[sdiy] Practical Elecronics "Minisonic2"

[john mahoney]

Indeed, welcome, Julian!


> .... I'm actually struggling with a FET opamp
> interface to the keyswitch bus which I need to trigger the envelope
> shapers. I'm not an an electronics engineer, so this is proving a
> bit tricky!

You've come to the right place. There are duffers here (like myself) but
also plenty of real experts who are quite generous with their knowledge.


> I will also be adding all the circuit diagrams to the site, once I
> get permission from the original author, who I am in contact with.

Great! Always fun to see different circuits.


> Thanks ... I think I was fortunate with the keyboard. It turned
> out to be exactly what I needed, ...

Please tell us what make & model that was, thanks.


> I was surprised I couldn't find anywhere on the Web which sold
> bare keyboard assemblies. There must be such places, of course.

Nah, resistor ladder keyboards are unfortunately "obsolete." Now they all
have matrix switches, with 2 switches per key for velocity sensing, IIRC. *

Have fun!
--
john


* IIRC = If I Recall Correctly, a common acronym on this list. The older we
get, the more we tend to say that. ;-)