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Sensors are needed to provide awareness of surroundings and allow interaction with the environment. Common things that can be sensed include light, sound, heat, chemicals, object proximity, and physical orientation. A wide variety of sensor types exist, including ultrasonic, visual, color, magnetic, orientation, motion, voltage, and chemical sensors. Sensor costs vary significantly depending on type, from around $5 for simple smoke detectors to more for specialized sensors. Ease of use also varies, with NFC

Author

sasith.wickrama

Language

EN