Cannot Connect new Devices to conbee II Stick

Configuration Zigbee
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3

Hey,
Thanks a lot for the response!
I read, that it’s only supported up to 24 Devices with ZHA.

4

Not sure where you found this 24 devices limit. Read this post in particular, that gives more in depth explanation on limits. So this is not network limit. I do not use ZHA, but I’d be surprised if it would have such limit:

1 Like
5

Rwad the whole ZHA integation documentation and you see that is not a limit, however you are going to need to add more Zigbee Router devices to increase the total amount of devices you can add

Also read and follow this

6

Hey, thanks for the response.
I found the 24 devices limit without any repeater for the ConBee II Stick. With repeaters, it’s much, much more. But without, it seems like there can be only 24 active connection.

I asked a new question with more detailed information. If you are interested or maybe even have some idea on what’s wrong, I would be more than happy to head your thoughts:

Have a nice Day :slight_smile:
Noel

7

Hey Hedda

Thanks for the response. I re-asked the question with some more information. Maybe you have an idea what’s wrong with my current setup?
Would be more than happy hearing your ideas :slight_smile:
Have a good one
Noel

8

You are going to need to add more Zigbee Router devices before troubleshooting any futher, even if that means that you first have to unjoin:remove a few Zigbee End Devices and join/add them back later. Start by reading and try to follow all the best practice tips in this guide first, if you do then your problems will likley go away or the problem symtoms will become clearer as remove low hangibg fruit issues:

9

Hey
Sure, I will try. But I am just not sure how or what devices. I use hue bulbs for all my house, but I don’t want to connect them via ZigBee. The Hue hub is really reliable since years, and we have some feller switches and I need to reconnect them all.
I already ordered another hub, but it cannot be paired (maybe same issue as the other devices).

So you have any idea what device I could use as a good repeater? Because behind all Power plugs I already have Shelly’s (so plugs don’t make sense), lamps I don’t want to change.

10

The guide covers that, so read it.

11

Sure, I will this evening. I am at work right now. But thanks a lot for your help!

12

I have read the guide and I also ordered an Aotec Zigbee repeater. But I cannot connect it with my ConBee 2.

13

It should join/pair with ConBee and work regardless if using the ZHA integration, Zigbee2MQTT, or deCONZ.

Be sure update ConBee firmware and use a USB extension cable to it via a USB 2.0 port to avoid interference.

Again, you might first need to remove a few other Zigbee devices in exceeded maximum or direct connect devices.

15

Hey

Now, you mentioned USB 2.0. I had my old stick plugged in the USB 2.0 Post and now my new one in the 3.1 port. Why should I use the 2.0?
Also, I ordered a USB 3.1 Extension cable, but It’s shielded to avoid interferences.
So my questions now are:

  1. Is it okay to use the 3.1 port or better 2.0
  2. Is it okay to use a 3.1 shielded extension cable?

I didn’t think about this, but why is it a problem?

Also, another question:
Do you know how I can update my ConBee III stick within ZHA? Do I have to use the command shell in HA?

Thanks a lot for your time and help! i hope i can fix it soon :slight_smile:
Noel

16

USB2 is preferred

I think you need to do it outside HA

17

Thanks a lot for the response :slight_smile:

But the USB 3.1 Shielded extension cable is okay?

18

Does not hurt, so yes.

19

Thanks :slight_smile:

20

Connecting with a USB 3.0 extension cable to a USB 3.x port can cause EMI interference, (and worse is having other USB 3.x devices close to the Zigbee radio).

It is ok to use USB 3.x cable to a USB 2.0 port, but not OK to use it with a USB 3.0 port. If only have a USB 3.x port then must use a USB 2.0 cable or a USB 2.0 hub so that the port get used as a USB 2.0 port.

That is all covered by the guide (in detail and with references). The point with with me writing that guide is so that it does not have to be explained seperatly to each person individually :stuck_out_tongue_winking_eye:

Please read the guide and only ask about stuff not covered by it if possible.

21

Thanks for the response. I read the Guide before, it’s an excellent Guide.
But I didn’t catch on the USB stuff, I didn’t think much of it because I was pretty sure that i replugged it into the 2.0 Port. Only after checking it again when you mentioned it, I found out that’s not the case.
I will try asap at home. Sadly, I am now in the holidays for a week, so I can only test it in a few days.

But thank you all for the help, much appreciated!

22

Hey
I changed it now and attached the 1.5 meter cable between the raspy, and the ConBee III.
Sadly, there is no difference at all. Still only the few devices connected via the Hue Plug, also I cannot add new devices. It’s still stuck on interviewing the devices.

23

Was that to a USB 2.0 port or did you use a USB 2.0 extension cable?

What else you can try is to first remove a few Zigbee End Devices and then add a few more Zigbee Router devices before add back any Zigbee Router devices. Buy some known good Zigbee Router devices or make a known great DIY Zigbee Router devices by flashing extra Zigbee USB dongles. All as per the guide.

But devices stuck on interviewing is usually (however not always) a sign of EMI interference so you should still also continue to take as many proactive measures for that as you can. Again as per the guide.