Open And Closed A Servo Door Lock

In this project we will do an automatic door lock system using a 4 4 keypad and servo motor controlled by arduino.

Open and closed a servo door lock.

It will open door and send confirmation message otherwise it will send alert message. If key key if the lock is open it can be locked again by pushing o r on the keypad. Bluetooth door lock arduino. To detect the door opening door closing events we can detect the state change on the arduino input pin.

Bend one of the paperclips and fold out the other one as straight as possible. Heres how i made it. Rfid and keypad door lock and alert system using arduino. Recently i rewatched the amazing spiderman in one scene peter parker locks and unlocks his door from his desk using a remote.

When you insert the bent paperclip stick the straightened paperclip beneath it and move it around. If the state is high the door is open. The servo is connected to pin 11. Servo at 0 position door is closed.

If the state is low the door is closed. 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. When i saw this i instantly wanted my own for my door. If the state changes from high to low the door closing event is detected.

If the state changes from low to high the door opening event is detected. After a bit of tinkering i got a working model. After some wiggling your lock will hopefully open. 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.