[Clint] was working with the Arduino library, based on the Parallax PING, which uses a single pin for trigger and echo. The HC-SR04 uses separate pins. Originally he modified the Arduino library ...

In truth, my intent is not to provide a new translation of some well-worn “Arduino & Ultrasonic ... measurement with a plug-in HC-SR04 module to display results (distance in centimeters) on an ...

We don’t know if [Hanna Yatco] has a good sense of balance or not, but we do know her Arduino does. Her build uses the ubiquitous HC-SR04 SONAR sensor and a servo. This is a great use for a ...