Wednesday, April 14, 2010

dual phase distortion vclfo (tom wiltshire edruid / haxster)

For a long time i have wanted to build the electric druid vclfo ( but i didnt really have the knowledge to implement it exactly how i wanted it. Luckily haxster came along with a pcb on electro-music.

This module is a digitial lfo with various features, first one being voltage control, second being phase distortion (ala casio CZ), third being lots of waveforms selectable by CV and more.

There are a couple of pcbs for this module now but no one has really made all the good parts accessable so i have had to really mod the hell out of the haxster board to get it to near where i want it.

The haxster version had the edruide vclfo core with external VC but nothing else. He included 2 extra lfos which is handy. I have added VC for phase distortion, waveform select and S/H rate. Haxster for some weird reason has 4 buffered outputs from the vclfo so i hacked the pcb so that instead of buffers the opamps actually run as led drivers for the analog lfos. So far i have drilled lots of holes in the pcb, have wires running everywhere and it is only going to get more crazy as i get closer to completion

I seem to be stuck on some stupid problems in the analog lfo, the vclfo works. I havent tested my mods yet as i want to fix these silly analog lfos first. Getting close.

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