- flash-sketch.sh: compile + flash a sketch dir onto a board's MCU over adb
(push → arduino-cli compile with TMPDIR=/tmp → arduino-flash @ 0x80F0000).
Defaults to sketches/matrix_rain; includes a fleet loop over adb devices.
DRYs up the recipe and makes "set the board default" one command.
- Designate matrix_rain as the boot animation boards ship with (the flashed
MCU sketch persists across power cycles). Documented in the sketches README
+ parent Files list.
Flashed matrix_rain to the board via the helper (821 bytes, verified E2E).
Co-Authored-By: Claude Opus 4.8 <[email protected]>
