This project enables real-time distance measurement using an ultrasonic sensor (HC-SR04) and displays the measured distance on a webpage. The ESP32 microcontroller reads the data from the ultrasonic ...

Here are some rough notes on how I built a DIY ultrasonic distance sensor that communicates via Zigbee to Home Assistant running Zigbee2MQTT. I use this to measure the water level in my rainwater tank ...

Sometimes, it’s time to shut down the oscilloscope, and break out the cardboard and paints. If you’re wondering what for, well, here’s a reminder of an Instructable from [CrazyScience], that brings us ...

[Emil] got his hands on a dozen HC-SR04 ultrasonic sensors, but wasn’t too happy with their performance. Rather than give up, he reverse engineered the sensor and built an improved version. Hackers, ...

Abstract: Ultrasonic distance estimation sensor and Lidar micro sensor have been employed in the proposed obstacle detection and collision avoidance method for the computation of the distance between ...

Abstract: Ultrasonic distance sensors based on piezoceramic transducers have >;1m range and millimeter accuracy but require the use of bulky transducers. Existing micromachined sensors deliver ...