anfractuosity / lightfantastic

led mapping using ws2812 led strips and a raspberry pi. The leds transmit encoded data, which is decoded from video to determine the leds position and id number.

lightfantastic

Display patterns on randomly arranged WS2812B lighting strips

• lightfantastic-calibrate - This command is used to pulse out an ID bit pattern for each of your WS2812 LEDs. You will need to record a video of these LEDs.

• lightfantastic-process - This command is used to process the video of the LED's calibration pattern

How it works

See https://www.anfractuosity.com/projects/tree-lighting/ for information on the calibration process and playing simple 'videos' on the lights.

See https://www.anfractuosity.com/projects/painting-a-christmas-tree/ for information on the simple webapp to 'paint a tree'.

Installation of libraries on your Pi

• Install the following library https://github.com/jgarff/rpi_ws281x

• sudo apt-get install python3-opencv

• sudo apt-get install python3-numpy

• pip3 install . --user

Use

To generate the calibration pattern on the LEDs:

• lightfantastic-calibrate

To generate a pickled file containing the position of your LEDs, you can run:

• lightfantastic-process --movie lights.MOV --out lights.p

To Do

• Add webapp code, to paint the LEDs

• Add code to display simple video on LEDs

Commercial alternatives

• https://twinkly.com/ - seems to use a mobile phone for calibration, not sure what LEDs they use