The latch will retain its position until the interrupt is enabled.
Solenoid door lock circuit.
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.
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You can also use 9v but it results in slower operation.
A 10k resistor is used between the vcc and out pin of the hall effect sensor.
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Circuit diagram for solenoid door lock using arduino is given below.
Connections between arduino and rfid are given in the table below.
Solenoid lock has a low voltage solenoid that pulls the latch back into the door when an interrupt pushbutton relay etc is activated.
The operating voltage for the solenoid lock is 12v.
Barska ax12760 solenoid fingerprint module circuit board part107 model number.
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