Recently browsing hack-a-day I came across Michal Janyst’s project where he used an arduino with some cheap (~$3) led matrix displays to animate eyeballs on a jack-o-lantern.

I really liked the idea and decided I wanted to try and drive the pupils using motion detection from the raspberry pi camera module! Unfortunately I only had a day to work on it, and I’ve never done motion detection before, so the learning began!

Today is Halloween and the effective deadline for the project, and while I’m not happy with the framerate I’m getting in python, I’m quite happy with what I was able to do!

I want to move the python to c++ for next year, which should triple the framerate or so.

Items used:

Cheap plastic pumpkin – Target – $3

2x MAX7219 LED matrix boards – eBay – $2.18
(I actually ordered mine from Amazon – $6.58 to make use of prime shipping)

Longer pi camera cable – Ebay $9-$27

Raspberry pi + camera




Coming soon!


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s