rpi_ws281x VS audio-reactive-led-strip

Connect the led strip data pin to an available Io pin on the pi, connect the strips and to pi gnd pin and to a 5V power supply gnd pin, and connect the strips + to the 5V power supply.

Then use a library on the pi, for example this: https://github.com/jgarff/rpi_ws281x

I'm sorry, but bit banging WS2812 on that hardware is stupid. Find some peripheral that you can use to output WS2812 bitstreams, and use that. For example, for the Raspberry Pi there is a library at https://github.com/jgarff/rpi_ws281x that can use either PWM, PCM or SPI to do this. I know you're dealing with a different CPU, but this should give you ideas about how you can use its peripherals. The data sheet is available: https://github.com/milkv-duo/duo-files/blob/main/hardware/CV1800B/CV1800B-CV1801B-Preliminary-Datasheet-full-en.pdf

E.g.: https://github.com/jgarff/rpi_ws281x

The library it's based on specifically notes SPI usage in the readme, and details on how to use (that's where I got the steps that I double-checked in the OP)

Regarding the error though, it sounds like there are a bunch of slight cpu variations that aren’t all clearly defined. I can’t reproduce it myself (guess I have an older board). But there’s a solution suggested by the maintainer on a GitHub issue here https://github.com/jgarff/rpi_ws281x/issues/483 so I’d suggest trying that out first.

You can run them direct off gpio but if xlights is your “end game” the falcon pi cap is more inline with the ecosystem of xlights, falcon player and a overall Christmas light display end game where gpio pins is more of a “electronics project” https://github.com/jgarff/rpi_ws281x

The LEDs are controlled via the SPI interface of the Raspberry Pi. The rpi_ws281x library is used to manage the ring from python code. The library also provides the possibility to control LEDs via PWM or PCM, however this either disables either analog or digital audio output, which is quite disadvantageous for a music server. On a Raspberry Pi 4, there is one thing to look out for: SPI requires a stable clock, and the Pi 4 throttles itself by default. This can be avoided by adding core_freq_min=500 to /boot/config.txt. Raveberry takes care of this during install if you enable LED visualization.

I have one too, when I plug it in the lights just stay white, unless its losing power in which they flash red. I wanted program them with python and I found a module to use but it wasn't really working. There was a script the came with the module that made them change color, but I haven't been able to write any scripts with the module myself. the module is called rpi_ws281x. You can install it using pip for python and I saw more about other programming languages too. for the button I was able to get that working as power button with this tutorial. Hope this helps.

[2] https://github.com/jgarff/rpi_ws281x

Thanks for the pointers! After digging a bit more, I found https://github.com/scottlawsonbc/audio-reactive-led-strip which looks like an excellent end-to-end setup that's also easy to explore further from. Can't wait to sink lots of hours into it :D

So I do think it's pretty well accepted that coding in python is easier for new programmers than coding in Arduino/C/C++. I don't have any experience working with the seeduino boards, and I don't have any experience doing sound reactive projects, but this project on GitHub really looks like it's exactly what you're looking for if you are okay with moving the the RPi: https://github.com/scottlawsonbc/audio-reactive-led-strip

A custom version of "Device Mic" was implemented taking code from here but need to be improved. Hope you like it :)

Straight to the point. I want to integrate this: Music Reactive LED's into my car. I plan for everything to be behind the dash. I am adept with soldering, basic IT and small electronics (having made my own button box and peripheral input converter). However these seems a bit more advanced purely because of my requirements.

LedFX sounds great if you want to control many different strips in a network. For a standalone Raspberry Pi, there is also this project, which I meant to try out for some time but did not come around to. It has a lot more features than my implementation.

In order to use audio visualization with speakers you can use this library that someone made. https://github.com/scottlawsonbc/audio-reactive-led-strip From what I’m seeing, in order to use audio from your pc/headphones instead of from your speakers you have to program it yourself. You’ll notice they do something similar in the microphone.py but it uses your microphone from your pc. Instead of the microphone it just needs to use the input audio. I was going to modify this library to do that but it needs a esp2866 which I currently don’t have.