Arduinobwoy

Breadboarding the Arduinoboy

I´ve been planning to build the Arduinoboy midi interface since sometime last November. I finally got around to breadboard a version yesterday using a 4n35 optocoupler. Works like a charm! 

The original “schematic” (that uses a 6n138 optocoupler) and the arduino code is located here
http://code.google.com/p/arduinoboy/

I used this instructable as a basis for the midi in part
http://www.instructables.com/id/Arduino_MIDI_in_shield/

When I ordered my arduino a couple of years ago, I also bought 2 atmega8 chips that were prepared with the arduino bootloader. So, I figured that the next logical step would be to freeform (ie solder the components together without a circuitboard) a minimal arduinoboy with one of those extra uc:s. This would allow me to comfortably install the device into the battery compartment of my DMG. 

There´s some info on the minimal arduino setup here 
http://www.arduino.cc/playground/Learni … Standalone
http://www.arduino.cc/en/Main/StandaloneAssembly

The only thing I didn´t have at home was the crystal, so when it arrives I´ll write up an instructable or something.

The next steps from there would be to power the gameboy, midi keyboard and a small active speaker from the same rechargeable battery. Slap it all together with some tape and firewood, quit my job and play music in the street.

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