Integration for Arduino/ESP32

[chrishrb]

Have you thought about an integration for Arduino/ESP32? Is this even possible?

[pkwagner]

The underlying yasdi library requires a fully-functional operating system like Linux or Windows, so unfortunately, compiling the project for microcontrollers won't succeed. If you wanted to use an ESP for this, you needed to re-implement the whole (outdated) SMA protocol just to save a few bucks.

However, Modbus IP might be another great option for you. These adapters[1] connect RS485 directly to a Wi-Fi network and usually cost even less than an Arduino. You'll still need to set up yasdi2mqtt somewhere on your network, but the server doesn't need to sit next to the inverters, hence you can simply use your existing home server for it. Theoretically, you could even run yasdi2mqtt in the cloud then.

You'll also find some further reading regarding Modbus IP here[2]. Maybe @AlexanderSch90 can give you more advise, as he has this setup in use for his inverters.

[1] https://www.aliexpress.com/item/32916128353.html (just an example, didn't test this specific adapter)
[2] #1

[chrishrb]

I think that needs more work then it saves me money, so i will try this repository on my raspberry pi.
I wasn´t sure if the yasdi library would work with a microcontroller - but without this lib its not worth spending time.

Thank you for the answer and this very nice repository!

[pkwagner]

Great choice, let me know if you encounter any problems.