At school, I am currently building a synthesiser. It's pretty simple - 1 osc (tri, sine and square waveforms), a filter (cutoff + resonance), a pre-amp and an amplifier, with a stylophone-style keyboard (when I make the PCB anyway). Here's a video of me playing with it
However, I would really like to implement a Monotron-style ribbon controller as well as the keyboard, so squeaks and farts etc are much more easy to access. Plus it would just be pretty fucking cool.
What could I use to do this? I heard about using VHS tape but I'm unsure. I would much rather use a more professional, commercial solution than hack something together.
Any ideas?