Got a second SonOff USB dongle, flashed it to be a repeater, but can't get it to join the hub.
I've reset it (power up and press the top button) a number of times, have unplugged and plugged it back in, moved close to hub, it just won't join.
Appreciate any ideas...
I had the same issue. It wouldn't join my C7 on channel 25, but did join my dev C7 on channel 19, but not sure if that's the core issue. I triple checked my firmware flash, but it never joined
Interesting - I have two hubs, main one on 20, secondary on 25.
I have one dongle on my main hub (20) and this new dongle won't join it or my secondary hub (25).
I'll try changing the secondary hub to 15 (channel recommended by @ogiewon in a thread a while back) and see what happens.
The Sonoff is a newer device, seems odd that it would be so picky about Zigbee channels...
Same on 15, no joy. Think I'm going to have to flash this one back and then do a return unless some good idea shows up. 
I had to hold down the button while inserting it into the usb power supply. I have 5 of these. 2 on channel 19 and 3 on channel 24. I’m using the dev firmware.
Or, if that doesn’t work, they are supposed to be in pairing mode as soon as the firmware is flashed. I originally just paired them immediately while they were still plugged into the computer.
Thanks for the ideas.
Holding the button didn't work, unfortunately.
I'm going to try flashing it again and then trying to pair immediately w/out doing anything. I tried that the first time I flashed it, but we'll see if another try makes it work.
Reflashed and no joy joining right after. Flash looks good:
More and more thinking restore to original FW and return...
It took me a few tries to get a couple of them to re pair after the last update I did a few weeks ago. 
Oh wow, it heard you or me talking.
Tried something new...started pairing on the hub first, and then pushed the button on the Sonoff really hard...finally joined.
Instead of coming in as a "Device" like my other Sonoff - it came in as below:
A bit odd, but I'll take it. I've changed it to what I'm using on my other Sonoff and Tuya repeaters:
Moved it to the kitchen cabinet where I have the other dongle plugged in and going to bed happier than I expected. Thanks for all the help, your suggestions got me to keep trying.
When pairing Zigbee devices, I start with them about 20 feet away from the hub and in direct line of sight. I then start pairing on both the hub and the device. I then start walking toward the hub. Usually, by the time I get to about 10 feet from the hub, the pairing is completed. Although it might pair with the device stationary, it seems to me that the movement towards the hub seems to work better. The antennas has strong lobes and weak lobes, so movement insures data gets transferred between stronger lobes.
Although that's a good idea, I'll usually wear a mylar blanket to drown out the radio waves from my amalgam fillings, with my left hand covering the bottom half of my right earlobe with a ground strap on my right ankle...works everytime
I know what you mean...it is funny how these situations are fraught w/opportunities to define actions that may be totally unrelated to eventual success.
I have no idea if any of my actions, the channel change, or pressing the reset button when inserting, or reflashing the dongle, or starting pairing first on the hub and then pushing the button had any real impact on my final success. Maybe it was just finally dumb luck that made it work. I know that I am NOT going to remove and try to re-pair it to try to figure that out. 
I really think it was that the moon was temporarily covered over by clouds and that was what fixed it.
This is how powerful myths are created... 
I still think it was the tight leather pant you were wearing on that last successful paired.
Damn, I keep forgetting to turn off that one camera...
This topic was automatically closed 365 days after the last reply. New replies are no longer allowed.
Download the Hubitat app
