Schematic Arduino Door Lock with Keypad

This is an electronically-controlled dead bolt lock project based on Arduino. It use old CD player second motor that provides a nice linear motion. To use this lock the user need to type in the correct code and presses the # key to open or close the lock. The green LED indicates the door is unlocked. Red indicates locked.

They keypad has 12 keys but only 10 wires. Reading the keypad is not as simple as checking to see which of the 12 switches is closed. The keys must be constantly scanned to see which if any keys are depressed. Scanning the keypad is done by multiplexing through 6 of the wires on the keypad, alternately setting them LOW and then checking the other 4 wires (blue, green, yellow, red) on the keypad to see if a button is pressed.

Watch the arduino lock in action


tag: door lock, linier motor, lock with keypad, arduino project src

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Schematic AVR Electronic Combination Lock

CodeLock AVR is electronic combination lock based on AVR microcontroller AT90S2313 or ATtiny2313. 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. Program in hex code is 2 kB long.

tag : electronic lock, combination keylock, Avr project src

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Schematic AVR Electronic Lock with Key Generic RFID

This is a generic 125KHz RFID tag reader and an electronic contactless lock. The project is based upon microcontroller AVR ATtiny2313 and generic 125KHz RFID. Here is the project work: the code of first tag that is read after chip programming, is stored in the micro Earom (non volatile) and it works as the "key". Every time that tag is read by the circuit, the relay pulses for about 1.5 seconds, a led lights for 3 seconds and the code is sent out on the serial port. Every other tag doesn't pulse the relay, but lights the led and sends its code on the serial port. So, this circuit will be a generic reader or an electronic lock with RFID key. This project designed by Emilio Ficara.

tag : RFID lock, electronic contactless key, AVR project (src)

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Schematic Home Security System Alarm

Another home security system ensures peace of mind. Based on the MC13192 SARD board, the system uses wireless sensors to monitor the garage door, indoor and outdoor temperatures (for maintaining heat/air conditioning systems and water pipes), and the water level in the sump pump hole. The user can call home and enter a security code to receive a status report about the conditions in his house. The project builded by Carl Smith

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Project and Abstract

related search : Alarm, MC13192, Security system, microcontroller Project src

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