HC-SR04 Isn't the Same as Parallax PING))) But It Can Pretend to Be! - Hackaday

Hackaday

HC-SR04 Isn't the Same as Parallax PING))) But It Can Pretend to Be! Hackaday [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 to accept the two pin approach. But with his long term ...