Overview

This guide shows you how to make an creepy animatronic crawling hand. It uses a glove from a halloween costume, outfitted with a servo motor and a Circuit Playground Express.

This hand is designed to pull itself along the floor slowly, waiting until it finds a cold, dark spot, at which point it will stop and wait until temperature and light increase.  

The right glove is essential for this project. If you don't happen to have a candidate on hand, you can find Zombie, Werewolf, or Dementor costume gloves online.

Parts Used

1 x Circuit Playground Express
Circuit Playground Express is the perfect introduction to electronics and programming
3 x Alligator Clip to Breadboard Wires
These compact jumper cables have a premium male header on one end and a grippy mini alligator clip on the other.
1 x Micro USB cable
Standard A to micro-B USB cable - 3ft
2 x Eccentric Hub for TT Motor
This eccentric motor hub has 2 hexagonal holes and 2 circular holes which allow you to quickly and easily mount custom wheels, cardboard & wood, or other mechanisms to your robot project.
1 x High Torque Metal Gear Servo
High-torque standard servo with metal gearing for extra-high torque and reliability. It can rotate at least 120 degrees with a classic 1.5-2.5ms pulse.
1 x Lithium Ion Polymer Battery - 3.7v 2500mAh
Thin, light and powerful battery with an output range from 4.2V when completely charged to 3.7V. This battery has a capacity of 2500mAh for a total of ~10 Wh.

Tools & Materials

Once you've found the glove you want to use, make sure to grab the following as well:

  • Scissors
  • Cardboard
  • Double sided tape
  • Hot glue gun
  • Hobby knife
  • Fishing line or string
This guide was first published on Oct 11, 2018. It was last updated on Nov 17, 2018. This page (Overview) was last updated on Oct 11, 2018.