CARDPUTER APPS ON ANDROID / ESP32 APPLICATION
Droidputer
Run open-source Cardputer apps on Android: plug an ESP32-S3 over USB-OTG and the phone is the screen, keyboard, GPS and flasher. Apps are rebuilt on demand from GitHub against a display/keyboard shim.
About this project
About this project
An Android phone with an ESP32-S3 on an OTG cable takes the place of a Cardputer: the board runs the program, the phone supplies screen, a 4x14 keyboard, GPS and the flasher. Open-source Cardputer apps are recompiled unchanged against a patched M5GFX/M5Cardputer shim, which tees every pixel over the S3's native USB-Serial/JTAG and merges the phone's key and NMEA frames back into the app; apps drawing with TFT_eSPI get a second shim. The phone triggers the build, GitHub Actions runs it behind a small proxy, and the phone flashes the four parts itself. 15 apps are verified on a bare ESP32-S3 devkit; 44 of 79 app/target pairs build, 30 are refused by design, 5 wait for arduino-esp32 3.x. It needs Android 8+ with USB-OTG and the board's native USB port - a CH343 or CH9102 bridge never carries the link.
From the README
From the README
- Link
- The ESP32-S3 runs the app; the phone adds screen, keys, location and a flasher.
- Firmware
- 15 Cardputer apps are verified on a bare ESP32-S3 devkit
- Build
- Builds happen on GitHub Actions through a small proxy
- Limit
- a CH9102 or CH343 bridge shows up as "USB Single Serial" and never carries the link
- Memory
- 240x135 x 2 bytes = 64,800 B
Hardware
Native board: M5Stack Cardputer
Boards: ESP32-S3 M5Stack Cardputer
ESP32-S3 / M5Stack Cardputer. Verify the exact board revision, wiring and power requirements in the upstream build guide.
Media credit & rights
Upstream project media · rights remain with its owner · Credit: fcavalcantirj
Screenshots from the upstream README. Code and firmware were not executed. License notices are included.
View original source ↗ Copyright & removal · Reviewed
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Repository links do not imply author endorsement or verified hardware compatibility. Check the upstream safety guidance before powering or flashing a build.