- 2 Zinc Hinges, Lowe's, $2, Item #: 308968 | Model #: 100NH-RP-ZN-P
- 4 x AAA battery holder, Radioshack, $2, (I removed the back plate, dremeled the switch flush and mounted upside down), Catalog #: 270-411
- 1 x DPDT switch, Radioshack, $4, Catalog #: 275-636
- GM3 motor, Solarbotics, $7
|This is how to wire the DPDT|
switch. Looking at the bottom.
|Picture taken from Pombo on|
When the arm hits the DPDT switch and pushes it "off", the motor is now in series with the battery but with the opposite polarity, so it begins to rotate in a clockwise direction. This happens until it contacts the momentary switch, which then opens the circuit. This loop repeats every time the power button is pressed.
Once all the parts were printed, it was basically just a matter of assembly. I had to try several designs for the arm until I found one which worked, but it was not very difficult.