A walking pedestrian produces 5 watts per step [1]. A dancer would almost certainly exert more energy, so let's optimistically double that to 10 watts per step.

A walking pedestrian produces 5 watts per step [1]. A dancer would almost certainly exert more energy, so let's optimistically double that to 10 watts per step. Let's also assume the dancer steps an average of two times a second, for a total of 20 watts of power. Finally, let's assume you're able to harvest all energy from the step. Adafruit recommends 20mA as rule-of-thumb for estimating NeoPixel energy usage at 5V [2], so let's say a NeoPixel requires a little under 1W. You could probably run 20 LEDs during a dance routine in this. While the wireless part is more exotic, it is likely doable. Of course, the form of dance will determine how many LEDs you can include. Perhaps your dancer outfit is best suited for Riverdance... [1] https://pavegen.com/ https://pavegen.com/ [2] https://learn.adafruit.com/adafruit-neopixel-uberguide/powering-neopixels#estimating-power-requirements-2894486-11 https://learn.adafruit.com/adafruit-neopixel-uberguide/power...