Control WS2812 LEDs with a Raspberry Pi
Conclusions
The WS2812 LED is a small technical masterpiece. If you combine many elements to create a matrix, you can realize really great projects. For example, you could display multicolored tickers or even small video animations with these modules.
In the project in this article, I used an 8x8 matrix, but the matrix modules are also available in larger sizes, and several can be connected together.
Infos
- WS2812 data sheet: https://cdn-shop.adafruit.com/datasheets/WS2812.pdf
- 8x8 LED matrix: https://www.aliexpress.com/item/4001073507941.html
- SN74HC125: https://www.mouser.com/productdetail/texas-instruments/sn74hc125d?qs=gqbMQSs93zP7llIjTmJMVw%3D%3D
- PCB for SMD module: https://www.aliexpress.com/item/32952881938.html
- 3D printer files and code: ftp://ftp.linux-magazine.com/pub/listings/linux-magazine.com/240/
- Raspberry Pi OS download: https://downloads.raspberrypi.org/raspbian_latest
- LED library: https://github.com/jgarff/rpi_ws281x
- Java wrapper: https://github.com/rpi-ws281x/rpi-ws281x-java
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