BoardPilotAS608 optical fingerprint sensor with ESP32
Supply 3.3 V
Bus GPIO
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| V+ | Power | 3V3 | 3.3 V |
| TX | Output (the part drives it) | D25 | UART: the part sends data here. Connect to an ESP32 RX pin (57600 baud by default) |
| RX | Input (the ESP32 drives it) | D26 | UART: the part receives data here. Connect to an ESP32 TX pin |
| GND | Ground | GND | |
| WAK | Output (the part drives it) | D27 | Touch output: HIGH when a finger is on the glass, optional |
| VT | Not wired to the ESP32 | — | Touch sensor supply: 3.3 V, optional |
Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.
Sources
- Synochip AS608 fingerprint module user manual, UART 57600 baud default; supply 3.3 V; pins V+, TX, RX, GND, WAK, Vt. Wire colours vary
- Adafruit Fingerprint Sensor Library, Default password 0x00000000
Try it in 3D in BoardPilot
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.