[BUG REPORT] Meadowphysics triggers from Ansible CV outs not working about monome-rack

[vijaymarupudi]

Appreciate you taking a look at this!

Looks like many Befaco modules don't follow the voltage standards, for example, Rampage doesn't.

https://github.com/VCVRack/Befaco/blob/1698b616dd284db3d7e1eb0d2a54f3931a4772db/src/Rampage.cpp#L223

Would appreciate a change in behavior, I'll send a pull request to Befaco to fix this in the modules I can find, but I suspect many other modules don't implement this properly in practice...

[Dewb]

Hi, thanks for the report! I believe the core issue here is with Befaco Kickall; the Rack Voltage Standards specify that dropping below 0.1V should be enough to clear a trigger input: https://vcvrack.com/manual/VoltageStandards#Triggers-and-Gates

Kickall should use the three-argument version of SchmittTrigger::process() here, to specify a 0.1V low and 1V high threshold. (The defaults are 0.0 and 1.0): https://github.com/VCVRack/Befaco/blob/1698b616dd284db3d7e1eb0d2a54f3931a4772db/src/Kickall.cpp#L84

The slight offset (it's less than 0.001V, but Rack rounds up) on the DAC outputs is intentional to reduce the average absolute pitch error, but it is confusing in circumstances like this when the DAC outs are used as triggers, so I'm going to look at changing that behavior in the next release.