Analogue-sequencer

> > You could insert any 'midi through box' like a synth or whatever in
> > place of the drum machine too.
> 
> Good thinking! Thanks. Gonna try that this afternoon and will 
> let know if it
> works.

If itturns out to be an incompatibility between the merger output and P3
input, removing one of the resistors on the opto can resolve this. Some
6N139s work perfectly in the circuit, others can be fine for normal messages
and hokey at sysex. A very few just wont work.
I'll be switching to a different opto in future.

Cheers,
Colin f