If any button which is in parallel is pressed door is locked.
Electronic door lock system circuit diagram.
Homes without proper security measures in place are particularly more vulnerable.
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.
But it is easy to avoid home break ins by using a simple solution electronics projects for you.
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.
The lock code can be set by connectiong the line wires to the pads a b c and d in the figure.
Circuit and working fig.
The output can be connected to drive the relay to open the door usually using motor.
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 key this electronic circuit turns on a relay by pressing four keys in the correct order.
One transistor electronic code lock system circuit principle.
Description and working of electronic code lock circuit in the circuit electronic code lock the lock code is set through proper connection of line wires to the pads a b c and d as shown in the schematic diagram of electronic code lock.
It means that this security system circuit is the combination of pressed key itself not the mechanical.
Electronic door lock home burglary incidents are on the rise.
The circuit is very simple and can be assembled using readily available components.
The complete phenomenon of electronic code lock system has been described briefly in the further paragraph.
The circuit requires.
This is the circuit diagram electronic door lock security key system.
Password door lock security system circuit diagram.
Electronic lock smartcard4 circuit schematic schema wiring diagram diy project schaltbild.
1 shows the circuit of the electronic door lock.
Schematic of the code lock circuit.
The main principle of this circuit is that the door lock opens only when the buttons in series are pressed at a time.
If you want to learn how to make a schematic and pcb then watch my tutorial given below.
This is the complete circuit diagram of the password protected door lock security system designed in cadesoft eagle 9 1 0 version.