AW: [sdiy] 3.3V and MIDI

[Ullrich Peter]

Hi!

	>Peter makes a good point, it *should* be fine as long as you get the
	>current right.
	>I'd be interested to hear how you get on, I would doubt that any of the
	>modern DSP based synths would use 5v for Midi, as they would have to
add
	>another regulator to the PCB (more parts,more cost), so I would guess
many
	>of them do it this way.
	

	It is easy to measure: As the pin 2 on the MIDI-Out port normally (not
always) has GROUND potential, you can mesaure the supply voltage on pin 4 to pin
2.

	And as conclusio: MIDI port supllied interfaces like some midi mergers
and filters (Philip Rees for example) might not work on such synths as the
voltage is too low in this case.

	Ciao
	Peter

	http://www.ullrich.at.tt