PIR-Sensor

When designing a robot, a choice has to be made as to the types of sensors that it will have. This choice will be determined mostly by the purpose of the robot. But the degree of complexity required in using the sensor and the cost of the sensor also play a role, of course. Sensors that are favourable in these respects are for example bumpers and feelers with micro-switches, IR distance sensors from Sharp and ultrasonic sensors.