After a friend showed him how convenient it was to have keypad entry to his vehicle, [EdsJunk] decided it was time he built his own. The build uses a spare waterproof keypad attached to an Arduino ...

Keypad pin 4 to Arduino digital 8 //R4; Keypad pin 5 to Arduino digital 4 //C3; Keypad pin 6 to Arduino digital 7 //R3; Keypad pin 7 to Arduino digital 6 //R2; Since keypads are available from many ...

arduino keypad lock 1 Articles Arduino Keypad Door Automation. November 1, 2013 by James Hobson 45 Comments [Andrea] just sent us this great student hack he made for his room. He’s ...