This post is a review of the popular waterproof ultrasonic sensor JSN-SR04T. I hope this will serve as a backdrop for some interesting ultrasonic distance sensor experiments and projects. A number of ...

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 ...

A real-time Ultrasonic Radar System designed as an Internet of Things (IoT) project. This system combines an Arduino microcontroller, a servo motor, and an ultrasonic sensor to sweep the environment, ...

A real-time radar system built on a single Arduino. The servo rotates an ultrasonic sensor across a 150° arc, measures distances, drives a buzzer alarm when objects get too close, and streams data to ...

[Mike] lives in a temperate rainforest in Alaska (we figured from his website’s name) and uses a 570 gallon oil tank to supply his furnace. Until now, he had no way of knowing how much oil was left in ...