There are five input ... analog pin to any one of 32 analog pins. Of course, in addition to the five control lines, you need some handshaking lines, too so you could use as many as eight digital ...

Most consumer digital cameras have tons of tiny ... The diode is connected to an analog input pin on an Arduino. The sensor can be pointed at an object, and the Arduino can sense the brightness ...

Inputs are components that send data to the Arduino. They're either digital (only sends HIGH or LOW signals) — think pushbuttons and PIR motion sensors — or analog (sends a range of data ...