The workshop started with a brief introduction to e-textiles, after which the participants learned few basic crochet stitches. The idea was to crochet a piece which contained both regular yarn and conductive yarn, and to connect it to a pre-made oscillator circuit. The oscillator circuit produced a constant tone, and the crocheted piece provided an interface for changing the pitch by stretching or squeezing the textile. These movements lowered the electrical resistance in the circuit, resulting in higher pitch. It was thus possible to play different tones with the noisy crochet by stretching, pulling, squeezing, pinching and folding it in different ways. See the eCrafts Collective’s DIY section for instructions on how to make one yourself.
Many thanks to Kati Hyyppä and the participants for the nice workshop atmosphere!
You can find the original blog post with the workshop documentation here.