So I’m finally getting a chance to look through the new firmware on the OpenEVSE and setting up the items in there I want to utilize. As soon as I get my solar installed (I’ll be installing it, already have the Schneider Inverters mounted and partially wired) I’ll get Shaper back up and running as I loved that back at my old place. But now I see Vehicle which looks like a way for the EVSE to talk with the vehicle. I see the option for Tesla, but also MQTT and HTTP. I was wondering if there was any documentation for how to use those. I have an EV6 and a BMW X5E (hybrid), but am not sure where to start or if there was documenation for the OpenEVSE on how to use MQTT or HTTP.
Bueller?
If you select MQTT you’ll see the options to enter the MQTT topics for vehicle SoC and Range etc:
Good luck with your solar install, very exciting!
I guess I wonder. Does the OpenEVSE read that back from the vehicle and the MQTT is just a way to send it back to EmonCMS?
No, there’s no way for OpenEVSE to read the SoC from the vehicle, unfortunately two-way communication is not part of the J1772 protocol. The MQTT topics are to provide the OpenEVSE with a SoC reading. The SoC reading will need to be obtained and posted to MQTT via other means e.g manufacturer cloud API, OVMS etc.
Ok, that’s what I was thinking WRT J1772. Have to look into how to pull those from the vehicle, if possible. Thanks, answers the questions I had.