However, the reported values of temperature and humidity sensors who are correctly initialised at integration time remain forever frozen, while the displayed values change significantly.
I have two SNZB-02D devices, both have the same issue.
I have also coupled these two devices to a SONOFF ZBBridge, in that case, temperature and humidity are correctly reported to the eWeLink App on my iphone.
So, the problems seems to be in the coupling with the ZigBee dongle.
Any help on this would be definitely appreciated !
Francis, thanks for your feedback. The dongle is plugged directly on the USB port on the khadas board. and I had the sensor located at less than 3 meters of the dongle.
Anyway , after performing a second, then a third pairing, I have finally both sensors reporting temperature changes !
@Hedda: Thanks for the feedback and providing the link to your great Zigbee interference guide !
The malfunctioning devices were less than 2 meters from the Zigbee dongle, so it could not be a range issue.
As mentionned earlier, I finally managed to get the devices reporting the temperature, however one is still not reporting the humidity …
I am quite puzzled with a mention in the guide:
While both ZHA and Zigbee2MQTT do support older Zigbee Coordinator adapters based on the old Texas Instruments CC253x (CC2530 and CC2531) they are not recommended any longer, so spare yourself the potential grief and instead just buy a newer Zigbee Coordinator adapter from the start.
I have bought quite recently the Sonoff Zigbee 3.0 USB Dongle Plus , and yet HA indicates the coordinator to be Texas Instrument CC253x ??? (see screen copy below.)
Do you think I get an outdated firmware on this Dongle ? Should I try to upgrade the firmware ?
Regards
Such pairing issues symtom are common when have interference and usually due not using a USB extension cable to get it away from the computer and other devices + make sure connecting it to a USB 2.0 port and not to a USB 3.0. Read and try to follow the linked guide, it mentions this several times and even has a video showing an example of how the radio adapter behaves when too close to the board.
Yes I do use an USB extension, and I use many zigbee devices without any problems. For one test I moved the sensor directly near the ConBee II Stick. Didn’t help anything.
Any updates regarding solving this issue? Same happened to me just today as stated in first post, snzb-02d connected via sonoff dongle without usb cable extension and worked for weeks perfectly.
Update:
After going into sensor settings and disabling and enabling humidity as well as temperature entity, sensor started to report changes instantly just as it used to be.
Hope that did the trick for good.
Note: I performed the update 2024.9.1 during the day, but noticed the issue at the end of the day. So I hope it was related to the update.
Hi,
I have the same problem with all my 9 SNZB-02D temperature devices since yesterday. Previously they had reported the values perfectly and since yesterday the temperature is no longer updated, only when HA is restarted or at some random time that I can’t explain. The ConBee2 is 2m away from all the electrical appliances and directly located next to one of the temperature sensors. Also, I have 7 Zigbee bulbs (E27) and 6 Nous A1Z smart plugs spread throughout the flat, so I can’t imagine it’s a signal issue. I think it would have had to work with at least one of the sensors during the tests.
Could it be due to the core update 2024.10.1 that I installed yesterday? At least the timing would fit. And how many Zigbee devices can a ConBee2 actually manage?
Update: temperature is reported every hour now (all 9 SNZB-02D), but humidity is reported immediately after state change.
How are you disabling these entitities ? in HA or at the device level ? I tried in HA configuration and it is still stuck at the same temperature in HA whereas the displayed one is evolving
any idea why the SNZB 02D is not reporting - it seems to me it is some bad firmware. i just want the device to send TEMP and HUMIDITY every minute. Which it does not. there is obviously to tweak to fix that.
the SNZB 02 does this - sending both values every x minutes. regardless if there is a change or not.
blue+red=02D
green= 02
yellow= LYWSD03MMC-z
conclusio: as sonoff known how to do this, the firmware is crap!
i dont need a display device with zigbee when zigbee doesnt work properly. i rather go with a dumb device for a third the price.
