Electronic Door Lock System Circuit Diagram

Password based door lock system using 8051 microcontroller circuit design uses five major components a microcontroller an l293d motor driver a dc motor a 4 4 matrix keypad and a 16 2 lcd.

Electronic door lock system circuit diagram.

Electronic door lock home burglary incidents are on the rise. The circuit is very simple and can be assembled using readily available components. If you want to learn how to make a schematic and pcb then watch my tutorial given below. The main principle of this circuit is that the door lock opens only when the buttons in series are pressed at a time.

Electronic key this electronic circuit turns on a relay by pressing four keys in the correct order. Here an at89c52 microcontroller is used and it is an 8 bit controller. Schematic of the code lock circuit. Password door lock security system circuit diagram.

This is the complete circuit diagram of the password protected door lock security system designed in cadesoft eagle 9 1 0 version. But it is easy to avoid home break ins by using a simple solution electronics projects for you. The output can be connected to drive the relay to open the door usually using motor. For example if the code is 1756 connect line 1 to a line 7 to b line 5 to c line 6 to d and rest of the lines 2 3 4 8 and 9 to the reset pad as shown by dotted lines in the schematic.

Circuit and working fig. Homes without proper security measures in place are particularly more vulnerable. It means that this security system circuit is the combination of pressed key itself not the mechanical. This is the circuit diagram electronic door lock security key system.

The complete phenomenon of electronic code lock system has been described briefly in the further paragraph. Electronic lock smartcard4 circuit schematic schema wiring diagram diy project schaltbild. Build an ibutton electronic lock based around a at91c2051 microcontroller includes asm source code circuit schematic schema wiring diagram diy project schaltbild combination lock pic16f84 circuit schematic schema wiring diagram diy project schaltbild. It is a quite simple circuit of electronic door lock with security code of 7 digits.

If any button which is in parallel is pressed door is locked. The circuit requires. The lock code can be set by connectiong the line wires to the pads a b c and d in the figure. The circuit is built around dual j k flip flop 74ls73 ic3 and ic4 regulators 7812 and 7805 ic1 and ic2 respectively 555 timer ic6 and a few other components.