Installing at John Lewis

Here is the window in which the piece will be installed. It’s right by the bus stop, so hopefully people will notice it!


Some more snaps of behind the scenes.



Checking that the panels look OK as we go along.



Power and electronics hide above the window . The panels are powered by a 5v 40A power supply (overkill) connected to the panels with 6A mains cable (overkill – but the voltage drop should be very low).




Construction part 1

Making test pieces

General mess

Test pieces without diffusion channel


First a test without the diffusion channels (which will be made by Fusion Optix).  The video is deliberately out of focus to simulate the diffusion. Just testing the code in a rough fashion here. Running at about 25% brightness. it’s boring for 55 seconds every minute, then exciting for 5 seconds.


Installation update

Building the circuit.

This is based on a teensy 3.0 microcontroller from Hobbytronics. I opted for this as it already had a powerful library for controllling WS2812 leds. It’s a very powerful controller and also benefits from having an in built real time click (handy if your building a clock!) and it can be programmed using the Arduino IDE.

Thanks to Paul at PJRC for  designing the controller and also creating libraries and sharing them with everyone else!! I doff my cap!

(from top to bottom ) The circuit consists of  -

3v battery (for the real time clock backup)
Teensy 3.0
3.3v to 5v converter chip
Data and power sockets.

Circuit board