This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module ... and best understood by referring the wiring diagram. If everything goes right,you should ...

DUBLIN--(BUSINESS WIRE)--The "Bosch Mobility Ultrasonic ... at low cost. The sensor is made with one electronic board, including a Bosch transceiver integrated circuit (IC) that drives the output ...