Hi sgurz,

Yes, Toppobrillo made the circuit board, but this is a DIY project, right?
Their own module is already listed.

We already have these:
https://www.modulargrid.net/e/modules/browser?SearchName=triple+wave&SearchVendor=&SearchFunction=&SearchSecondaryfunction=&SearchTe=&SearchTemethod=max&SearchBuildtype=b&SearchMarketplace=&SearchIsmodeled=&SearchShowothers=1&SearchShow1u=&order=newest

All the best,

KNYST