Circuit Lake

Electronic Project and Circuit Collection

AVR Electronic lock

11/03/2009 Category: AVR, Digital, Project, Security System

Code Lock AVR

CodeLock is AVR based electronic combination lock. This security system use microcontroller AT90S2313 or ATtiny2313 as main chip. 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. You can modify the code through 3×4 matrix keypad. Default user code (1234) is set up with a jumper.

Each pressed key is immediately confirmed with one short beep. Two short beeps follow after entering the right user code. One long beep appears when entering the wrong user code. The keypad is blocked for 20 seconds for each incorrect action. User code is retained even in the event of a power failure. You can use a LED diode instead of a Beeper.

© Kripa PURI

AVR Lock
Project Documentation and Circuits
avr.4mg.com


ShareThis

Related Electronics Project:
AVR Electronic Lock SmartCard4
The electronic lock SmartCard4 is Security system project based on AVR AT90S2313, similar chip with ATtiny2313. Rudi Slejkovec uses Baskom...
AVR Security Keypad Lock
The Security Keypad Lock Project is a basic access control system based on ATtiny2313. It can be modified to protect...
RFID Electronic Door Lock
The project goal is to build an electronic door lock based on Arduino and ID-20 RFID reader. This security system...

←
→