ESP32DWROOM external antenna
16 Modules V4.40.
After several hours of operation the WIFI connection does not answer.
The controller works.
I can see data’s sent via CAN on my Victron.
Also the display works. And the switches.
The display shows the right IP.
But if I try to open the website no response.
Only power reset helps. For further several hours.
The heat shield is hand warm. So it seems the ESP has work…
Any one else with this behavior?
I want to figure out:
Do I have a weak ESP? or
Is there a problem in the software? ( Release 43 )
I hadn’t had any problems wit board V4.2 and SW release 16.
I can confirm this with my 4.2 board and release 44.
The device works fine but the web server does not respond.
In the network the device is pingbar with me, with you also
I have a workaround:
Let the controller run normally, since do nothing. Turn off your WLAN briefly at the router and then turn it on again. Then it should work again. I haven’t had time to look into the debug console yet.
I use Unifi AC Lite devices for Wifi. When the ESP32 hangs I can still ping it through wifi. I don’t think it’s a communication issue, its something else. For me it still hangs and it happens every 6-12H. Only reconnecting ESP32/controller power helps.
I’ve changed my ESP32 from a non-antena version (the one with antena on PCB) to a external-antena-version (the one with a 10cm wire and screwed-on 12cm long antena) and the hanging stopped, works stable now with uptime 3d15h.
In my case, after changing the ESP32, in past 7 days the system works very stable, no issues. This could mean the problem is in the ESP. Maybe try a diffrent type of ESP32, there are some minor changes in the build… just guessing.
I must have tried 3 different types of ESP32 now. With all of them the web server does not work at some point. When the error occurs I have tried with different devices (PC, tablet, smartphone) to get to the website. It does not work from any device anymore, you get from the browser “ERR_CONNECTION_RESET” or “CONNECTION_RESET, -101”.
But you can still ping the ESP32 in the network, that’s no problem. I have also run the serial console.
After this entry, no connection with the web server is possible anymore:
“(1002258) diybms-webreq: API call: monitor”.
Here is the log file, but I don’t see anything abnormal diybms.txt (906.2 KB)
Here is a log file where I deactivated and reactivated the WLAN: diybms_wlan_off_on.txt (163.2 KB)
(Hier habe ich mit dem Browaser zugegriffen “(4042403) diybms-web: default.htm”)
What helps is a reboot or deactivating and activating my WLAN. Then the ESP32 connects again and it gives good again for a while. This can take a few minutes, hours or days. It can’t be interference from inverters etc., they are currently off.