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 ...

What do you get when you combine a direct digital synthesis (DDS) chip, a power detector, and an Arduino ... detector is an Analog Devices AD8307 along with a 50-ohm input load.

When comparing the Raspberry Pi and Arduino, it's no secret ... doesn't come with an onboard Analog-to-Digital (ADC) converter, so all of its input/output pins are only digital.

Among all the Arduino boards ... by simply dividing the input value into four as seen in this basic example code or by using the map() function, as you can see in this Analog In, Out Serial ...