If the state is low the door is closed.
Open and closed a servo door lock.
The servo is connected to pin 11.
When i saw this i instantly wanted my own for my door.
It will open door and send confirmation message otherwise it will send alert message.
Heres how i made it.
After a bit of tinkering i got a working model.
The command to close the lock after or is pushed.
The required circuit is a simple pulse generator based on a 555 timer arduino or pic microcontroller.
If you have two paper clips on you the process will be that much easier.
When you insert the bent paperclip stick the straightened paperclip beneath it and move it around.
To detect the door opening door closing events we can detect the state change on the arduino input pin.
If key key if the lock is open it can be locked again by pushing o r on the keypad.
Arduino uno mega x1 breadboard x1 4 4 keypad x1 servo motor x1 red led x1 green led x1 220 ohm x2 jumper cable code listing is here on arduino door lock.
If the state changes from low to high the door opening event is detected.
If the state changes from high to low the door closing event is detected.
After some wiggling your lock will hopefully open.
Rfid and keypad door lock and alert system using arduino.
Bluetooth door lock arduino.
If the state is high the door is open.
This operation can be used to actuate a door lock or a latch to enable you to remotely lock and unlock a door or gate.
Bend one of the paperclips and fold out the other one as straight as possible.
In this project we will do an automatic door lock system using a 4 4 keypad and servo motor controlled by arduino.