Thursday, May 27, 2010

Wave Folded!

Well it works! The top trace is the sinewave in and the bottom is folded wave out!
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Wednesday, May 19, 2010

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...
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Tuesday, May 18, 2010

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!
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