2 Factor Authenticated Door Lock

Introduction

The 2 Factor door lock is a locking system built using Arduino UNO, LCD display, R307 fingerprint sensor and keypad.

Folder Structure

1. docs/top-layer.png : PCB Board top Design
2. docs/bottom-layer.png : PCB Board bottom design
3. docs/drills.png : PCB Board drills design
4. eagle-design : PCB design
5. src : code

Components Used

1. Switch (X1) - Tomson Electronics
2. LED 0805 (x3) - Digikey
3. Pin header (x2) - Robu
4. Screw Terminal 1x2 (x1) - Tomson Electronics
5. Screw Terminal 1x4 (x1) - Robu
6. Capacitor 0805 100nF (x1) - Robu
7. Resistor 0805 100Ω (x1) - Tomson Electronics
8. Resistor 0805 10KΩ (x3) - Tomson Electronics
9. Capacitor 175TMP-0810 10µF (x1) - Tomson Electronics
10. Resistor 0805 150Ω (x1) - ELECTRONICScomp
11. Crystal 16Hz (x1) - Tomson Electronics
12. Resistor 0805 180Ω (x1) - Tomson Electronics
13. Resistor 0805 1KΩ (x7) - Tomson Electronics
14. Diode 1N4007 (x2) - Tomson Electronics
15. Capacitor 175TMP-0810 1µF (x1) - Mouser
16. Resistor 0805 220Ω (x3) - Tomson Electronics
17. Capacitor 0805 22pF (x1) - Tomson Electronics
18. Resistor 0805 330Ω (x1) - Tomson Electronics
19. Resistor 0805 390Ω (x1) - KTRON
20. Capacitor 175TMP-0810 470µF (x1) - Element14
21. Resistor 0805 510Ω (x1) - Tomson Electronics
22. Resistor 0805 680Ω (x1) - ELECTRONICScomp
23. 7805T (x1) - Tomson Electronics
24. Resistor 0805 82Ω (x1) - KTRON
25. ATMEGA328P-AU (x1) - Tomson Electronics
26. BC547 (x1) - Tomson Electronics
27. Barrel Jack (x1) - Tomson Electronics
28. PCF8574AT (x1) - Mouser
29. 5V Relay (x1) - Tomson Electronics
30. 16x2 LCD Display (x1) - Tomson Electronics

PCB Design

Top Layer

Bottom Layer

Drills Design