[sdiy] (OT) Doepfer MIDI-CV oddity

[Colin f]

> There could be logic-threshold differences in the various 
> pieces of equipment.
> If the input conditioning circuitry has a lower logic 
> threshold, say 1.2V, I would think it would be indifferent to 
> the short pulses in the bottom trace.

Yeah, you could put something after the opto to sharpen it up.
But ideally, you just want the open-collector output of the opto pulled up
with a resistor, then connected to the RX pin of a microcontroller.
Specifying the exact make of opto to use so that it works saves you another
component.

Cheers,
Colin f