Balanced Piezo Microphone

Using two piezo contact microphones sandwiched together makes for an easy noise free balanced contact microphone. I have explained this pretty well in this Instructable.

Pump julen op

A Christmas Tree hidden under water. Pump it up to get it floating. 10. december 2013 I did this installation for Streetheart Street Art Christimas Calendar. The tree had a flotation chamber attached, that would be filled with air by the foot pump. And then slowly released again to make

Tuning Attiny with a heat gun

The internal oscillator of a microcontroller like the Attiny85 are temperature dependent. The sound of two Attinys with the same oscillator code drifts in and out of tune as they are heated and cooled. This was a quick experiment to demonstrate that it was possible, but it would be beautiful

Skating and Hydrophones

Freezing hydrophones into the ice of a skating rink. Catching all the scratches and cracks of the ice and the skaters action. This was a quick experiment only done once, but absolutely on the list of things I would love to explore further.

Ice Light Bulbs

Touch sensitive light bulbs made of ice. They light up when you touch them. But when you touch them, you melt them and destroy them.