remote load enable/disable not workling + other stuff

[Rootthecause]

Hi,
I got the ACOOLOO 180W Load (DL24P) variant from amazon https://www.amazon.de/gp/product/B098FCZJJF/
So far the logging and internal resistance measurements is working fine, however I'm unable to en/disable the load via the gui, only pressing the button on the load itsself is working.

Also some small things I like to mention:

• Running on MacOS 12.5.1 (M1) for install PyQt5 was needed
• During the measurement small spikes appear (at 1A load they were between +0,1 and +0.2A) . I'm unsure weather this is a glitch in communication or actual happening on the hardware. The big peaks are from the resistance measurement.

• the x/y coordiantes on the top right are nice, but it would be even cooler if they display the voltage too and not just the current
• the Zoom to recatangle and settings for the max/min axis values are (also) resetting as in Current axis scale resets to 10A on each redraw #13 described

Questions:

• what is r_a exactly? I think r_b is the internal resistance, right?

Request:

• increasing the resolution of the WH capacity (currently one decimal place, maye do the calculation in the programm instead taking the value from the board?)
• adding the external temperature sensor for battery temps (its currently only displaying the internal one)
• adding a third axis for the temperature sensor(s) and adding one decimal place as well if possible (the board got the missing decimal on display)
• is there a way to use the load for charging measuremens as well? I'm thinking about plugging an external power supply to the positive input, then the battery with plus on the negative input and the negative psu to the negative battery pole

I'm really liking your project - it makes this capacity tester at least 200% more useful! Great work!