Awesome

Ultrasonic HC-SR04 library for Arduino

Features:

• Compatible with the Arduino IDE 1.0.1 or lower
• 3 ms of TimeOut (51 cm) - Adjustable (Wiki)
• Support for more than one ultrasonic sensor

Wiki

• How to change the default TimeOut?
• How to plug the Ultrasonic HC-SR04 into the Arduino using the example PlugAndPlay

License

This code is licensed under Creative Commons Share alike and Attribution by J.Rodrigo.

Other Things

• Mi Twitter: @javrodara
• Ardublog (Mi blog en español sobre Arduino)
• Ardublog - Libreria para Arduino del modulo Ultrasonic Ranging HC-SR04