This is a simple project made with the arduino uno R3,the aim is to control a door lock without keys,and using a smart phone to accomplish this,the communication medium is Bluetooth thus the working limit is upto 10m,includes PASSWORD for security.

Step 1: Collecting the Items Required

1.Arduino UNO R3

to control the servo and interface with the bluetooth module.

Step 2: Bluetooth Module

to receive signal when to open or close the lock,to know the status of the lock wether open or close

Step 3: High Torque Servo

to turn the lock lever when signal is sent from the arduino

it is powered by the arduino 5v pin itself and it works well with it.

Step 4: Travel Adaptor and UNO Cable

this is used to power the arduino,the Servo will not work if the arduino is powered with a HW 9v battery.if you want to use a HW battery to power the arduino then you have to power the Servo separately.

Step 5: Sheet Metal

this is used to make the case for the servo motor which allows it to properly hold the motor on the door and the rotating part properly fixed to the lever of the lock.

the case is upto your creativity you can use any other material/thing to make the case.

TO HOLD THE MOTOR ON THE DOOR