Arduino Led Matrix 8x7 WS2811

Introduction

Make a 7x8 led matrix using WS2811 led strips.

Theory

Wiring

Be careful to wire +5V to +5V (I broke one led). Soldering the leds is manageable: add the solder to both the led connector and to the wire, the attach the wire to the led connector and warm it using the soldering iron.

• 

  Programming. No +5V is needed.

• 

  Running only.

Programming

• See the gist file for a sample code to show some letters: https://gist.github.com/markkuleino/65c1d48b05597e7f92b15a47b3d49435
• The 7x8 font https://github.com/ileskanRepot/Arduino_RGB_WS2811_8_leds/blob/master/wave/wave.c/letters.h
• Turn the bits on randomly https://gist.github.com/markkuleino/294b4248aa3d154f179ef8b6f625ac40.js

Debugging

<syntaxhighlighting lang="C"> void setup() {

 Serial.begin(9600); // open the serial port at 9600 bps:

}

Serial.print(); </syntaxhighlighting>