Devices always get disconnected

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rns asked Dec 17, '22

Devices always get disconnected

Since I added a second bms and second smartsolar controller my rapsberry pi3 started crashing (at least no network connection at all)

I bought a new raspberry pi4 4gb and now my devices get disconnected all the time.

Anyone having the same issues ?

How to solve it ?

My devices are connected via the DIY rs485 to usb connector cables but it is strange that they work when I reboot but get disconnected sometimes after a few minutes sometimes after some hours.

Connected devices ;

2 BMS's

2 smartsolars

1 multiplus II

![image](https://user-images.githubusercontent.com/24300782/208190830-c54cb980-686b-4a81-a406-17b83c5516bc.png)

At this moment one BMS, one smartsolar and the multiplus are not connected.

If I reboot the PI they are all live again at least for some time (from minutes to hours)

Sometimes they are all disconnected.

Venus OS

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Modifications Space

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Answer 1 · 2022-12-19T15:42:00Z

rns answered · Dec 19, 2022 at 03:42 PM

Did a test over the last day and only kept the multiplus with the mk3 connector to usb and one smartsolar inverter connected and had no disconnections.

* is number of devices an issue ?

* are the diy cables an issue ? Now only one DIY cable is connected.

1

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gnagflow commented · Dec 21, 2022 at 07:52 PM

Maybe some kind of isolation problems, plug for every usb connection an usb isolator in between

0 ·

Answer 2 · 2022-12-27T20:03:08Z

rns answered · Dec 27, 2022 at 08:03 PM

I start to get this issue as soon as I add 3 devices with a DIY cable/When I adde a victron BMS.

Not sure if this conclusions is correct.

Everything works fine with Multiplus MK3 cable and two smartsolar chargers with DIY cable.

As soon as I add a BMS I start getting disconnects and all devices disconnect so BMS, smartsolars and the victron..

Can someone help with this issue ?

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Answer 3 · 2023-01-16T18:09:13Z

rns answered · Jan 16, 2023 at 06:09 PM

anyone with the same issues ?

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