Robotics, Coderdojo, Time Of Flight, Sensors, Coding Clubs.
ubiquitous and low-cost HC-SR04 ultrasonic “ping” distance sensor. We call them “ping” sensors because they work similarly to the “ping” sound signals used in submarines to detect distance in the water. The old HC-SR04 ultrasonic “ping” distance sensor is mounted on the front of an old CoderDojo