Abstract: This paper presents a lesson sequence to teach programming using the Arduino platform and the free TinkerCad Circuits environment, promoting hands-on activities. The sequence supports ...

Switches and push buttons need debouncing. It is straightforward to do this with software, using a library. The advantages of the Switch library are: External pull-up resistors are not required.

A keyboard matrix circuit is a design used in most electronic musical keyboards and computer keyboards in which the key switches are connected by a grid of wires, similar to a diode matrix. This kind ...