Password protected door locking system step 1.
Password door lock system.
Now read the five digit password from the user.
The password based door lock system allows only authorized persons to access the restricted areas.
The entire project is controlled by using the arduino.
We are using it.
Password based door lock system algorithm initially declare the port1 to lcd data pins and control pins rs and e to p3 0 and p3 2.
About the 4 4 keypad.
Etekjoy electronic door lock 3 in 1 password rfid card tag hidden keyhole digital touchscreen keypad left right lever reversible handle keyless smart auto lock 3 9 out of 5 stars 90 80 00 80.
A 4 4 or 4 3 keypad can be used to enter the desired password.
Also declare port2 to.
Then display the message enter password on lcd.
Compare the entered password with the.