A custom 4x3 macropad (12 keys) with a rotary encoder and RGB backlighting, powered by the Seeed XIAO RP2040 microcontroller. Features: - 4x3 mechanical key matrix (Cherry MX compatible) - Rotary encoder with push button for volume/scrolling - 8x SK6812 NeoPixel RGB LEDs for backlighting - Seeed XIAO RP2040 microcontroller - KMK firmware (CircuitPython-based) - Custom laser-cut acrylic case (sandwich mount) I designed this in a 5-hour speedrun session, starting from zero PCB experience. Ran full DRC validation with zero errors. The PCB is under 100mm x 100mm and ready for manufacturing. GitHub PR: https://github.com/hackclub/hackpad/pull/726