EasyRainbowHat Android Things with Kotlin Utility: https://github.com/jacklt/EasyRainbowHat/blob/master/app/src/main/java/it/justonetouch/thingtest/EasyRainbowHat.kt Example: https://github.com/jacklt/EasyRainbowHat/blob/master/app/src/main/java/it/justonetouch/thingtest/MainActivity.kt Preview