I searched on the form but can’t find a straightforward answer. What exactly is the Vidiot’s shape knob doing?
It controls a crossfader between the horizontal and vertical oscillators, using different oscillator outputs for the diamond (triangle outputs) or circle (sine outputs). If you patch the H and V triangle outputs from the Vidiot to a Cadet crossfader and sweep the knob, the result looks identical to sweeping the Vidiot shape knob and looking at the Vidiot diamond output.
CV control over the shape knob seems like an odd omission on the Vidiot, it’s such a effective modifier.
Totally. Wonder if there’s a way to mod it…
the shape knob is a rotary switch (if I remember correctly) so CV control is more difficult probably
The Cadet Fader module does it. If you have any interest in DIY I highly recommend the Cadets as a way to expand the Vidiot. The parts sourcing is not fun but once I had all the parts I had a great time assembling them and learned a whole lot about how the Vidiot and video synthesis works. It also made me appreciate how much value goes into the LZX modules.
You could also use the fader in Bridge or Pendulum.