Light Hum uses a custom built AC sequencer console to control the brightness and sequence of 8 light bulbs. Each bulb has a photocell theremin attached to it to convert the light frequency into audio frequency. I used different photocells/phototransistors, resistors and capacitors to generate different tones. The heart of the AC sequencer is a board designed by Mark Kleback and Ezer Lichtenstein. This project is completely analog, no computers were used for the audio or the visuals.
Featured in: Engadget
Concept / Design / Electrical Engineering / Production / Performer / Composer
![](https://www.dannewoo.com/wp-content/uploads/2021/07/acsequencer01.gif)
First performance at Glasslands in Brooklyn, NY making music with light (December 9th, 2012)
The AC sequencer control station
![](https://www.dannewoo.com/wp-content/uploads/2021/07/lighthum.jpg)
![](https://www.dannewoo.com/wp-content/uploads/2021/07/box04.jpg)
![](https://www.dannewoo.com/wp-content/uploads/2021/07/box02.jpg)
The interior wire work
![](https://www.dannewoo.com/wp-content/uploads/2021/07/interior.jpg)
![](https://www.dannewoo.com/wp-content/uploads/2021/07/relay_boards.jpg)
Lights and circuit boards used during first performance at Glasslands. Light sensors detect the amount of light, the brighter the light the higher the pitch.
![](https://www.dannewoo.com/wp-content/uploads/2021/07/altoid01.jpg)
![](https://www.dannewoo.com/wp-content/uploads/2021/07/light01.jpg)
![](https://www.dannewoo.com/wp-content/uploads/2021/07/light02.jpg)
Glasslands performance
![](https://www.dannewoo.com/wp-content/uploads/2021/07/show01.jpg)
![](https://www.dannewoo.com/wp-content/uploads/2021/07/show02-1.jpg)