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So technically this could be done also for the rp4 right? Connecting the 3 cables directly to the GPIO pins I mean. How would you go about getting the python script to work on the esp32?

I want to try and use the GPIO pins instead of connecting through usb. Was thinking about trying this out: https://www.amazon.com/gp/product/B07PFB4MHR Also - would the script for pulling the data need to be modified a lot?

Anyone tried to pull data from a Renogy 10A to an esp32 microcontroller? Would love some insight on how to actually connect the RS232 to it.

What could be causing an error. "Failed to read from instrument"? I got this to work, but needed to reformat the sd card. Using the same hardware but this error keeps showing up. Using the Renogy Wanderer. Any debugging ideas - Kind of banging my head on the wall here. Here is the full output...

Any pics or explanation on how you modified the USB cable with this?

I'm seeing only RJ12 6pin rather than RJ11 - this correct?

Thanks a bunch! Will be trying this. Anything you found that would be a more "elegant" connection? For example would a rj11 to USB connection work? Such as this: https://www.amazon.com/dp/B0855JVX5W

Trying to understand what cable I need to connect the Renogy wanderer 10amp to the pi? Can't seems to find the correct connection!