The materials that are required to make your own controller are shown in the following figure. Think about what you would like your controller to look like and how many buttons it should have, as this will determine how many of each item you will need.
The previous figure shows the items we need to create a controller, and the details are as follows:
Card (1) (as large as you want the controller to be)
Wire (2)
Paper fasteners (3) (2 x number of buttons)
Paper clips (4) (1 x number of buttons; each clip should be plain metal with no coating)
Sticky tape (5)
Pens/pencils for decoration (6)
If you already have some electric switches you'd like to use, you will not need the paper fasteners, paper clips, or sticky tape, but I think it's more fun to make everything from scratch!
We also need a safe way of connecting the wires to the Raspberry Pi. One approach is to use special male-to-female wires, which behave like normal wires at one end, but can be connected to a pin or another wire...