As the number of my guitar pedals grew, the decision was clear to build a pedalboard. Then I thought, why not add some light, so I can see the knobs in the dark. And then I found out about those programmable LPD8806 strips with libraries for Arduino and Raspberry Pi. That was when things blew out of proportion… so now the result is a mixture of light organ and pedalboard. It can turn sound into light using pitch detection and sound volume with a little help from a Raspberry Pi. It features several animation modes and a Tuner, a visual metronome and more to come.
Here you can read more about the project details:
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Some questions. Did you get a buffered signal split pedal to take the guitar signal to the pi and to the amp? Also any leads on where to get those glass tubes?
1. I used the sub output of my looper (Boss RC 300) for this, but a split pedal or one channel of a stereo pedal will also do the trick.
2. I got mine from here: https://www.modulor.de/en/acrylic-glass-xt-round-rod-colourless.html
You should get them at a craft store or department store. Don’t buy the expensive ones, which are optimized for transmitting light. The cheap ones should be just as fine.
Finally got my lights working, but unfortunately there is a lot of interference from the PI and the lights in my signal chain. Did you have any of these problems? Any suggestions?
Turned out to be a ground loop. Grounding the amp and the led power supply to the same ground solved the problem.
Good to hear! I also didn’t have any humming problems.