BugsRSA

@Sc00bs are you referring to the 16kW Deye or is it a 8kW? Just asking as Deye sent me 2 bin files. One for inverter and one for the screen. Don't want to flash unless nothing else works.

Further update: This morning some signals started again to display weird values every 12min or so. Tried to see if I could find any correlation. Then I remembered your comment about EMI. My ESP is right next to the inverter. So as a test I moved the ESP and just let it hang, about 30cm away. Thus far I have not seen any signal with weird values…. Planning to extend all wiring and place the ESP further away from the inverter. If it is really EMI, then the EMI levels get too much when the DC from the panels goes above a certain value, as this does not happen at night when no DC is being generated. The above is still a theory for now 😊

I tried both pin 1 and 2 and also 7 and 8 on the same port with no difference. Moved the plug to the dedicated Meter_Con port without restarting the inverter and the values that came through were all correct. Must also point out that everything ran fine on the RS485 port for roughly 8 to 9 hrs before the values became garbage. (Garbage meaning grid freq had values in the 300's, SoC went into the 2000%, etc) Non the less, I might one day move back to the RS485 port and start a structured fault-finding expedition to isolate the fault. For now, all is working past the dreaded 9hr mark 🙂

Happened once, restarted, happened the next day again. Then without restarting I moved the RJ45 to Meter_com port and it worked. Also emailed China support. They sent me a new firmware. Think I'll wait with flashing until something happens again.

Another update. Saw on this thread someone with similar issue but with the 16kW version. Moved my RJ45 to Meter_CON port, values are now normal/correct. Let's monitor and see how it goes.

Just an update: Comms are fine for 9hrs, then i start receiving garbage values. Even if i restart the ESP or reprogram, the values are garbage. My only conclusion is that there is a bug in the RS comms on the inverter.

Haha. Also using a buck converter. But saw some didnt connect the +5v to the max485 pin, so didnt connect. I connected it now and that seemed to help. Also changed refresh rate to 10s but updated the throttle to 75ms. So far so good. Will monitor....

@Sc00bs you mention in the video that you have a Deye 8kW and use pin1+2. In Deye manual, pin1+2 is marked as RS485+Meter_Com while pin 7+8 is marked as Rs485A+B. Will that make aa difference? Note: If i can get an RS485 shield only, that would be great. 🙂

Hi all. I'm in need of some opinions. I when through all the forums, did the setup on me ESP32, using Max485 and a Deye 8k. My setup looks similar to I also removed R7 since it messed with the comms. I added the 200Ohm resistor and 3.3v zener to drop the Rx voltage to 3.3 range for the ESP32 (as the Max485 module does 5v). I also used pin 7&8 on Rj45 (since the Deye manual shows RS485 to be on 7 & 8). I get comms, values coming through for abour 5 min, the the values becomes bigger than the expected ranges. Then a few cycles later they are as expected. Below is a graph of the frequency, which should stay around 50Hz and not 300Hz... This is just one of the signals that does this (my batt SOC sometimes goes to -2000%, etc) I also get this in between on the logs: Any suggestions on what to look for?

Hi Robbo, can you share your NodeRed flow? I want to do the same thing and it would be great to get a flying start on the flow.