M4N asks: Is there a reason why functions in most (?) programming languages are designed to support any number of input parameters but only one return value? In most languages, it is possible to ...

The basic functions of the Arduino IDE – pinMode, digitalRead, digitalWrite, and analogRead – are available. Most of the WiFi functions work just like the WiFi shield library.

An Arduino is a popular open-source single-board microcontroller. Learn how to program one and let the possibilities take shape.