M5Stack Unit HEX + Cardputer 1.1 - 37 RGB LED Effects Test Testing M5Stack Unit HEX (37 SK6812 RGB LEDs) connected to M5Stack Cardputer v1.1 via Grove Port A. Five built-in effects controlled from the keyboard: solid colors (red, green, blue), rainbow animation, and breathing pulse. Brightness adjustable from 5 to 255. Powered by FastLED library on ESP32-S3. Built with PlatformIO + Arduino framework))) #m5stack #cardputer #fastled #sk6812 #esp32s3