An ESP32 compatible library (Arduino SDK) for the R503 capacitive fingerprint sensor from Hangzhou Grow Technology.
⚠ NOTE: This is a work in progress, some things may not work as expected.
| Sensor Side | ESP32 Side |
|---|---|
| Red (Power Supply) | 3.3V |
| White (Touch Induction PS) | 3.3V |
| Black (Ground) | Ground (GND) |
| Maroon or Green or Brown (RXD) | TXD |
| Yellow (TXD) | RXD |
| Blue (Wake UP) | GPIO pin of your choice |
ℹ Information:
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