A weblog focused on interesting circuits, ideas, schematics and other information about microelectronics and microcontrollers.
AVR code lock
Electronic combination lock with ATMEL AVR
CodeLock AVR electronic combination lock is realised with Atmel AVR microcontroller AT90S2313 or ATtiny2313. User code is consisted of 1 to 4 digits. (In paid version user code is consisted of 1 to 8 digits.) If the code is entered in the correct sequence, then after 1 second the relay and the electric striker (in the door) switch on for 1 second and then switch off again. User code can be changed via 3x4 matrix keypad.