Sensor

: The sensing element interacts with the environment (e.g., a thermistor changing resistance as it heats up).

: Measures distance by bouncing sound waves off objects. Use these for robot obstacle avoidance or liquid level monitoring. 2. Environmental sensor

: The data is sent to a controller (like an Arduino or Raspberry Pi) via an analog voltage or digital protocol. 📡 Common Types of Sensors 1. Motion and Proximity : The sensing element interacts with the environment (e