BOM: Seed Studio XIAO RP2040 1X, Mechanical key switches 6X, Rotary encoder with push switch 1X, SK6812 Mini RGB LED 2X, PCB (custom) 1X, Soldering iron 1X, Solder wire 1X, Flux 1x, Tweezers 1x, 3d Printed case (all layers) 1x, Rubber Feet 4x, Screws 4x, Rotary encoder knob 1x, Key caps 4x.