Super improved designhttps://www.youtube.com/watch?v=O9Ovm_zCXG0
Sorry for the brief video,but was excited that it works this well,and might be another 2 years before i get around to working on it again.
Let me know if you attempt to make your own one,and any improvements. Thought of a very simple way to make the switch into a foot pedal,with just a lever?https://www.youtube.com/watch?v=YrQTq_QxRFs