Nightlights

These charge in the day and turn on in the dark. The 1.2 volt battery is boosted by a coil and hf oscilator to power led lights.

Lightswitch

Tiltswitch

This one has the coil oscilator and brass tilt switch

Métamorphoser

-+ Making sound with ambient light +-

Whistles softly in low light, ocean waves in medium light and silent in full sun.

Made from hollowed chair leg and brass sheet.

This guy has a control panel for dialing in ocean baby, radio static and wet cricket in full light.

Light dust/rain to pure white noise depending on light exposure. 

The circuit has very low resistance and begins emiting sound with only a slight glimmer of light(natural or artificial) and goes silent in full sun unless you bring a water based mass close to the left wing which is a capacitive sensor. This makes it sensitive to humidity also.

74hc14 hex inverter with dual transistors and a74hc595 shift register.

 

5 low frequency oscilators set at various rates of charge/discharge create a randomised wave. it is read by a vco in high audible to ultrasonic range range.

this doesn't make sounds but resonates at high frequencies

Daisy chains

Transistor neuron circuit for feedback loops.