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1  Forum 2005-2010 (read only) / Interfacing / Re: works: MIDI-IN: code + schematics on: January 18, 2011, 06:36:59 am
Hi !
I hacked my old dead Atari 1024stf with a handsaw and a dremel to get the midi in and out pcb with optocoupler, inverters and 556 timer.
(Off topic : do you know what the 556 do in midi out messages ? Midi clock ?)

It works great as a midi input optocoupler !
2  Forum 2005-2010 (read only) / Interfacing / Re: works: MIDI-IN: code + schematics on: January 03, 2011, 09:39:06 am
Here is the official midi schematic for inputs, outputs and through ports :
http://www.midi.org/techspecs/electrispec.php

The triangle amps followed by a small ring are inverters, like the 4049, used for buffering the signal.
http://en.wikipedia.org/wiki/Inverter_%28logic_gate%29
3  Forum 2005-2010 (read only) / Interfacing / Re: works: MIDI-IN: code + schematics on: January 03, 2011, 09:32:22 am
Hi, I just recieved for Xmas my Arduino Mega, and I wish to control circuit bent devices (toy keyboards, speak and spell, DIY filters...) via Midi with Arduino.

Any help would be appreciated !

Question : did anyone tried the midi library for Arduino ?

Thanks
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