Using a GEMMA microcontroller with a MMA8451 accelerometer to drive a WS2812 LED pixel strip.
30/11/18 DEVELOPMENT SUSPENDED
The GEMMA V2 I was using to develop this project got bricked a couple of weeks back trying to upload the latest revision of the code - it seems the V2 doesn't have sufficient capacity to hold enough code to both drive the LED strip and read the accelerometer.
As such, I have switched to using an Arduino Micro instead. The Micro code is in a separate repository.