Twinkle, twinkle, little bat! How I wonder what you're at!
Up above the world you fly, Like a teatray in the sky.

The Mad Hatter  
Alice in Wonderland by Lewis Carrol

Make a spooky bat out of chipboard and decorate it with your best Halloween colors, sparkles, and ribbons. A little hot glue and crafting, and you're ready to hang it above your door, where unwary passers-by will brush past and trigger your bats wings to flap up and down, scaring them out of their pants!

You don't need a fancy motion sensor to trigger this halloween effect. The bat wings are triggered by a strand of conductive thread tied to the Hallowing's onboard capacitive touch sensor. Anyone who comes in contact with the secret dangling thread will cause the bat to leap into motion.

The Hallowing board is the spookiest, creepiest, scariest microcontroller around. Its skull face and winking OLED eye are sure to frighten even the bravest of makers when you program it to go Bump in the Night.

Difficulty Level

This is a very easy beginner project. There is no soldering required - all the parts just plug in or tie onto one another. 

The bat shape is made from light chipboard, and can be cut out with a Cricut or Silhouette cutting machine or with scissors or a utility knife and a little patience. Final assembly makes use of a hot glue gun.

The software for this project is also very easy to install - just drag and drop the file onto the Hallowing and you're ready to go.


Video of a blinking eye on a Adafruit HalloWing M0 Express.
This is Hallowing..this is Hallowing... Hallowing! Hallowing! Are you the kind of person who doesn't...
In Stock
Angled shot of a micro servo with a JST cable.
This tiny little servo can rotate approximately 180 degrees (90 in each direction), and works just like the standard kinds you're used to but smaller. You can use any...
In Stock
Stainless Thin Conductive Thread - 2 ply - 23 meter/76 ft
After months of searching, we finally have what we consider to be the ultimate conductive thread. It's thin, strong, smooth, and made completely of 316L stainless steel. Once you...
In Stock
Lithium Ion Polymer Battery 3.7v 2000mAh with JST 2-PH connector
Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This...
Out of Stock
USB cable - USB A to Micro-B - 3 foot long
This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or...
In Stock

Additional Materials Needed

  • 12'x24" sheet of light chipboard - I'm using store bought, but you can also use a cereal box that's been sliced at the corner and unfolded so it's flat
  • About 18" of thin, stiff wire - I'm using 22g steel wire 
  • Hot glue gun
  • Glitter, paint, and sparkles for decorating
  • Fishing line or string for hanging your bat
  • Utility knife or vinyl cutting machine
  • Small Rubber bands
  • A small screwdriver to assemble the servo

If you're using a Cricut or Silhouette to cut your bat shape, you'll need a 12x24 firm grip cutting mat and some blue painter's tape.

This guide was first published on Oct 28, 2020. It was last updated on Mar 08, 2024.

This page (Overview) was last updated on Mar 08, 2024.

Text editor powered by tinymce.