Powered by an Arduino Uno, this laser tripwire alarm project works much like ... one for the servo and another for the ultrasonic sensors. The main code is a simple 14-line piece with a simple ...

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

The robot's eyes and ears are provided by an ultrasonic sensor and an infrared ... the whole contraption. The Arduino, of course, drives the whole thing, and the code to make the microcontoller ...

Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic distance sensor, and an Adafruit Wave Shield. Originally, this parking/distance sensor used a small TFT to display the distance to ...