Last time I used an HC-SR04 with a Teensy, I just wired the TRIG and ECHO pins together and told the NewPing Arduino library to use the same pin for both functions. I’m not sure where I read ...

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 ...

[Arduino and HC-SR04 photo from Blax Lab] Posted in Arduino Hacks, Holiday Hacks, Software Hacks Tagged arduino, HC-SR04, Parallax Ping, ultrasonic, ultrasonic distance sensor.