In this project we will do an automatic door lock system using a 4×4 keypad and servo motor controlled by Arduino. Our password: “123”. Materials: Arduino Uno/Mega x1 Breadboard x1 4×4 Keypad x1 Servo Motor x1 Red LED x1 Green LED x1 220 Ohm x2 Jumper Cable Code listing is here, on Arduino Door Lock…
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