Christian Liljedahl

Watertight cable junctions

Working with installations in and under water at illutron, we often need watertight cable connections. Commercial products exist for this - But they are very expensive - And can be hard to get to in rural conditions. We have devised a way to connect cables simple, cheap and reliable using

Simple Rotary Encoder

Using just a small dc-motor and a resistor to make a crude rotary encoder for the Arduino. I came up with a very simple  way to make rotary encoders. I needed a "turn the handle" interface for  an installation. Usually, this can be solved with either a potmeter

Color & Sound - Valve Cluster 1

The 6 handles on the controller box each control a specific light fixture in the ceiling and a simple oscillator. Rotating a handle, you can move either clockwise or counter clockwise around a color palette. As you turn the handle, a simple sine wave oscillator emerges form the box. The

Load Cells and Dancers

A high capacity load cell in the ceiling and a rope. Dancers swinging in the rope and through the load cell influences light and music. Originally developed during the Halfmachine/illutron summer tour of 2009 and then exhibited again at "Thoughtmade" in Malmø in 2010. * Light was controlled

Bathtub Boat

Sailing around the harbour in the summer of 2010 in a bathtub - Usually a bit more decently dressed. But at this occasion, I just couldn't resist putting on a show. Anders Agerbo caught the amazing front shot of the Metropolis building and me in my tub. And

Christian Liljedahl © 2026