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!

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Some more snaps of behind the scenes.

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Checking that the panels look OK as we go along.

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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).

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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