FingerPrint Attendance systems with LCD
The Devices makes use of the following hardware:
- ESP8266 (node mcu v0.1)
- Arduino nano
- Fingerprint sensor
- 2004 LCD with i2c interface
- 4 by 4 arduino keyboard
Arduino captures key presses and send to ESP, upload arduino.ino to arduino and esp_mai.ino to esp. Ensure you use only the i2c lcd library provided in this repo.
Connection:
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Arduino d2 = esp rx (disconnect while uploading code to esp)
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arduino d3 = esp tx
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fingerprint sensor rx = esp d5
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fingerprint sensor tx = esp d6
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lcd sda = esp d1
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lcd scl = esp d2