@nuncio
Something on raspberrypi.stackexchange.com (https://bityl.co/JG5V) indicates that #GPIO pins in input mode only care about not exceeding the 3.3v limit. I don't know how authoritative that is, though.
#RaspberryPi

@jernej__s @damnbear there are several of those since the @Raspberry_Pi since Version 2 has a 40-pin #GPIO which non-coincidentially has the same pin spacing and even before, I also do fondly remember those #IDE cables...

https://www.berrybase.de/gpio-extension/verlaengerungskabel-40-pin-fuer-raspberry-pi-rainbow

Meh. What's the #impedance of a #RaspberryPi #GPIO pin in input mode? Is it safe for a high value from another pin in output mode to sink directly to it?

I haven't found this discussed anywhere. It 𝘭𝘰𝘰𝘬𝘴 as though a pin in input mode has quite a high 𝑍 and sinks very little current, but I don't want to experiment just in case that's an invalid conclusion. 😔🤔

So, I'm liking #𝚙𝚒𝚐𝚙𝚒𝚘 for some of its capabilities, but not so much other aspects. Like the bits of incorrect #documentation (𝘦.𝘨., a #dutycycle is a 𝗽𝗲𝗿𝗰𝗲𝗻𝘁𝗮𝗴𝗲, not a range), the lack of examples, and (most of all) the apparent inability to have multiple concurrent C/API processes accessing the #GPIO because #𝚐𝚙𝚒𝚘𝙸𝚗𝚒𝚝𝚒𝚊𝚕𝚒𝚜𝚎() starts the #𝚙𝚒𝚐𝚙𝚒𝚘𝚍 dæmon and fails if it's already running.

Where can a n00b #Pi GPIO hacker ask about these things?

#Nerdquestion
#Raspberry #pigpio library

Looking for code for

2-key rollover for n keys (n buttons connected to separate GPIO pins)

Looking for #Python code to detect two-button-presses on (let's say) 4 buttons, in general detect "2-key rollover" on n GPIO pins.

( https://en.wikipedia.org/wiki/Key_rollover : "Key rollover is the ability of a computer [keyboard] to correctly handle several simultaneous keystrokes.")

For 2 buttons, this is easy.

#2KeyRollover
#nKeyRollover
#pigpio
#Raspberry
#GPIO
#Python

#USB #GPIO https://youtu.be/Rt5xtIyxgco
#adafruit #MCP2221A #FT232H

#USB #GPIO https://youtu.be/Rt5xtIyxgco

#USB #GPIO https://youtu.be/Rt5xtIyxgco

Sitting in my little office with the new #RaspberryPi Stack, its 2 fans running constantly I decided to add a controller to turn them on and off based upon temperature. In a bid to play with #gpio I wrote a #python script to monitor the temp and set the fan on and off (I know you CAN do this in the boot config). Having got this working and all #Pis announcing their temperature via #MQTT a mod is required to control the fan based upon local and remote temp of systems in the stack.

So the #RaspberryPi 3B+ that handles all the bots and web pages and basically everything around here had a very rare lockup the other day and I thought about getting a wifi outlet for it so I could remotely power cycle it in these situations....

but then realized I had my little #ESP32 swarm waiting around. So a little header soldering to the Pi3's RST hole and some header soldering to the #WEMOS S2 Mini plus a quick #Arduino IDE fire-up and ta-da!

now there's a little purple dude running a webserver just waiting on an URL to power up a PIN and create the short that reboots the Pi when needed.

Bonus: it's powered by the Pi itself because even when it locks up, the USB port is alive

Double Bonus: I got to test out the 3D case I whipped up in #FreeCAD (one with #GPIO cutouts on the lid) and it fits pretty damn well!

Here's a picture of the setup; you can see the other Pi boxes from the army tangled up in the #Narnia hell that is the web of cables on its shelf

Not a bad little Sunday afternoon project

#SBC with a #GPIO
Yo-ho-ho and a bottle of rum.
My new computer: #Odroid N2+ with the easy-to-use Ubuntu MATE.
Flash your Micro-SD or eMMC with the Balena Etcher or the Linux/UNIX command 'dd'.

My Nezha-D1 arrived the other day and I've been having a lot of fun with it!

#yocto #riscv #allwinner #gpio

http://twoerner.blogspot.com/2023/01/allwinner-nezha-d1.html

@rena2019 @gehrke_test kann ich nur bekräftigen. Fragen kostet nichts.

Ich habe in den 80ern mit kosmos x2000 und später x4000 angefangen, dann viele Jahre eher am PC programmiert und bin erst vor ca. 5 Jahren über #Raspberry und #gpio wieder ein bisschen in die Elektronikbastelei gerutscht. Und seit dem Weihnachtsurlaub #esp8266 und c++ angefangen. Und jetzt angefixt 😁

Why we didn’t add the I2C interface to the GGreg20_V3 module
https://iot-devices.com.ua/en/why-we-didnt-add-the-i2c-interface-to-the-ggreg20_v3-module/
#oldgoodstory #ggreg20_v3 #geigercounter #i2c #iot #diy #compatibility #gpio

Watch "VisionFive 2: RISC-V Quad Core Low Cost SBC" on YouTube #VisionFive2 #riscv #gpio #python #ubuntu #raspberrpi #sbc
https://youtu.be/ykKnc86UtXg

With getting the proxy setup, I installed Ubuntu Server on the Pi, and with a fresh start like that I also wrote a script to control the fan I have on the Pi. It's written in #rust and is a simple "any temp sensors above temp limit? fan on. else fan off" but its also more good practice for writing systemd units and learning more of *how* linux OSs and services work, and also logging best practices, and all that good stuff!

#rustlang #script #gpio

My first attempt coding Kotlin Native for Raspberry Pi was a success! 💃
The next step is writing and reading from GPIO.

#Kotlin #KotlinNative #RaspberryPi #GPIO

➕ 1️⃣ for all the #sbc that has at least labeled numbers to the #gpio pins.

Commande lumière pour percussion (DMX/Raspberry pi)

J'ai un petit groupe de musique dans lequel je fais de la percussion avec petit set Cajon + accessoires, pour faire une mini batterie transportable à vélo... Nous sommes amateurs ; j'ai rejoint le groupe en cours de route, et ils avaient collectivement acheté la t

https://david.mercereau.info/commande-lumiere-pour-percussion-dmx-raspberry-pi/

#Doityourself #Informatique #cajon #dmx #gpio #musique #percussion #python #raspberry-pi

Hey everyone! #FlipperZero is back in stock for the US at https://shop.flipperzero.one

Get yours before they are gone!

If you don't know, these are learning tools related to sub-ghz radio and #IR. They let you mess with things like #rfid, #NFC, #rfcontrols and more. They have #gpio pins for expandability and are entirely #opensource! These are really cool tools designed to teach you about radio frequencies, #pentesting, and more!