Lockbot is a robot attached to our door that makes it possible for trusted members who don't have a key to open the door. It consists of a servo motor, two gears, a potentiometer and an Arduino Uno + ethernet shield.
- Install the Arduino IDE
- Install the needed libraries in the Library Manager (see the top of
lockbot.ino) - Copy
tokens.h.exampletotokens.hand edit them if nescessary - Select 'Arduino Uno' from the Board options
- Program the Arduino
- Install OpenSCAD
- To print each lockbot part, open
printfile.scadin OpenSCAD, uncomment the part you want to print, render it, export as STL then 3D print it. The big gear should be printed with 5 perimeter walls and solid infill, so it can handle the forces.
The NFC plate that holds the NFC cards is also included in this repository, see nfc_plate.scad. There's spacers for the motor in spacer.scad, this will need to be modified for different motors.
- Arduino Uno + power supply for Arduino Uno (5V USB)
- Servo motor: TD-8130MG 360° Servo Motor - 30kg/cm + separate power supply for the servo motor
- Relay (also connected to motor power supply)
- Ethernet shield
- Buzzer
- Button
- 10k multiturn potentiometer
See lockbot.ino for how to connect these components together
Make sure that when turning the lock, the multiturn potentiometer does not go out of bounds (overturning it WILL break it).
Before lockbot can be used, you'll need to calibrate 4 points using client.py <subcommand>
calibrate_open_pos: the position you'd like lockbot to go to when opening the doorcalibrate_open_bnd: the last position where you consider the door as 'open'calibrate_close_bnd: the first position where you consider the door as 'locked'calibrate_close_pos: the position you'd like lockbot to go to when closing the door