This was a fun experiment measuring the rotational speed (rpm) of a fidget spinner using an Arduino Uno, a hall effect sensor and a neodymium magnet. Then seeing just how fast I could make the spinner spin with a shop vac!
The challenge was to see if I could make a rocket stove using paper mache. Paper mache burns so the rocket stove is actually a self fuelling disposable rocket stove. Checkout the video below to see how it was made.