💡 The World of Sensors: Bridging Physical and Digital
A sensor is a device that detects and measures a physical or chemical quantity in its environment (such as light, heat, motion, or pressure) and converts this information into a usable signal, typically an electrical or optical signal.
In essence, every sensor is a type of transducer because it converts energy from one form (the physical quantity) to another (the electrical signal).
Signal Conditioning: The electrical signal is amplified, filtered to remove noise, and often converted from an Analog signal (continuous values) to a Digital signal (discrete values) by an Analog-to-Digital Converter (ADC) for processing by a computer or microcontroller.
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