I am trying to solve an interesting problem. As soon as I connect monitor to the CERBO v2 to the HDMI port, the communication with JK BMS on the VE.CAN 2 port stops working. I tried other CERBO, the latest version of VENUS os, and the beta version, but it didn’t help. 3 different displays (2x USB p…

As soon as I saw your post, I read the change log and updated my cerbo. restarted, connected display and … wait for it… both CAN communication is running!!! I left it alone for about two hours just to see and then just to test it I did a SW restart. After the restarted up, communication still wor…

Ok so what that tells me is either 1 The monitors you are connecting are not compatible with Cerbo Or 2 The Cerbo is faulty. All you can do now to prove this is to connect GX Touch Display Please let me know what you decide to do.

I tested second cerbo. Same result. I don’t have GX touch available. I guess I’ll have to buy it. I’ll try to borrow it somewhere. Anyway, thank you very much for your help. I’ll let you know when I have something new.

HI. After some time, I managed to arrange and borrow a new GX touch 7. Original victron. And I’m glad I only borrowed it. Communication also fails. So there is no problem with the display.

@KRUP85 Ultimately then this is an RMA case.

No, I try 2 cerbos. It is not HW problém.

You are saying the cerbo can fails with your hdmi set up. [image] Petr Kroupa: Communication also fails And now you say the can fails with an original screen. The conclusion is both the cerbos have a problem with can 2 useage in your set up. Maybe bothe have a problem? Return for the rma. T…

after everything I tested I’m sure it’s a problem in venus os. So there are solutions for me. 1 -Don’t use a display directly connected to the cerbo , 2 - connect MPPTs with ve.direct as you write 3- fix SW problem in venus.os I don’t want to do option 2, option 3 doesn’t matter to me. So I’m c…

[image] Petr Kroupa: Don’t use a display directly connected to the cerbo , Easily a solution with WiFi and lan connection. Only other thing is possibly you have not used the ve can terminators? These add stability to the can network.

already done :wink: RPI4 + lcd touch terminators used, with or without same problem

Hi @KRUP85 , There are more reports of VE.Can port 2 not working correctly on the Cerbo GX Mk2. We are working on a solution for that. However, we have not seen any systems with a failing CAN port only when the HDMI port is connected. If I understand this correctly, CAN communication on VE.Can port…

HDMI connection breaks the VE Can 2 port

DIY

lxonline (LX) 5 December 2024 15:57 36

@KRUP85

See this post here.

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HDMI connection breaks the VE Can 2 port

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