Ultrasonic HC-SR04 Library for Arduino

This is a simple to use Arduino Library for the Ultrasonic HC-SR04 Module.

Features:

• Compatible with the Arduino IDE
• Supports more than one ultrasonic sensor
• 100 cm default Timeout - Adjustable (Wiki)
• Adjustable Temperature (default 22 °C) (Wiki)

Wiki

• How to change the default timeout?
• How to change the default temperature?