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GB Printer emulator

GB Printer emulator based on ESP32.

Configuration and build

Configuration used for development:

  • FireBeetle 2 ESP32-E IoT
  • ESP-IDF v5.3-dev-3499-g636ff35b52
  • Linux Mint 21.3.
idf.py build

Pinout

Wire color may vary.

  • pin 4 - Tx - yellow
  • pin 12 - Rx - green
  • pin 17 - clock - orange
  • ground - black

WARNING

Logic level converter might be required. GB use 5V voltage, while ESP32 works with 3.3V. I take no responsibility for fried devices.

My personal GB Pocket outputs 3.5V and I didn't encounter any issues without logic level converter.

Usage

Use EspTouch to configure Wi-Fi. After it is configured - access device using http://gb-printer/.

Wi-Fi settings can be reset by holding a button during boot.