v0.2.1 — sideload APK
Hobby-beta APK (debug-signed, not Play Store). No Flutter SDK.
Defaults match the MILUKA Aristo D2 head: 109 LEDs, GPIO 5. Do not pair DarkroomTimer in Android Bluetooth settings — hold Focus 3 seconds → Einstellungen → Geräte suchen.
Copy onto an Android 8+ phone from Debian, open the APK, allow Nearby devices.
Flash the head first: https://github.com/Draganito/darkroom-enlarger-head/releases/tag/v0.2.1