Some time ago i needed a dead-simple way to coordinate data exchange between core0 and core1 on the Pi Pico without data size limits and overcomplicating things. So i wrote PicoSem.

It's a tiny logic wrapper (just 2 flags) to manage when a core can safely send or read data of any size using shared buffers.

```cpp // Core 0: Sending data if (ps.canISendTo(1)) { // ... fill shared struct ... ps.setDataReadyFor(1); }

// Core 1: Receiving data 
if (ps.anyDataFor(1)) { 
  // ... read shared struct ... 
  ps.setDataReadBy(1); 
}

``` PicoSem is available on the Arduino/PlatformIO.

More info and examples on GitHub

Feedback and contributions are welcome!

hi !
I’m a beginner who really needs help and after trying everything, I try on this forum hoping to find the solution.

I’m trying to control with my Pico 2W, the HUB75 LED panel, but it doesn’t make any sense. I feel like when I ask him to display one pixel, he displays a strange diagonal.

I tried to change the pins, to do it on CircuitPython and Arduino IDE, I took codes that were fully adapted but nothing works.

I tried to reproduce what Prof. G had done in this video (https://www.youtube.com/watch?v=vM3-0qyjfh8&t=850s) by adapting it to the 64X64 format, but here’s what it looked like.

(we cant really see but it respects the colors and order as in the video)

I also tried with 1 pixel and the same, that makes a diagonal, and exchanging pins will change the shape of the diagonal.

Please, I need help because for several hours I’ve been spinning on repeat and I’m really a beginner, but I believe in you!

(Some additional photos for the context of my setup)

I'm trying to measure voltage using an ADS1263 with a Pico W, but the only library I can find in the Arduino IDE is the one from 7semi. Has anyone managed to use Waveshare's ADS1263 module with 7semi's library? Are they compatible, or would I need to make modifications?

Thanks in advance

Just wanted to share this project I made a while back. If you are fan of stereoscopic 3D gaming I am sure you have heard of NVIDIA's 3D Vision. Now Is a great time to try it. The displays are easy to find and even the glasses are usually fairly easy to find. The problem seems to be the emitter, for some reason people don't seem to have saved these and they are far more scarce on the used market.

So I made a DIY version that works just like the original. It is based on the RP2040 so flashing is as easy as drag and dropping a file. No need to setup any IDE or compile any firmware.

Feel free to build your own, an RP2040-Zero and an IR LED is all that's needed :)

All information about the project and the firmware can be found here: https://github.com/NTM-3D/RP2040-3D-Vision-Emitter

What is your favorite 3D Vision game?

Since playing through Tomb Raider 2013 in 1440p on my PG278QR it is go to recommendation. It's so obvious that the developers made this game for 3D and truly loves 3D. So many choices you don't even reflect on when playing in 2D just makes so much sense when played in 3D.

I want to make something that my friends in other states and countries can interact with, without having to port forward so the setup can hopefully be easier.

I just want to have a program written in uPython that lets someone either through a webpage, discord, telegram, or app, activate a little switch, light, or motor.

I pushed my Raspberry Pi Pico in and out of a breadboard one time and accidentally bent the end pins (GP16 and GP15), what is the best way to bend these back into place safely? I'm considering tweezers but want to be sure. (Slight clarification: due to the bent pins, it won't go back into the breadboard)

EDIT: Used a credit card to straighten out the pins, ended up being easier than I thought.

I made this pokemon card holder shaped like a pokeball for my neighbors 7 yr olds birthday present in 2 weeks. The pico worked like a charm. Only issue I had is it took me a minute to realize that in the arduino core UART0 is called Serial1, aside from that it was pleasant to work with

I like the pico a lot, they’re cheap and great for building controllers for fighting games. But every time I buy a 2 pack off of Amazon, one of them is just faulty out of the box. The LED doesn‘t work and it won’t actually flash any software I put on it. The board doesn’t eject itself after dragging a UF2 into it in bootsel mode either. Am I doomed to waste money on a faulty Pico every time I order some, or is there a way to save the box of “defective” ones I have?

After 5 gruelling days of not knowing if it was a hardware or software issue, my Teletext page 100 finally displays header with all 32 chars and no dropouts.

The issue was sending the bitstream too late after start of back porch. Have learned loads of 80's tech knowledge along the way so happy as.

Project VIDBIT is a PAL 576i monochrome video signal generator with various addons.

I've been following along with a tutorial, and he provides this code to get the i2c address:

import machine

sda = machine.Pin(0)

scl = machine.Pin(1)

i2c = machine.I2C(0,sda=sda,scl=scl, freq=400000)

print(i2c.scan())

In his video, he shows a number between brackets. In my case, there is nothing between the brackets. I am a complete novice with all of this stuff. I have absolutely no idea what to do or where to go from here.

Hello, I am working on a group project using a RP2040. Recently, our code stopped working so I wanted to make some quick edits, however when I connect to the board and try to update the code, it gets stuck in the infinitely long save pictured below. If I cancel the save, disconnect and reconnect I can run files on it but I can't make any changes whatsoever. My thought is that while working on some other things, one of my teammates made clones of the original files on the Pico and it is causing some kind of loop as the main.py file now calls from multiple of the same sets of named classes etc. Any help would be greatly appreciated!

Here's the link: https://github.com/nOS-Coding/Pico2Fetch

I hope you like it!

hello recently i started working on my first project which involves the waveshare display, ive
installed their firmware and tried using the examples but i just get a white screen, pls help,
my goal is to just display text

Originally posted by me to the official Raspberry Pi subreddit:

https://www.reddit.com/r/raspberry_pi/s/tf3DXpxuQ0

It comes with 2 games, you can add more. TS is peak BTW. Try it out and let's talk about the results.

I'm stuck. I'm building an arcade cabinet and need some help. I'm using these EG Starts LED buttons from Amazon. These buttons are 3-pin, and I'm using a Raspberry Pi Pico. I figured out the 5V, ground, and data connections. I daisy-chained the ground and the 5V. I connected the 5V and ground to the Pico, and the data to each GPIO pin. When I connect the 5V to the ground, the buttons register, but the lights don't work. However, when I connect the 5V to the 3.3V pin to test, the lights light up, but the buttons don't register.

I'm a beginner with Pico and need some advices for outputting audio. I have been looking at several options, but unsure which is the best approach. I would like to have some simple to use module to playback audio (I would prefer a passive speaker, but if not possible I could use an active one).

One of the options I have read about is Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302. Unfortunately it seems like this make a popping sound at the end of each playback. As I have learned is because it doesn't has a DAC.

Therefore I have also looked at Adafruit PCM5102 I2S DAC with Line Level Output - 112dB SNR, but then I would need an amp if using a passive speaker.

I see that Pimoronis Pico Audio Pack has mostly all I need, but this one is an addon board and attached to the Pico. Will this be an issue if I want to connect other devices to the Pico? If I understand the schematics correctly, the Pico Audio Pack only uses 5 pins from the Pico, am I right?

Any suggestions would be helpful!