A motor-array instrument crafted of bowls, bells, balls, beads and (b)clothespins. A vibration motor is attached to each suspended bowl and controlled from an arduino-based interface.
The control for this instrument is based off the interface originally built for my bell controller, though the modes and timings have been customized to better fit the acoustic material.
- Continuous vs. pulsing
- High-resolution pressure/frequency control
The structure of the program is based on a single
motorcontrol() function. Each motor uses the same function with slightly different parameters. All logic is self-contained in the Arduino. You can view the code on github.
The following materials were used in addition to the motors and control interface.
- Resonators: plastic bowls and cups
- Fillings: beads, ping pong balls, bells, bingo chips, clothespins
- Stands: monofilament, wood, threaded metal rods, hex nuts, rubber bumpers, sticky tack, felt
- Performance aids: magnetic wand, overhead projection
Special thanks to Liam Mooney for advising on the construction of the bowl stands.
"Performing" the instrument involves manipulating the fillings, adding or removing "mutes" (cups), and altering motor states via the control interface. A magnetic wand aids in quickly removing materials from the bowls, and an overhead projection is recommended to increase visibility.
"Stephanie Cheng Smith/Liam Mooney/Sarah Hennies's Everything Else", The Wire, September 2020, Issue 439, p.85