Using GPIO pins on Raspberry Pi “A” board to give coins in MAME

Just a quick test to show i have mame starting on boot and that i have GPIO pin 7 setup to enter KEY_5 on the keyboard. The default coin button in MAME. This is cool because if you are doing a 1 player setup in mame you dont need any other add on USB HID boards. So basically you need a $25 raspberry pi, $15 joystick, and a couple cheap buttons.

This is running mame4all, installed from the raspberry pi store gui.

Instructions for getting GPIO pins to work:
http://learn.adafruit.com/retro-gaming-with-raspberry-pi/buttons

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