Wave Folded!

Well it works! The top trace is the sinewave in and the bottom is folded wave out!

Upside Down...

This was the second PCB of the week. It is a waveshaper that has been lifted out of part of the Buchla Music Easel. The original PCB and stuff was done by Aaron Lanterman. There were a few issues with his original cut of the board but he does have quite an entertaining Video which is on YouTube. TekniK on the electro-music forum has done a layout that has repaied the errors and made it single sided. It is a pretty good job as there are a lot of bits on a pretty small board and only a moderate number of links. You can read about it here. You will probably notice that I managed to get the board etched upside down... again... Hence the OpAmps are hiding on the copper side! I have done some simulation with LTSpice and it is fairly typical Don Buchla with some fairly unusual design elements! Still got a bit of a way to go and I suspect that there are still some tweaks to get this going as per required...

New Noise!

Have had another crack at the Tom Henry Noise source from the 21st Century Synth. Really pleased with how this PCB came out... Did another PCB this evening from the eleco-music forum with slightly less success... Oh Well!

1Ж24Б

Revisiting the CGS65 -- it has never really worked properly...

Resonant Filter Module

Part of the Elektor Resonant Filter Module... Got the wrong Pot's... So close to actually going and now it will be another week or so!

Not Teenagers Anymore...

Looking to build a complete metal can VCO in the not to distant future!

DSP coding

Started down the track of getting a VCO going. It has all sorts of strange modes that I have picked up from the Buchula 259 investigation that I started a while ago. Has some extra weirdness as well!