Here is a peek at PWM.
This shows:
1. The graph is produced by a PHP program located on the RPi. The RPi runs apache2 web server. You can see the IP assigned to the RPi by my router in the houser.
The RPi is located in my van which is parked at my home. The screenshot was made from my computer inside the house. I can view from any device with a web browser, e.g., my smart phone or tablet.
2. PWM - The cursor position is to indicate that PWM% was below the Float% threshhold at 1:00PM. The controller is poised to switch to float Voltage if PWM% can remain below 30% for 1 hour.
It is unlikely that there will be a switch to float Volts because of the two 12V compressor fridges.
HTH;
John
