Explain any five sensors in brief.

The following are five sensors used in robots:

1. Temperature sensors: Temperature sensors are used to detect changes in temperature.
2. Humidity sensors: A humidity sensor, also known as a hygrometer, senses, measures, and reports both moisture and air temperature.
3. Infrared (IR) sensors: IR sensors use infrared rays that help in detecting the presence of an object.
4. Ultrasonic sensors: These sensors are used to detect an object or obstacle and are based on sound waves.
5. Pressure sensors: Pressure sensors are used to detect changes in pressure.