I've made it in 2016 and this is a DIY project.
Now I'm sharing this project for free. Also on YouTube made a tutorial how to make it for yourself. But now it is only in polish language. I will made english version in the future.
To make it You must use some electronics:
Link to DIY on YouTube: https://youtu.be/8j3E1GsoAk0
BadWolf.stl | 7.5MB | |
Batt-2020.stl | 143.5KB |