This project uses and arduino and a push buttons to create a keypad. The code for the arduino is made so that you can put a 6 digit password which if its right will execute a command to turn a servo a certain amount of degrees. But if its wrong the red led will light up and nothing will happen. This code can me modified so if the password combination is correct you can make the arduino turn on a motor, turn on some led light, print values to serial monitor, etc... I am not finsihed with the final project but when I finish I will be posting it.