First card is finished: VCO Controller board. Frrequency control for 2 x 12 Signal generators, VC waveform selection VC scale (transpose) selection VC Vibrato VC PWM-LFO This was built on veroboard, so schematics only (7 pages), but no pcb layout. http://www.oldcrows.net/~jhaible/polykorg/jh_polykorg_clone.html JH.