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The onboard 2.54 mm 2×5 header provides both power and serial communication interfaces between the ESP32 control board and external systems such as the Raspberry Pi or RC receivers.
It supports flexible configurations depending on your application needs.
When used as a Raspberry Pi HAT, the header enables direct serial communication and power delivery between the driver board and the Pi.
| ESP32 Pin | Raspberry Pi Pin | Description |
|---|---|---|
| ESP32 RX | GPIO TX | Serial receive (from Pi) |
| ESP32 TX | GPIO RX | Serial transmit (to Pi) |
| 5 V / GND | 5 V / GND | Power supply to Raspberry Pi (up to 5 A) |
⚙️ Default Baud Rate: 1 Mbps
The board can directly power the Raspberry Pi through the 5 V pin, supporting up to 5 A of current output.
By default, UART0 (ESP32 TX/RX) is used for serial pass-through.
If you want to use JSON command communication instead (for structured data exchange between the host and the board), you need to disable serial pass-through via Wi-Fi (HTTP/WebSocket) or USB CDC before use.
Send the following JSON command:
{"T":605,"sf":0}
To automatically enable JSON command mode on startup, add the following to your boot.mission file:
{"T":303,"name":"boot","json":"{\\"T\\":605,\\"sf\\":0}"}