We made a prototype of overhead projector made from scratch, by only recycling the optical parts.
It is therefore very easy to customize and adjust to the parts you recycle.
I just did my last prototype in M5 but it’s a little bit giggling, I’m considering upgrading to M8 like Tom’s design, to have it stronger
Here is a video explaining what we found : https://youtu.be/LhLkJHPBFj8
If anyone has ideas on how and what to improve 😀