

These analog sensors output values in a specific range based on what the sensors are sensing. Most of the environmental sensors such as temperature, light, pressure, and sound sensors communicate with microcontrollers using analog signals.

Let’s first understand what these signals are:Īnalog signals are a type of continuous signals which are time-varying. So, when talking about communication, there are two types of signals that we often come across:

When we build projects using an Arduino or a Raspberry Pi, we normally would connect different sensors to obtain information regarding the physical world and do some processing based on that information. You might be thinking, when would I need an Analog-to-Digital Converter (ADC) in my application? But do you know ADC is far more common than you think! Let’s look at what exactly is ADC, to begin with.
