This system uses 4 controllers which send signals to a central hub which holds an Arduino.
It was designed for use with a game called Fraction Smash that my group was developing for a class. Students would enter a fraction using the keypad to re-size their character and then hit the smash button to break through the door if they are the right size.
More info here:
Step 1: Cut Out Pieces
The .DXF files are attached for automated processes.
All of the CAD files and assemblies can be found here:
Step 2: Add Wires to Ethernet Keystones
Keystones are easy to use. Simply place one wire in each slot and then push the plastic cap down on top. It may be too hard to do by hand so I used a pair of pliers to push it down. It is not necessary to strip the wire as the keystone will cut through the insulation for you to make a connection.
Step 3: Circuit
The green and white wires in the picture go to the keypad.
The only difference is that I added the arcade button (not shown) with a wire from positive through the button and then right to the output bypassing all the resistors.
Step 4: Contruction
The keystones can be pressed into the holes with a little force. Same goes for the keypad. Mine was a little tight so I sanded the edges of the plastic with a Dremel to get a better fit.
Next simply attach the arcade button and connect all the wires. The bread board has an adhesive layer on the back so it can stick in place which is very convenient. The placement of the breadboard and the orientation of the button are critical so that everything fits properly. I designed these to be as small as possible so there is not much extra room.
Step 5: Construction (cont'd)
I added a piece from a breadboard for the power and ground wires and the 4 data lines go into 4 separate analog inputs on the Arduino.