Special thanks to long-time Parallax friend and contributor Carol Hazlett for this spooky Halloween project idea!

This is an easy-to-make window display for Halloween using the Propeller Activity Board WX, a speaker which will play wav files (I used a Portable Hamburger Mini Speaker), some RGB LEDs, and a 3D printed or store bought hollow Pumpkin.

Some soldering is required for the (#28085) RGB LEDs used in this project. Instructions assume the LED modules are fully assembled and ready to use.

Items needed:

• (1) - Parallax Propeller Activity Board WX (#32912).
• (3) - WS2812 RGB LEDs (#28085) Also available as a 10-pack.
• (3) - 3-pin extension cables, of lengths needed to connect the LEDs for your project.
• (1) - Portable Hamburger Mini Speaker (#900-00018)
• (1) - ActivityBot Speaker Mount (#725-32905)
• 3D printed platform for mounting pumpkin or you can make one from plastic, wood or heavy cardboard.
  • My 3D printed platforms are here. (Thingiverse)
• Spacers and assorted screws, brackets, and nuts. I used 1” spacers for this.
• Diffuser for dampening the LEDs, may be 3D printed or made from other material such as paper or cloth.
  • The ones I used can be found here. (Thingiverse)
• Small 3D printed hollow pumpkin head or one purchased from such sources as Hobby Lobby, JoAnn’s or Michaels.
  • The pumpkin I printed is found here on Thingiverse. (Thingiverse)