This fun and easy project shows you how to create a simple input device with little more than a cheap piezo sensor, an old mousepad, and an Arduino board.
Shown here is a simple method for A) removing a stay tab from a soda can with the rivet-ring intact, and B) attaching the tab to a wooden frame or board using the rivet ring.
I like to build a lot of circuitry, but the voltage regulators that most IC’s require get annoying when you have to keep on buying them and putting them into each board you want to power.