You can also use 9v but it results in slower operation.
Solenoid door lock circuit.
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Connections between arduino and rfid are given in the table below.
The positive pin of the buzzer is connected to digital pin 4 of arduino and the gnd pin is connected to the ground pin of arduino.
Atoplee 1pcs dc 12v intelligent electric door lock for file cabinet door.
The operating voltage for the solenoid lock is 12v.
A 10k resistor is used between the vcc and out pin of the hall effect sensor.
The latch will retain its position until the interrupt is enabled.
Circuit diagram for solenoid door lock using arduino is given below.
Solenoid lock has a low voltage solenoid that pulls the latch back into the door when an interrupt pushbutton relay etc is activated.