The slightly cheaper WS2812 or SK6812 strips, called NeoPixels by Adafruit, are trickier to drive and are not compatible with this program as it stands. AliExpress: SK9822 (Similar APA102) Smart RGB Led Pixel Strip.Pimoroni: Flexible RGB LED Strip (DotStar/APA102/SK9822 compatible).Adafruit: 30 LED/m, 60 LED/m and 144 LED/m on both white and black flex PCB.I've tested the program with a 1-metre strip with 30 LEDs, and a half-metre strip with 72 LEDs. The strips typically come in multiples of 1 metre, with either 30, 60, or 144 LEDs per metre. I've tested it on an Arduino Uno and a ATSAMD21-based Adafruit QT‑Py M0 board. You can drive these using the standard Arduino SPI library, and so the program should run on any Arduino-compatible board without modification. This program will work with DotStar strips, which use either APA102 or SK9822 serial-controlled RGB LEDs. This article describes a new approach to driving DotStar RGB LED strips, by defining a single space-time function describing the display to be generated:Ī DotStar RGB LED strip controlled by this program running on an Adafruit QT-Py M0 board. Controlling RGB LED Strips with a Single Function
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