KellerLD-python

A python module to interface with the LD line of pressure sensors from Keller. Tested on Raspberry Pi 3 with Raspbian.

See the Keller Communication Protocol 4LD-9LD document for more details on the I²C communication protocol, and the Keller 4LD-9LD Datasheet for sensor specification details.

Requirements

The python SMBus library must be installed.

	sudo apt-get install python-smbus

Installation

Run the following to install KellerLD-python

	pip install git+https://github.com/bluerobotics/KellerLD-python.git@master

Example

Check the minimal example available here.

Usage

    from kellerLD import KellerLD
    sensor = KellerLD()

init()

Initialize the sensor. This needs to be called before using any other methods.

    sensor.init()

Returns true if the sensor was successfully initialized, false otherwise.

read()

Read the sensor and update the pressure and temperature.

    sensor.read()

Returns True if read was successful, False otherwise.

pressure()

Get the most recent pressure measurement.

	sensor.pressure()

Returns the most recent pressure in bar. Call read() to update.

temperature()

Get the most recent temperature measurement.

	sensor.temperature()

Returns the most recent temperature in degrees Centigrade. Call read() to update.