altered assembly without pcb

Urban Cricket is a small circuit that imitates the call of a cricket, only being powered by a small solar cell. The idea comes from Reinhard Gupfinger a Linz based artist I met during the Ars Electronica Festival 2011 in Linz. This circuit here is a altered version of his original circuit.
A video demonstrating the functionality can be found here: Youtube video
Since it is hard to recreate a circuit not having a pcb an a schematic, people who want to recreate the Urban cricket will find the schematics, a layout to create a pcb and a parts list here.

Schematic:

Schematic description: The Urban Cricket consists of three simple oscillators, a piezo beeper with built in driver and a solar cell for powering the circuit. The piezo beeper has a built in driver which means that a voltage applied will cause the beeper to generate noise not only a short click. It generates a tone at about 2,000 to 3,000 Hertz witch sounds pretty annoying ("piiiiiiiiiiiii").
The first oscillator makes the beeper beep at a variable frequency of about 20-100 Hertz. The beeper controlled by the first oscillator sounds short 2-3khz bursts. The second oscillator works much slower at about 1 to 3 Hertz.




soon.