I’m racing in an indoor micro FPV quadrotor (tiny whoop) race this weekend inside Nebraska Furniture Mart (a giant furniture store). The race is put on by our local Kansas City Multi-Rotor group. So, of course, I had to build some FastLED-powered race gates!
3/4" white PEX pipe is a pretty decent diffuser, especially with thin strips of white floral styrofoam on top and bottom of the LED strips to keep them centered in the pipes.
They can be built as cheap as ~$15 each. I used some Trinket Pro 5V I had laying around, but I plan to build more using Teensy LCs, Adafruit Metro Minis, cheap Nano clones, etc. Anything small, cheap, and 5V so I don’t need to add level-shifters. Two buttons are included, one to change brightness, the other to change patterns.
I built a few using perma-proto boards, but then designed PCB shields, of course. I threw together a few new patterns.
Source code, build instructions, pics, video, 3D printed pars, etc: https://www.evilgeniuslabs.org/trinket-pro-rgb-led-micro-quadrotor-race-gate