Joysticks
Player 1 is a Happ
Controls Rotary Joystick (part #50-5618-00).
The spinner portion is running off the Happ trackball interface kit (part
#56-1000-00), on serial port 1.
The joystick portion it wired to a 4 dollar 6 button gamepad from Walmart.
Basically, I took apart a cheap joystick, plug it in and followed the circuit
board. Connecting two points would create either a button click or a pad
movement.
Player 2 is wired into an old gateway keyboard, these where
nice if you do not feel like going through the keyboard hack.
The whole circuit board of the keyboard is labeled on the back side, all
you do it solder the two wired to the correct contacts.
You still find these keyboards on eBay!
There are also many other methods of making the controls. The best website
I have found is Build Your
Own Arcade Controls.
Buttons
Player 1 uses the 6 buttons from the gamepad mentioned above. Player 2 and all other buttons are wired to the keyboard, this picture shows you how I have my buttons configured. Of course you have to configure MAME with the correct buttons. I looked through the MAME configuration and tried to find keys that were not being used. The only other exception to the buttons is the power switch on the left side. It is wired strait to the computer motherboard. It goes from the button to the ATX power switch jumper on the motherboard.
Wheel (See above high quality
picture)
This was an addition I just added recently.
I followed a walkthrough pdf file titled "How
to build a Cheap Spinner" by Nathan Strum, that shows how to make
a spinner knob. I ordered a
computer steering wheel off eBay!
for about 5 dollars just to get the steering
wheel. I cut it apart and instead
of using the spinner knob I used the steering wheel. This is probably one of the best tutorials I have seen for
making a spinner. It is a must
read.
Pedal
Well I figured since I was making a steering wheel, I might as well make a pedal to go with it. You can pretty do anything for the pedal(s). I just used a hinge, and a spring to make the pedal. Then stuck a button in there that would be pushed when you pressed against the pedal. Use your imagination on this, for mine is pretty ugly.