6n138 pinout arduino - Send and Receive MIDI With Arduino: 11 Steps with
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Build an ArduinoBoy By using the much simpler Arduino platform, is it possible to replace 6n138 with a 4n28? sukoa (author) Reply.
AN1 Simple MIDI Interface Therefore we are proposing a simple pinout which uses a 10 pin but the 6N138 part shown here produces a much better output signal.
Serial MIDI Interface Schematic If you can't find the Sharp PC900 optoisolator, substitute the more common 6N138. It uses a different pinout.
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