Materials used

No.Part NameImage
1.Zircon PCB x1Zircon PCB
2.Female Header Pins x2Female Header Pins
3.4 Pin JST Port x14 Pin JST Port
4.Ball Sensors x8Ball Sensors

Tools needed

No.Part NameImage
1.SOLDERING IRONfemale T connector
2.SOLDERbattery case
3.WIRE CUTTERSwire cutters

female header pins

Get the two female header pins

switch placement

and solder them as shown.

header placement

4 pin JST port

Get the 4 pin JST port.

JST port

Solder the 4 pin JST port into place. The direction DOES matter so make sure it is exactly like the image.

JST finished

Get the 8 Infrared sensors.

ball sensors

Insert the Infrared (ball) sensors in the 8 slots equally spaced around the perimeter of the main board and solder them. It helps to bend the pins after inserting, then solder, then clip the extra length of the pins

ball sensors

The result should look like this: