This is a Raspberry Pi running Raspbian and RetroPie.
As input control I used an Arduino Pro acting as a HID device and connected to USB of RPi. Each button is connected to the arduino, acting as a keyboard and mouse. For powering, I used a Lipo 3.7V, but as the RPi runs on 5.0V I had to use a power booster, step-up from 3.7V to 5.0V. LCD is connected to the composite video of RPi. Speaker is connected to the audio amplifier and then to the P2 audio jack of RPi.
Buttons:
Button 1: 5-Way Navigation Button works as keyboard arrows keys OR mouse cursor.
Button 2: Key A
Button 3: Key B
Left side – Button 4: Key Esc/Back
Left side – Switch: switch between Mouse mode / Keyboard Mode
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Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: A New Arduino MicroPython Package Manager, How-Tos and Much More! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi
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Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!