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reset logo
led grid
8×8 / 16×8 / 32×8 LED matrix sandbox. MAX7219 byte framing preview.
gamepad tester
live USB HID gamepad state, any button count, raw Gamepad API dump.
waveloop pedal
unified diagnostic for the combined pedal: HID buttons, MAX7219 matrix, TM1637 4-digit display, NeoPixel.
handoff.json
spec for the serial ↔ MAX7219 bridge. drop the URL into sibling agents.