A simple module for calculating distance and depth measurements with an HCSR04 Ultrasonic Sound Sensor and a Raspberry Pi.

sudo pip install hcsr04sensor

The module does the following;

• Returns an error corrected distance by using the median reading of a sorted sample.

• Rounds the value to a specified decimal place.

• Adjusts the reading based on temperature by adjusting the speed of sound.

• Allows measuring distance and depth in metric and imperial units. See;

  pydoc hcsr04sensor.sensor

See example scripts in https://github.com/alaudet/hcsr04sensor/tree/master/examples.

Access to Raspberry Pi GPIO pins require elevated priviledges. Run example scripts with sudo.