Thursday, August 27, 2015

Ian Fritz's Triangle VCO

I built Ian Fritz's Teezer VCO recently and it is extremely clever. It is probably the most unique design that I have seen for an Synth widget for a long time. I can see why he got grumpy when Mr. Blue Lantern allegedly ripped of his design. Anyway it piqued my interest in some of his other VCO designs on his website -- I know that I have looked at this one before, as it is dated 15 years ago, but for some reason I never really took it in. So I have done a layout that is P'n'P compliant and will give it a go.

Wednesday, August 19, 2015

Forbin Digal LFO

Well revisited the Digital LFO from many years ago. This is a Altium layout that I did about 3 years ago to replace the Eagle layout that was posted about 6 years ago! Unfortunately we had a failure with the Kinsten photo PCB... I typed the name wrong anyway... Grrrrrrr......

Friday, August 7, 2015


Well the huge, through hole version of Mutable Instruments Ripples is on a panel, and mostly working... couple of wrong value resistors that need replacing and maybe lower gain (i.e. specified -- not what's on hand) transistors...