"splicing" in a Bontempo circuit into an existing dual-PT2399 delay

[jessenator]

Probably one of those questions that would be easily answered were I an engineer / bothered to learn my basics...

So I'm intrigued the prospect of something like a Bontempo being married with an existing dual-PT2399 delay (or even a single one, tbh). Looking it over, on paper, it seems that really all that needs to happen is to connect (net labeled) VCO to pin 6 of both PT2399s, but I assume there might be more to it than that.

The Bontempo documentation ( https://electric-canary.com/bontempo.html ) really only notes that the "double-time" switch will instead act like a half-time toggle with a dual setup, but I didn't know if this was all there was when combining these into a single schematic.



For example, if you take a dual chip circuit like the ZeroPoint, where would you "splice" the Bontempo portion's connection to the PT2399s' VCO pin? I marked three different points: RED: omits everything behind it; BLUE: keeps the buffers(?) portions of the nets going to pin 6; and GREEN: omitting basically the original delay pot?



Sorry if that question was worded oddly.

[dan.schumaker]

Theoretically, yes, thats what you need to do, but each time I've tried doing that, it never worked.  I attribute it to me not setting it up correctly the first time it fired up and never going back to check it out.

[jessenator]

Theoretically, yes, thats what you need to do, but each time I've tried doing that, it never worked.  I attribute it to me not setting it up correctly the first time it fired up and never going back to check it out.

In the schematic/connections department or in the ATTINY programming?

[dan.schumaker]

Theoretically, yes, thats what you need to do, but each time I've tried doing that, it never worked.  I attribute it to me not setting it up correctly the first time it fired up and never going back to check it out.

In the schematic/connections department or in the ATTINY programming?

In the first time boot up where you setup the clock/tapping.  I tried programming them myself and also ordered some from Bontempo.  The boards are in my "someday I'll get to this" pile....

[jessenator]

Ah, alright. Yeah there's voodoo in firmware...