STEP BY STEP

STEP 1

Use twin-core cable to make a power lead. Attach a plug for the powertank, then split the other end and solder the positive to one terminal of the toggle switch and a short wire to the other terminal. Solder short wires to the terminals of the barrel plug.

STEP 2

Mount the L293D controller on the breadboard as per the diagram in the Bonus Content. Use the wires coming from the toggle switch to make power connections to the breadboard. Use short jump wires to connect the power to the controller.

STEP 3

Connect the Arduino power cable to the breadboard. Use jump wires to connect the Arduino to the controller and the controller to the motor. Refer to the diagram in bonus content and motor specification for correct connection to trigger the wires in sequence.

STEP 4

Build your gearbox kit so that one revolution of the motor produces four turns of the output shaft. Use an offcut of wood to support the motor and gearbox in the case. Download the code, modify it if needed and upload it to the Arduino, then test the circuit.

STEP 5

Mark out the record with two, three or four equal vanes and gaps in between but leave a wide central section. Carefully cut out the vanes (use a hacksaw if you’re cutting vinyl). Use a spare gear to make a mounting boss and glue it over central hole.

STEP 6

Mount the motor and gearbox inside the lid so the shaft extends out of it. Drill holes for the switch, cable and mounting nut, which you can glue into place. Use Velcro to fix the breadboard and Arduino inside the casing. Fix the rotor to the shaft for the final touch.