BoardPilotHC-06 Bluetooth serial module (4 pins) with ESP32
Supply 5 V
Bus GPIO
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| VCC | Power | VIN | Breakout with regulator: 3.6 to 6 V, use VIN |
| GND | Ground | GND | |
| TXD | Output (the part drives it) | D25 | UART: the part sends data here. Connect to an ESP32 RX pin (9600 baud by default) |
| RXD | Input (the ESP32 drives it) | D26 | UART: the part receives data here. Connect to an ESP32 TX pin |
Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.
This module is sold for 5 V. Its outputs may be 5 V: use a level shifter or a voltage divider on ESP32 inputs.
Sources
- HC-06 Bluetooth module datasheet (Guangzhou HC), UART 9600 baud default; slave only; 3.3 V logic levels
Try it in 3D in BoardPilot
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.