Barton Full Wave Rectifier

This is the Barton Musical Circuits BMC21 Full Wave Dual Rectifier in Kosmo format. It’s built using a PCB I bought from Barton, behind a panel I designed and had fabricated. It’s a kind of wavefolding circuit. An input waveform is AC coupled, a DC bias is added, and it’s rectified, so anything below 0 […]

Twofer

Two new modules in one day! Well, one of them hardly counts. Still. Back to Kosmo format. Here’s the Sallen-Key VCF from Barton Musical Circuits. The board was designed with Eurorack in mind. It’s small, and rather densely packed. Still, no problems assembling it and it went together quickly. As designed the pots are all […]

A different drum

You knew that title was coming, right? I finished up the FM drum. It uses a different combination of elements to make drum sounds than the Analog Drum, but a lot of sections of the circuits are cut-and-paste the same between the two. I did the front panel similarly to before, but instead of laminating […]

A drum

One type of module I’ve been missing so far is drums. You can get drum sounds out of general purpose modules, but putting together a drum kit is easier with specialized modules. I went looking and found a couple good candidates at Barton Musical Circuits. I bought a PCB and a panel for each and […]