In this post, you are going to learn about how to build an RFID and Keypad based door lock using Arduino. To open the door, the user will have to first scan the right tag and then he will have to ...

In this tutorial we are going to interface a 4x4 (16 key) keypad with ARDUINO UNO. We all know keypad is one of the most important input devices used in electronics engineering.

A device which uses a microcontroller, in the form of Arduino Uno, to turn a circuit on/off by checking the password entered. Introduction Password Based Circuit Breaker is a project that helps in ...