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Toy spider in a box which opens at the press of a remote button to drop the spider on whatever’s underneath it, while emitting spooky noises.
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Grandpa Scarer

In this project we are going to use a Raspberry Pi to play spooky noises, whilst releasing a scary spider from a box onto whoever is underneath, at the press of a button!


As well as a Raspberry Pi with an SD card loaded with Raspbian, you'll also need:



  • 1 x USB battery pack
  • 1 x Wifi adaptor


All the software packages that we are going to use are installed in Raspbian by default. Make sure to update your SD card in order to stay current. You can do this with the command: sudo apt-get update && sudo apt-get upgrade.


  • 1 x toy spider
  • 1 x metre of elastic string to attach your spider to your box
  • A way to attach the box to the ceiling
  • An unsuspecting grandpa

Worksheet & included files

  • The worksheet
  • (Optional) Final version of Python code
    • Download to your Pi with wget -O --no-check-certificate

Final version

What it looks like when it's finished:



  1. Do not scare people with medical conditions that could be easily triggered.
  2. Make sure that the box is safely and firmly attached to the ceiling. Do not take risks with this as the final product is quite heavy and could be dangerous if it falls on someone. We recommend an adult takes over for this part ;-)
  3. Take care when using the machinery described. Always have a qualified adult supervising when using appliances such as laser cutters.


This project was the work experience task of Matthew Timmons-Brown (The Raspberry Pi Guy) and Andrew Mulholland who were under the care of Rachel Rayns.


Unless otherwise specified, everything in this repository is covered by the following licence:

Creative Commons Attribution 4.0 International Licence

Grandpa Scarer by the Raspberry Pi Foundation is licensed under a Creative Commons Attribution 4.0 International Licence.

Based on a work at

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