This art project was for Kiwiburn 2016 and 2017, the regional Burning Man in New Zealand.
An Arduino Nano powers LEDs in a fully scarf and stylish top hat, with buttons for mode controls. Comes with click-based beat matching and various "drop modes" for maximum awesomeness on electronic music.
Check out more modes in the full video.
- Beat button (button 1): Tap out beats, the patterns will adjust their speed
- Brightness switcher (button 2): Three brightness levels, avoid blinding people in dark spaces
- Mode switcher (button 3)
- BPM: Trails emanating from the scarf centre, down both halves
- Heartbeat: Trails following the human heart beat curve. Hooked up to the accelerometer, to show blue hues without movement, and red hues when dancing.
- Plasma: Sine wave (single factor plasma) that moves up the strip
- Juggle: Eight colored dots, weaving in and out of sync with each other
- Sinelon: A colored dot sweeping back and forth, with fading trails
- Confetti: Colourful, randomized dots in main palette colour. Drop mode switches to rainbow colours.
- Palette switcher (long-press button 3): Three palettes built-in (ocean, lava, rainbow)
- Drop mode (button 4): Brighter variations of the current mode (e.g. strobe mode)
You'll need Platform.io to build this (or move some files around to build with the default Arduino IDE).
- 1x Arduino Nano
- 150ish Neopixel LEDs
- 2x 18650 battery (plus holders)
- 1x 3DOF accelerometer
- 4x push buttons
- 2x power switches
- 1x Veroboard (optional)
- 2x stereo headphone connectors, for power+data (optional)
- 1x case (lunch box)
- 1x 33yf/25V capacitor (optional, avoids sensor interference)
Some hard learned lessons here, I've iterated on the concept, and burned through three Nanos in the process :D
- Adjust number of LEDs in main.cpp.
- Add an extra battery at the end of the LED strip to ensure they get enough power (see Powering Neopixels)
- A Veroboard will make it easier to solder the many connections, particularly with shared ground and power lines
- The 3.5mm stereo audio jacks are used for power+data (NOT audio). It's a convenient and widely available form factor, but YYMV (JST connectors work just as well). More connections mean more points of failure, but it also makes the LED strips more reuseable.
- With a max. draw of 500mAh (and a lot lower average), the batteries can power the scarf for around two nights of partying.
- Keep cables long for the inevitable resolder (size your case accordingly)
- Add some hot glue to make a waterproof case from a lunchbox
- bnolan: For the hard work on the heartbeat visualisation
- sminnee: For infinite resources in little electronic bits (nanos, connectors, buttons, you name it). Sam also wrote the bulk of the pattern list classes.
- stojg: For invaluable advice on how not to fuck up electronics (turns out you need capacitors!)
- caffeineinc: For keeping my sanity, and the PARTY PANTS
- camp8bit: For a theme camp with great people
Copyright 2017 Ingo Schommer
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