ESP32 with Fingerprint scanner and OLED display for the biometric attendance system.
OLED is connected to ESP32 via I2C:
- SDA to pin22
- SCL to pin21
- Vcc to 3.3v
- GND to GND
Fingerprint scanner is connected to ESP32 via Serial:
- Tx to Tx2
- Rx to Rx2
- Vcc to 3.3v
- GND to GND