Going Solar - Adding a solar PV battery system to our house

[Space_ranger]

Great set of videos! I’ve got a similar problem and wanted to ask about how to build the AC side of the circuit. I have the power data scraped from the inverters modbus port so just need to simulate the signal for the harvi.

I’ve found some ac 240v to 5v transformers so was planning to put that into a small box with an esp32. Then use the esp to generate the signals to control the simulated ct clamp.

I just can’t work out what components you’ve used or how the ac part functions. How does it deal with the ac? A lot of the components I’ve found for variable resistance only allow dc

[routercnc]

That’s why it took several months to solve the problem. The Harvi needs a varying AC current to determine the current in the cable (using a CT clamp). Getting a simulation of this signal took some working out.
My solution uses an AC transformer (AC to AC) and an LED/LDR combination to control the AC current. I couldn’t find another way to do it. The LED is pulsed by the microcontroller and this varies the LDR resistance in the AC side. That is the principle but it also took several hundred lines of code.

What system have you got in terms of panels, batteries, and inverter?