- 3mm MDF
- If producing cuts for other pieces to fit into, take account of total width of pieces and add ~0.3mm extra for a bit of room otherwise the bits are very hard to put together
- ULN2003 driver
- 32x35x1.5mm
- 4 pin input: IN{1..4}
- 4 pin power input: Vdd, Vcc, jumper to determine whether board is on or off (jumpered = on)