AVR tiny code lock

 avr-tiny-code-lock.jpg

CodeLock is an AVR based electronic combination lock it is realised with Atmel AVR microcontroller AT90S2313 or ATtiny2313.This project used for access control. Program in hex code is 2 kB long. User code is consisted of 1 to 4 digits. If you buy the chip than 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 3×4 matrix keypad. [via]

AVR tiny code lock – [Link]

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