Much like James Powderly and the Graffiti Research Lab‘s LED throwies and electronic laser vandalism, Soundfiti’s idea of “Sound Tossing” works on a similar principle. Described as “an alternative type of electronic street art” and a resistance movement for activists, artists and all around rabble-rousers, its intent is to draw attention to the concept of acoustic overstimulation and raise awareness about our natural acoustic environment. (For a project that analyzes the different sound environments around North America, click here.)
Soundfiti’s prototype, Urban Cricket, is a solar powered audio device that releases cricket sounds. It’s made from free-formed circuitry, meaning all the components are soldered together instead of using a circuit board. The brighter the light, the louder chirps you’ll hear. It requires a lot of soldering, but Soundfiti says this project can be constructed in only one hour.
Some of the tools and parts you’ll need include soldering equipment, a wire cutter, double stick tape, a solar cell, Piezo speaker and case, and series of transformers, capacitors and resistors.
Start with the transformer and solder the big capacitor B (+) to Pin 2 and capacitor B (-) to Pin 4. The longer leads are positive and the shorter leads with the stripe are negative.
Solder the small capacitor C (-) to capacitor B (-).
Now it’s time to solder the resistors that don’t have polarity. Solder resistor D to capacitor C (+).
Solder resistor E to resistor D. Take one lead of resistor E and solder it to Pin 3 of the transformer, solder the other lead with capacitor B (+).
Solder the transistor’s collector (1) to Pin 1 of the transformer and the transistor’s base (2) to the wire connection of all three resistors. Finally, solder the transistor’s emitter (3) to the capacitors B (-).
To rig the solar component, take some black and red wire and strip off the bough ends of the isolation. Solder the black wire to both the solar cell (-) and capacitors B (-), and solder the red wire to the positive solar cell and positive side of capacitors B.
Now take a 50-70 cm long wire and strip off the bough ends of the isolation, soldering one end to the Piezo speakers. Solder the opposite end to Pin 1 and Pin 2 of the transformer, and snip off all the leads you don’t need.
At last find a case (possibly painted camouflage) for your speakers and use some double stick tape to fix the solar cell to the transformer. Toss your urban cricket as high as you can, wrapping it around a tree branch or power line, and start throwing people’s acoustics off.
Visit the Instructables How-To for further instruction, more detailed photographs, and tips on where to buy materials.