current revision video
Protect the Universe with an Arduino Nano, qty 84 WS2812 NeoPixel LEDs, a DFPlayer module, and recycled household junk.
The repulsor is powered with an 800mAHr LiPO battery. Always fuse the main circuit, and branch protect multiple module projects for ease of troubleshooting later.
A 15W audio amp and a repurposed iHome player (only reused the enclosure and speakers) adds some kick to the sound effects.