Introduction: Bicycle Trailer Light (with Knight Rider Effect)

About: Maker, tinkerer, Arduino and Neopixel enthusiast

So far I always thought that my bike trailer did not have a proper light. The standard bicycle lights were just to small. So I created a Arduino and neopixel strip based model myself. Of course it's battery powered and to achieve the desired 5V 3 AA batteries are used (also because they're available everywhere).

With this bike trailer light your Thule or any other bike trailer is well visible in the dark.

Source Code:

3d casing


  • Arduino Nano
  • Neopixel 1 meter strip ws2812b (waterproof)
  • 3d printer for housing
  • 4 screws
  • somes cables
  • switch
  • 3 AA batteries
  • soldering equipment
  • capacitor 1000uF 16v