly

I am not sure the module is even capable of transmitting at that frequency

[late fulcrum]

The "900MHz" modules have a fair amount of range, 868MHz should work fine, but your antenna may need a little tweaking

[tawdry sundial]

it is a 433 Mhz module though

[frank drift]

Hi, I was wondering if anyone could answer a question or two about the adafruit motor featherweight board, the one that controls 4 motors or 2 steppers. I'm trying to get this to work with a raspberry pi 🙃

[terse lava]

And then there is DigiKey confusing everyone with their light blue "Static Dissipative Bags".

[orchid abyss]

Seems like most standard microcontrollers pin headers are 6mm tall?

[fair summit]

you mean DIP size like the standard Arduino 328P?

if you just throw these in a box the pins are not going to get bent unless you mash them together

that particular form factor has been around since the 1960's

[orchid abyss]

https://m.media-amazon.com/images/I/71qTVuDxOrL.jpg

[fair summit]

ah ok, the microcontroller board, not the chip itself

I store mine in a plastic adjustable-driver parts box which I have put copper foil tape or pieces of black conductive foam.

[terse lava]

Funny I was just measuring some yesterday was I was searching Digi-Key for different sized pin headers and I couldn't remember what the "standard" length was vs the shorties and the long ones. Yes, it is about 6-ish mm give or take a quarter depending on manufacturer. EDIT... at least for standard 0.1" (2.54mm) pitch headers. Edit2... and talking about the part that would be pushed into a prototype board for instance, not the side that gets soldered.

[late fulcrum]

Yeah, that module would have very low (if any) output at 868MHz

[tawdry sundial]

gotcha

[late fulcrum]

There should be a way to set the transmit frequency via the library

[orchid abyss]

looks like the closet I could get to is foams for mechanical keyboard

3mm though..

[late fulcrum]

It's under "clean room accessories" https://www.digikey.com/en/products/filter/anti-static-esd-clean-room-accessories/603?s=N4IgjCBcpgHALFUBjKAzAhgGwM4FMAaEAeygG0QBmeWAdgAYBWEI6uygNhAF0iAHAC5QQAZQEAnAJYA7AOYgAvgqIAmciDTEMAWx4KgA

[orchid abyss]

Ah looks like they're also goes by the name "PE foam"

[terse lava]

PE form is the type of closed cell foam used but PE I don't think necessarily means anti-static or dissipative unless made specifically to be that way.

[thick wind]

Ask away; if you ask to ask, we’ll never see your questions haha

[frank drift]

Fair! I was just hoping someone could show me what the pins do/are used for on that particular motor controller. I just want to spin a motor using the raspberry pi instead of Arduinos

[thick wind]

https://learn.adafruit.com/adafruit-stepper-dc-motor-featherwing/pinouts shows the pins used. Specifically, the logic power and I2C data pins (4 wires in total) need to be connected to the pi.

[frank drift]

Ok, so what I don't understand is what exactly do I send to which pins. I have my i2c and logic pins hooked up to my pi

[frank drift]

So I connected my pi's i2c pins to the i2c pins on the controller but when I run i2cdetect I don't see the address

[lapis anchor]

make sure the grounds are connected between the two, too

[frank drift]

Ok, I made sure but I don't know which of the logic pins are power or ground, it doesn't specify in the docs

And when I swapped them around the raspberry pi crashed lol

Ok actually it seems like either my connections were bad or the board itself is damaged because I used a new one and it is being detected now

[dusty citrus]

Any resources/reference for high watt usb power delivery? Not for a charger but for a device that accepts those specificstions

[late fulcrum]

This sort of thing? https://www.adafruit.com/product/5807

[dusty citrus]

you guys can prototype online

https://wokwi.com/

i am using. it

but I want to get adafruit helping make parts for it in the future

fori2c

like the i2c encoder

and some generic code

https://wokwi.com/projects/new/circuitpython-pi-pico

it should be able to be other boards

better demo

https://wokwi.com/projects/309427357921313345

but I think it needs update

[night crescent]

WE ARE LIVE in BROOKLYN! SHOW AND TELL! https://youtu.be/k5fX_Z9T_ag & Link to join to show and share your project! https://streamyard.com/743hfmwyx6

[night crescent]

WE ARE LIVE in BROOKLYN! ASK AN ENGINEER! https://youtu.be/TGTX5DMZ9PA

[terse lava]

In reference to @late fulcrum 's reference, I recently had a transformer (AC to DC) for an LED light fail on me. the transformer outputed 20V for the light. After a bit of searching, basic dedicated transformers that light would have cost me about $14. I decided instead to buy a USB 65W PD charger for $10 and added a "power delivery dummer" board to it (although not Adafruit's version) which works great and cost me less. And later if I retire that light I have a 65W PD charger to use for other things.

[late fulcrum]

The advantages of newer technology, mass production, and flexibility

[ocean terrace]

i will try FreeCAD. I'm not opposed to purchasing a licensed CAD software if it is reasonable and not subscription-based.

[thick wind]

FYI Fusion 360 is free for non-commercial use.

[ocean terrace]

I see. It's downloading now. Thank you!

[spice canopy]

FreeCAD v1.0 got released a few days ago, worth a try too
I haven't tried it yet (I tried earlier version) but it seems like they partially fixed the topology naming issue there was so really worth a try!

[jovial rock]

RealThunder's work on topology was the 'killer app' as far as I am concerned.

[fast ferry]

Ondsel is another take on FreeCAD, where they're trying to improve the user experience.

[weak reef]

Ondsel recently shut down

[burnt tendon]

Yeah, but in open source, a lot of times you either die a hero or you live long enough to see yourself become the villain.

[tawdry sundial]

I wonder, how would I increase the lora's bandwidth using this library?
https://github.com/SolderedElectronics/Soldered-LORA-RFM96W-Arduino-Library

using setbandwidth seems to just freeze the transmission

and is the default bandwitdh of the rfm96w 7.8kHz?

[fast ferry]

oh wow, I hadn't heard. that's a shame. site says it's going offline today.

[jagged axle]

is anyone aware of a service that makes color coded pin headers like https://www.adafruit.com/product/3907 but with customized or at least alternative color layouts?

trying to mix individual segments from these https://www.adafruit.com/product/4154 is turning out to be waaaaay more of a hassle than I expected, and they frequently don't sit evenly with eachother

[dusty citrus]

unless cloud based, a lot of licensing are a lot dumb to circumvent... I'm not suggesting anything

[timid anvil]

Boom boom boom nerf boomerang

[late fulcrum]

I'd have to read the chip documentation to see what that function is doing. In my understanding, LoRa bandwidth is controlled by coding rate and spreading factor, so I'm not quite sure what setSignalBandwidth() is controlling. I don't know if the chip has a "default" bandwidth, that's presumably configured by the library. Are you changing bandwidth in the middle of a transmission? Does it freeze on the send side or the receive side? Note that the receiver would need to be set to match the transmitter.

[late fulcrum]

It appears to be an ordinary black header block with paint or stickers on top. You might be able to paint a header yourself or print up a custom sticker (punching the holes in the sticker might be tedious, I don't know if you could laser cut it or somesuch)

[terse lava]

Generally when I try to use different color headers along the same row, I often plug a longer connector on top of them all to keep them aligned while soldering. Or I use a stack of proto boards to set the headers into with the board on top and solder with the stack keeping the headers more or less aligned. And then of course the other trick is to only use the white headers (the yellow ones are reasonably light colored enough as well) and then I will color the sides of the VCC, 3.3, Bus, etc. pins with red Sharpie, the grounds with black Sharpie, then then others can be colored with blue, green, etc.. If you have access to a lot of different nail polishes in the house, they might work on darker colored headers.

[shadow siren]

I think I have mastered VSC Marketplace with GIT, and I have published an updated extension. I forked the circuitpython ext from Joe Devivo. I fixed the stubs and boards build script, updated the node/npm to V20, fixed some code that needed to be ES6 (with the help of ChatGPT) . What a process to be a publisher on the VSC Marketplace.

It needs testing from other users who use this ext.

[fast ferry]

cool set of skill tree charts for life/maker skills, where you can check stuff off as you build your skill. ~60 domains so far, like electronics, 3D printing, baking, travel, auto repair, amateur radio.

https://github.com/sjpiper145/MakerSkillTree

[hard estuary]

Those are so cool! Todbot and I chatted about them on a recent episode of our podcast

[terse lava]

I really like that it is an eclectic list of skills and not restricted to only techy things such as programming. Where else can I track self-care, dancing, and 3D printing? 👍

[fast ferry]

ha, I didn't notice they appeared on my bluesky timeline because Todbot reposted them

[random saddle]

@obtuse summit Why you invite me to a quiz party? lol

[night crescent]

WE ARE LIVE! Desk of Ladyada - Lots of Motor Drivers this week + RP2350B Metro ⚙️💥🚀🔍

This week on Desk of Ladyada: A look inside North Korean missiles. Motor drivers galore, prototypes for A4988, TMC2209, and TMC2130 are here, plus a detour with ‘Newxie,’ a retro-style 1.14" TFT. Metro RP2350B boards arrived—CircuitPython support coming soon! Also, NEMA-23 stepper fun on The Great Search! https://youtu.be/jCrtF7x_UEQ

[stable dove]

Where do i start with making wearables?

Let's say I'm making a helmet light up

[late fulcrum]

I'll generally start at what I'm trying to accomplish (making a helmet light up) and work backwards. To make it light up, you'll need a source of light. There are a bunch of possibilities (LEDs are a popular choice, but hardly the only one). Do you want the whole thing to glow, or lines or points of light, or something else? Do you want a color? Do you want the color to change? Do you want it to stay light, or fade or blink? The answers to these questions will guide what you need to make it happen.

[dusty citrus]

ok where is there some sample i2c c code for the i2c encoders ?

[fair summit]

which encoders for what language? Are you referring to a previous post?

[dusty citrus]

we where looking at the adafruit i2c rotor encoder and cpp

[fair summit]

https://learn.adafruit.com/adafruit-i2c-qt-rotary-encoder/arduino

worth reading the whole guide

[dusty citrus]

ok

[stable dove]

i want to take a bunch of single color LEDs (pink), in a strip. i found something on amazon, but i have no idea which Adafruit board can power it. i want lines on it to glow, like tentacles going from the front to the back. i also want them to throb like a heartbeat

[dusty citrus]

you would use heartbeat function and map it to a gpio pin tht the led connect to

what board and what language ?

[fair summit]

could you link to the product?

[stable dove]

https://www.amazon.com/gp/product/B08FT2HS7S/ref=sw_img_1?smid=A3EQ9YSF2FB8FU&th=1

[late fulcrum]

Ah, that's 12V strip, so you'll need to come up with a source of 12V

[stable dove]

I'd prefer some sort of rechargeable battery, maybe 4 double As?

Either way, how would I control it to throb?

[stable dove]

Just saw this

Would I need to write one from scratch? I know Python. I have no idea what board, I haven't bought one yet

[vestal pier]

dimming isn't well described, 12V PWM? if so, you'll need to control the 12V with a mosfet or something similar.

[dusty citrus]

you woud have to know what board and what libs you need

are you going arduino or esp32 or pico

alot you have to figure out

are the always on or do you want them to twinkle

what light strips ?

[stable dove]

How do I figure out what board and library would be best for this?

Always on

These light strips

https://www.amazon.com/gp/product/B08FT2HS7S/ref=sw_img_1?smid=A3EQ9YSF2FB8FU&th=1

[stable dove]

What do you mean "isn't well described"?

[late fulcrum]

Pretty much any board can manage it. If you want to use Python, choose a board that supports CircuitPython. Basically you'd use a PWM output to control a transistor that drives the LED strips, then have your code vary the PWM duty cycle to vary the brightness.

It might be worth choosing a board that can operate from a 12V supply, since you'll have a 12V supply anyway to power the LEDs

[stable dove]

I need to research PWM

[late fulcrum]

It's basically turning on and off rapidly, with the proportion of the "on" time variable. Most microcontrollers contain hardware that can do most of the work for you.

[stable dove]

So, essentially I need a setup something like this?

[thick wind]

Plus all the grounds connected together, yes.

Though if this is for a wearable, a portable 12v supply may be hard to source.

[stable dove]

What's a good LED strip to use if I wanted a smaller power supply?

[thick wind]

Ideally, I’d opt for a 5v strip. These can, alongside many development boards, easily be powered by a usb battery bank meant to recharge a phone.

RGB is extremely common at this voltage, specific single color maybe less so. A quick search on Amazon does show some options in pink with usb connectors, which you can use with that sub connector chopped off, or skip the arduino entirely and get a usb light dimmer off of amazon.

Oh wait, you wanted pulsing effects. Maybe not the dimmer then…

[terse lava]

@stable dove You might want to poke around this page for ideas of what kinds of addressible LED products are available. https://www.adafruit.com/category/555 They will all be multicolor but you can of course make them single color. It is just that I don't think there is such thing as addressable single color LEDs for you to be able to do growing tentacles and other animation effects.

[stable dove]

Thank you

[vestal pier]

if you're stuck with 12V, they do make rechargeable higher voltage battery packs but they tend to be bulky

[edgy juniper]

Has the black friday sale been announced yet?

[vestal rapids]

This awesome and super helpful community helped learn so much and get through my first led project. I’m team adafruit for life

[brazen elbow]

Is there any tour for the adafruit facilities?

[fair summit]

Nope, sorry, no tours.

[brazen elbow]

Sad hahaha

[fair summit]

plenty of factory video on youtube, though

[thick wind]

Tempted to joke about applying for a job there, but using that to get a tour seems excessive unless you’re actually looking for work…

[brazen elbow]

Sounds like someone is scheming. 🤣

[hasty wedge]

Just gonna throw my artwork here

Using Krita, fully FOSS

Also, any advice on class D amplifiers making popping sounds when idle? It's driven by a Pico running circuitpy PWM audio

Should I just switch to a Class A instead?

[brazen elbow]

Nice 👍

[late fulcrum]

Yay FOSS, nice drawing. It could be your problem is the signal or power supply: if so, changing to class A wouldn't help.

[gaunt folio]

Could someone tell me what the problem is?

[late fulcrum]

Unfortunately, that library is deprecated: https://github.com/adafruit/Adafruit_Python_DHT

It looks like it supports from .common import DHT11, DHT22, AM2302, read, read_retry but not Raspberry_Pi_Driver

Maybe look at https://github.com/adafruit/Adafruit_CircuitPython_DHT?

[gaunt folio]

I'll test it tomorrow I'll tell you again

[fathom moon]

Does anyone have experience with the bluefruit library? I have it set up on the arduino and am trying to add descriptors but it appears to not be working when I connect to it with my phone looking at it through nrfconnect

[fair summit]

Try the example programs first. Do you mean arduino or circuitpython?

[fathom moon]

This is on Arduino IDE. I looked at the example programs but couldn't find one that uses a custom characteristic set up to notify

This is a snippet from the sketch

[fair summit]

does it work without descriptors?

I think the cccd stuff is going to get set up automatically when you define the characteristics. You don't need to provide those yourself. That's how we do it in CircuitPython

[fair summit]

Here is an example of defining a Heart Rate Monitor service:
https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/custom-hrm

[fathom moon]

Oh interesting. So I am able to write and read correctly but for some reason the android app I am working on is not seeing the items when notify is used.

[fair summit]

Interesting that in the HRM example, NOTIFY, etc. is set by calls (SetProperties()) rather than in the constructor.

I have not used the Android BLE impl at all, really.

I worked on the CPy implementation

[fathom moon]

Now my idea is to have the app request from the arduino the current values of the variables it can modify on its side so I was writing to a characteristic and then the arduino would write back to it and notify the tablet that there is new data but maybe that is not the right way to do it?

My thought was that if I was to use write where it would use a response then there may be instances where it may not instantly give a response, so to asynchronously get the information I could use Notify on the characteristic to have the tablet check for updates on the characteristic instead of a constant read for new info

[fair summit]

what app are you using?

the app has to handle the notification

[fathom moon]

Well to check the ble service I am using nrfconnect, but I am currently writing my own Android App through Android Studio to control specific devices in a room

[fair summit]

you could try the HRM example and see if you are getting notifications from it. It does do notifications.

there may well be an HRM client example in Android Studio or on Github, etc.

[fathom moon]

What would make more sense to do? Write to the characteristic and have the arduino give a response or to use notify to let the tablet know when to read the characteristic? Or, do I split it up into a couple different characteristics where one is to request parameters and another is to read them?

This is my output from nrf which shows that the notifications are being enabled correctly, but maybe I'm thinking about this the wrong way. I was originally assuming that if I was to have a characteristics with write, read, and notify, when writing to the characteristic it would notify the device of a change and I could read the new value from the characteristic. It seems however that notify works similar to write though where it adds a value to the characteristic and my code could specifically look for that data

[night crescent]

WE ARE LIVE in BROOKLYN! SHOW AND TELL! https://youtu.be/Vqy7q1d0_ds

[night crescent]

WE ARE LIVE in BROOKLYN! ASK AN ENGINEER! https://youtu.be/isKKV3FZ_w0

[nimble kettle]

Hi! I'm little confused, does this module provide UART MIDI or not?
https://www.adafruit.com/product/1381#technical-details

[late fulcrum]

It does not. You could add that functionality with a microcontroller.

[nimble kettle]

but pins are connected?

[tawdry sundial]

So I've been using the rfm96w for a while now. I am very happy with it's performance, so here is my question. The default transmission power is 0.1W afaik. Could I boost that to 5w+ with a 433mhz power amplifier? If so, what precautions do I need to take?

[nimble kettle]

so unlicensed transmission is only allowed with transmitters with up to 500 mW output power and undetectable antenna
legalwise

technicaly i can’t really see a problem

[tawdry sundial]

It will be operated under a ham radio license

[late fulcrum]

I'm not sure what you mean. I don't think the chip has an asynchronous serial port.

[velvet pelican]

Hey all i am wondering if someone will be able to identify a 2 pole pin connector i have. Looks similar to a jst2 but not quite the same. The only thing i can find stamped on it it lbs1

If anyone knows what one this is it would be greatly appreciated

[hollow flint]

Try following the instructions within this YouTube video: https://www.youtube.com/watch?v=Mf_rMngXQ04

[velvet pelican]

Awesome thanks for that info i will see what i can figure out

[late fulcrum]

What's the pin spacing? Looks like it might be an ordinary 0.1" connector (lots of manufacturers make those)

[terse lion]

Hello there yall.

I have a feeling this question might have been asked here and I am just not aware, but is there any way I can get Pi hats working with other devices?

for context, I have a Pi sense hat but no Pi, and I would be interested in perhaps obtaining something that would allow me to access pi gpio on pc or laptops

[thick wind]

Most pc motherboards don’t have any gpio pins exposed the way a Pi would. The ones that do have any gpio certainly don’t have enough for full compatibility with the sense hat.

For some hats that simply use a single spi or i2c bus, you could make a case for something like https://www.adafruit.com/product/2264 or https://www.adafruit.com/product/4471, but for something like the sense hat that basically needs the full header’s worth of pins, building a bridge capable of utilizing all of it will either require some development work or cost as much as a small pi itself.

All things considered, it might just be more worthwhile to buy a pi zero 2W and try that out.

[velvet pelican]

Pin spacing is 2mm plug width is 6mm and depth is 11mm. Its an led light for a whirlpool fridge if that helps.

@late fulcrum

I attempted to navigate through digikey but did not find the right connector myself. But that was a short search of about an hour after deep diving and not finding it before coming and asking here. Would be great if they would stamp the connectors with a model/part number

[terse lion]

Thx for the tips man, I was actually looking into getting a pi zero 2w but couldn't find it in stock without pre soldered pins or an alternative with better io

[ocean terrace]

anxiously waiting for adabox

https://tenor.com/view/waiting-intensifies-zootopia-intensifies-waiting-impatient-gif-9739240072909568285

[terse lion]

would something like this help?
https://www.adafruit.com/product/3945

[thick wind]

Not unless you already have a compatible pi zero.