Introduction: DIY PASSCODE LOCKER WITH ARDUINO
Connect the circuit with following connection:
R1 -> PIN 2
R2 -> PIN 3
R3 -> PIN 4
R4 -> PIN 5
C1 -> PIN 6
C2 -> PIN 7
C3 -> PIN 8
C4 -> PIN 9
Buzzer (+)-> PIN 10
Relay in -> PIN 11
Supplies
1.Arduino Uno
2.4x4 keypad
3.Buzzer
4.Relay Module
Step 1: Schemetics
First Upload the pass_initiator.ino skech to arduino to initiate the default password to arduino.
Then open Serial monitor.
Open the passlock.ino sketch & upload it to Arduino.
You are all set!
Press & hold * to change the password -> Type in old password -> Type in new password -> Press & hold # to save the new password.
Enjoy!