EDN

An Ultrasonic Shortcut – Getting the HC-SR04 Transducer Up and Running Fast!

The HC-SR04 ultrasonic range sensor is a pretty cool pre-wired module that you actually enjoy using when you start playing with electronics, microcontrollers, and robotics. As you might have noticed, ...
EDN

Arduino Ultrasonic Proximity Sensor

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 ...
Hackaday

HC-SR04 Isn’t The Same As Parallax PING))) But It Can Pretend To Be!

He wanted to use the less expensive HC-SR04 ultrasonic rangefinder in a prototype. Longer term he wanted to have the choice of either a Parallax PING or MaxBotix ultrasonic sensor for their better ...
Hackaday

Good Vibrations: Giving The HC-SR04 A Brain Transplant

[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, ...