Handmade manual drawing machine by Niklas Roy made with simple materials - video embedded below:
This plotter is made entirely out of cardboard, welding rod, rubber bands, adhesive tape and super glue. The digital memory is a little book with plenty of different drawing codes, which are written down as coordinates. In this video I’m entering the first code, which makes the plotter draw “hello world”.
You can find out more about the project at Niklas’ blog here