This weekend I made a proof-of-concept demo of the SyncWalk digital composition interface I’m working on. You can see photos on my flickr set, and a video is up on YouTube (I think Harlo may have a video of it up soon).
As you can see, it’s a little noisy right now—I’m going to add some filter capacitors and mill a PCB this coming week in an effort to ameliorate this.
At this point, I’m still not sure how I will differentiate between a palm-contact or a thumb contact, let alone contact between the two hands. (The video does not show it, but the glove has a conductive pad on the palm as well) One strategy would be to use the PWM outs to give each finger’s pad a different tone, like a DTMF pad, or to use different reference voltages for the thumb and palm contacts. Interference would be avoided if I could make a DTMF-like solution (whereas it would be the main source of noise if I had to read analog values), but I’m not sure frequency-detection is something AVRs can do well.
It’s always nice to have incremental rewards when you do a project, and this weekend has yielded encouraging results. I’m ordering conductive fabric tonight from here and will be trying to design a glove-to-cat5 PCB in the coming days. Let me know in the comments if you have any ideas or suggestions!
