This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module ... If everything goes right,you should see the burning eye of the red LED when there is no ...

Enclosed are the ultrasonic sensor, a temperature sensor and an LED indicating ... cable can be found an Arduino compatible board with an XBee shield and a 9V battery. Using another XBee shield ...

In the real world, missile systems use advanced radars ... To supply targeting data for the launcher, an Arduino Uno uses an ultrasonic sensor pair mounted atop a servo. As the servo rotates ...