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gbyleveldt last won the day on August 24

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  1. There’s nothing to set up. The unlabeled ground connection on the backup output connects to a relay inside the Goodwe inverter that ties ground to neutral when the grid drops away. Someone on this forum actually showed the insides of this connection. For the life of me I can’t find it but I specifically remember seeing it, with a comment to the effect of “putting the debate to bed, with pictures”
  2. As I said above. Just go have a look at the Goodwe python stuff linked above. Pretty much all the hard work has been done already. No need to re-invent the wheel
  3. That sounds...difficult. I simply used an app called tPacketCapture on an Android tablet that had PVMaster installed. Those saved captures were opened in Wireshark and it gave an idea of what was happening. Nice and simple. @mletenayactually used some hacking process to decompile the PVMaster app and managed to get much quicker results than I had in trying to decode the protocol. Be that as it may, the UDP protocol is 95% understood and documented currently, so I seriously doubt anyone will need to go the packet sniffing route again.
  4. Yebo, you can’t use wire shark that way. While UDP packets are broadcast, your switch prevents those packets from flooding the network. The switch is routing the relevant packets directly between your phone and Goodwe dongle. It’s not available on the rest of the network. You’ll have to run a packet sniffer on the phone with the PV master app to get the relevant packets. That’s how I got the data initially. Head over to the GitHub page listed above. The integration has come a long way over the last week. Unfortunately it’s directly integrated into HA at the moment. Ideally it should be do
  5. That’s a LOT of PV panels. With only 16*405w panels I routinely generate around 5.7kWh when the batteries are charging. Today I generated 35kWh; I don’t know your Deye model, but I was under the impression those blend power?
  6. Working on it bud. I’ve identified some missing packets that I’m testing on my side at the moment, I’ve made note of it on GitHub
  7. Aaaaand we have liftoff. Still a few bugs to sort out with the parsing of the power figures but success! There's a loooot more info available from the integration but I'll add that once everything has been nicely verified. The author really did us all a solid by doing all the Home Assistant backend stuff.
  8. Now THAT would be an awesome biltong dryer. Hmmmm.
  9. If your discharge percentage is large enough then yes. But even in economical mode, if you didn’t set the discharge schedule, default would be to draw power from solar, then battery, then grid. It sees the grid as a last resort and has been working that way on mine, in economical mode, as I didn’t set a schedule for daytime
  10. Wow thank you! I’ve been meaning to spend time on this yesterday but life happened. I’m going to be messing with this this week and give feedback. Thanks again!
  11. Ho.Lee.Shit! Thank you thank you thank you! I see they posted it a few days ago, saved me a LOT of pain! EDIT: Ok, so that’s for the ET inverter, not the ES. That being said, all the heavy lifting has been done and the protocols are very similar (the ET protocol caters for 3 phase operation). Shouldn’t be too hard to add ES support in this seeing as I’ve documented that part. Still, saves a helluva lot of effort.
  12. Aaaaah ok, I see how you did it, Nice! It’s actually a neat idea to make it easy to implement and vendor agnostic. I’ve taken to hacking the protocol on my inverter in order to get the same data outside of Goodwe’s shitty cloud based api. But as with all projects, I’m a great starter...
  13. Man oh man that looks gorgeous! I need to get my ass in gear and get my inverter driver finished so I can also have pretty graphs.
  14. You've already spent north of R150k on your brand new system. Trying to save R5k per secondhand battery could potentially handicap your R150k system. It's simply not worth the risk. Spend the R20k, get another new US3000 and you won't have this nagging feeling in the back of your mind that there could be issues down the line. It's probably cheaper trying to get your night time consumption down a little...
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