I am making small prototypes trying out different solutions for an art installation. I would very much appreciate some help in finding a good way of creating vibrations that appear linked with audio.
I aim for /haptic/ feedback when a person touches different plates. When touching each plate the person controls pitch frequency content and/or rhythmical texture of an audio stream. The haptic feedback should feel connected to the sound but does not have to be in synk with pitch frequency.
One way of solving it could be by using small dc motors with weights attached. I have tried it out a bit and it seems vaguely promising.
I use a Nano to communicate serial data over USB to audio software (PureData). The sound is controlled through analog inputs. Then I will translate the audio stream(s) to serial data and send this to the Nano output pins (digital or PWM).
What approach for controlling the motors could work? The goal is to achieve sense of connection between the sound and the touched object.
Thanks in advance!