Esp32sim
A Rust emulator that boots unmodified ESP32-S3 firmware, Wi-Fi included
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DroidPutter
Run Cardputer apps on a bare ESP32-S3, with your Android phone as the screen
A few dollars of ESP32-S3 and an OTG cable stand in for the Cardputer handheld, because the phone supplies the display, keyboard, GPS and flasher.
DroidPutter is an Android app and a small firmware shim that let open-source M5Stack Cardputer apps run on a plain ESP32-S3 board plugged into a phone over USB-OTG. The phone becomes the display, a soft version of the Cardputer's 4x14 key matrix, and a GPS source. Apps are rebuilt on demand from their GitHub source, then flashed from the phone with MD5 verification. It needs Android 8 or later and a board with native USB-Serial/JTAG; other chips and UART bridges are refused. MIT licensed, 182 commits, with a v0.0.1 APK on GitHub Releases.
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