[EdsJunk] loves the outdoors and using his Jeep Wrangler to get him there, but hiding a key just to go for a swim makes him nervous. 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 Micro. [EdsJunk] simplified things by cannibalizing his extra keyless entry keyfob; if the ‘duino receives the right code from the keypad, it presses the unlock button on the keyfob to grant access. [EdsJunk] admits that the Wrangler’s soft top is easy enough to get into, but explains that the goal of this project is to keep the alarm activated, which would presumably go off if someone tried to break in through the soft top. You can watch a video demo of the keypad access below. This is another great addition to the multitude of hacks he’s performed on one vehicle.
We do, however, hope that there’s some kind of lockout built into the code to prevent brute forcing: it should be easy enough to activate the car’s panic button after a set number of failed attempts. Car hacks are popular this summer: check out the Real Car Remote Control if you missed it.