For my groomsmen gift for my wedding, I decided to do an LED tie bar. I think it turned out pretty well. Hopefully they will all like them (and they don't see this before they get them!)

The bar is a metal tie bar with a 8 NeoPixel (WS2812B) LEDs on it. There is a microcontroller with a push button switch on back for changing the effects and colors. However, as the wedding colors are blue and silver, there is a jumper in place that limits the colors to blue. Cutting this jumper will enable the full range of colors.

The effects are:

  • Fickering
  • Cylon
  • Theater chase in one direction
  • Theater chase in the other direction
  • Fade between dim and bright and back
  • Fade between on and off
  • Fade between on and white
  • Sin mix between color and black (like Cylon, but only one direction)
  • Sin mix (black) in other direction
  • Sin mix between dim and bright in either direction
  • Sin mix between on and white in either direction
  • Blinking
  • On Dim
  • On Medium
  • On Bright (very very bright)

Once the jumper on the back is cut, the full list of colors is:

  • Blue
  • Purple
  • Red
  • Yellow
  • Green
  • Cyan
  • Rainbow (each led a different color)
  • Rainbow cycle slow (bar is a solid color, but it cycles through the HSV spectrum by hue)
  • White
  • Rainbow cycle fast