S Thread Starter sunnygre Joined Feb 14, 2009 1 Feb 14, 2009 #1 Hello! Im new to this forum. Can any one help me out with my project. I am trying to implement an electronic lock that uses 4 input switches, pic18f1320, and 6 led's display. i want to use the code 2148 to lock the sequence and the same to unlock.