The information, below, was posted on the Renogy Forum by a user with the screenname lindsey. The forum recently moved and the documentation was temporarily lost. The information was reposted; but I wanted to put it here for easy reference in case it gets lost again.
This information is about connecting the Renogy Rover to the Raspberry Pi for monitoring.
First, here is a general link discussing connection of the Raspberry Pi to a solar battery charger.
Here is the wiring diagram that the Renogy Forum post provided:
Here is a sample output on an Android from the Python scripts.
Here is a sample database query.
The diagram, below, is a diagram of how the Rover’s RJ-12 port splits out into RS-232 signals. Note that only TX, RX, and ground are used.
The link below was put together by lindsey. It describes the needed hardware (in addition to the Pi) as well as the general functionality of the Python code.
Finally, here is a zip file with the Python code. Unfortunately, I do not have a way to contact lindsey. The code comments say that her name is Lindsey Crawford. If anyone knows how to contact her, please let me know.