Prepare the vibrating plate from the material of your choice. Traditionally, these plates were metal. We experimented with different sized aluminum and acrylic plates. Circular plates generate different ...
The Gametrak (http://en.wikipedia.org/wiki/Gametrak) is a USB controller that senses positions in 3-dimentional space. The USB connection makes it extremely hackable for spatial position sensing since it has two ...
This project combines performance and craft in a system that visualizes sound waves as sand on an oscillating plate. The frequency of sound, and the flow of sand are controlled by a box suspended above the plate.
Created with the effort to combine digital performance and crafts, the Digital World & Image Group at Georgia Tech added to existing cymatics projects for an interactive crafting experience to the tune of sine waves. It’s a great way to learn how sound works.
So find a good speaker and a few materials. You don’t have to follow the hardware list exactly. use what works for the measurements of your speaker. Get started on your own sandtone station.
You'll need Various Parts and Equipment OSCILLATING SPEAKER + PLATE 10” speaker (ours was 16ohm) Sound Amplifier (able to sufficiently power your speaker without blowing it up. See this guide for help: http://www.outrageousaudio.com/page_files/wiring_subs.pdf)
Rod 1’ x ¼-20 threaded rod (4) Rod 36” 10-24 threaded rod (cut to 14”) (4) Nylon insert lock nuts ¼-20 (12) Nylon insert lock nuts 10-24 (4) Flat washers (#10) (2) Nylon flat washers (1/4”) (2) Flat washers (1-1/4”OD, 1/4” ID) (4) Flat washers (1/4” ID) (12) 2’” Flush-fit pipe drain (souxchief.com) - or equivalent to fit over coil Nylon Spacers ½ x .257 x ½ (2) Acrylic Sheet 12” x 12” x [” Foam core 12” x 12” Hot glue
SAND DISPENSER Brass Hose Barb Adaptor (3/8in ID x ½ in MIP) Clear Acrylic Round Tube 1” OD, 7/8” ID from McMasterCarr (cut to 12” long) http://www.mcmaster.com/#catalog/118/3572/=kgl42m All purposes nylon-coated rope (4 feet) 0.125” diameter, rated for at least 250lbs plastic funnel (8cm top diameter) hobby servo (we used CSRC-311) Ardunio microcontroller stiff wire rod (at least 15” long and thing enough to fit through a servo arm hole) 9V battery 9V battery snap mini breadboard hollow plastic sphere (with a diameter smaller than the inner diameter of your acrylic tube but larger than the end of your funnel) force sensing resistor 0.5” https://www.sparkfun.com/products/9375 acrylic cement
HANGING APPARATUS & SOUND CONTROL Gametrack controller Computer running Apple Logic ***all of the following materials need to be rated for at least 250 pounds*** All purposes nylon- coated rope (20 feet) 0.125” diameter, rated for at least 250lbs Pulley bungee cord and or/ extension springs with loose ends Various carabiners, metal O-rings and threaded connectors
First we’ll build the plate. The plate is attached to a speaker at one point and vibrates when the speaker emits sine waves. We used a 10-inch 16-ohm speaker. The higher the speaker’s resistance, the harder it is to break the amp powering it. It’s also more difficult (and possibly expensive) to find an amp powerful enough to vibrate a 16 ohm speaker with enough force to shake something set on top of it. We got around this by reducing the downward force of the plate on our speaker coil with a expansion spring (but more on that later).