Summary

This thing is inspired by Magformers LED Neon set which has similar RGB lights, but my thing offers more light modes such as rainbows, stars, traffic lights, and beacons.

https://youtu.be/5MLX1hc8Jz4

Module is based on ATTiny85 and programmable from Arduino IDE. It can work up to 5 hours from 600mAh Lithium battery inside.

Case and diffuser module sources: https://cad.onshape.com/documents/db0b892b322747d7bc535bdc/v/fcce0f163beeab5202f6b8d5
Schematics and PCB: https://easyeda.com/editor#id=d2c35121a0d542c1a6841c18a09a0e9e|6a5e1ef72c0a42daac36ed27372bff6e
Firmware: https://github.com/grafalex82/MagformersLED
Detailed description (in Russian) - https://habr.com/post/435198/