OH3 - MySensors Binding

[Guillermo Schimmel]

Well it seems that there isn't and ther won't be a mysensors binding anymore. It was abandoned by the developer.

So as of december 2020, with OpenHAB 3, the way to go is plain MQTT.

I can't say I disagree really. MQTT is simple and works.

I'm going to start from scratch and try to document my experience here.

[Klabbe]

Sad to hear that. I really liked the binding. I used MQTT before the binding and it worked but the binding was easier to use with auto ID and so on. Looking forward on following your progress. I guess I have to do the same, when I find the time.

[Klabbe]

I'm thinking about running a separate instance of OpenHAB 2 under docker, just to get the mysensors binding functionality. Or can I get all the functionality of the binding, via MQTT? Like auto ID and that the sensor (like a watermeter) can request its previous value from the controller.

[Klabbe]

Running OpenHAB 3 as my main system and OpenHAB 2 with the MySensors binding, under docker, works great. I use the remote binding in OpenHAB 3 to connect to OpenHAB 2. Just make sure to run them on different ports if they run on the same server.

[Guillermo Schimmel]

@Klabbe great to know. Thanks

[haasje30]

Hello,
Is smartsleep option of mysensors is implemented in de mqtt gateway? I have some battery powered units to control blinds which I put a lot in (smart)sleep to preserve batteries. This functions well with OH2 and mysensors binding....I'd rather not keep and OH2 instance running next to my OH3 instance if not necessary.
regards,

[Guillermo Schimmel]

I think so. I have a lot of battery powered nodes heavily using smartsleep and they work just fine with MQTT.

[haasje30]

Thanks Guillermo, are you using qos 1 for this, or are messages kept on the gateway automatically to deliver to a sensor which is asleep. Think I have to rebuild my gateway to mqtt then....

Thanks.

[TimO]

I'll look into the changes needed to migrate the binding to OH3 and let you know.
Maybe it's no big deal and I'll provide a version 3 binding.

[Klabbe]

@TimO That would be very appreciated! I really like your binding and it would be great to continue to use it without an extra instance of OpenHAB 2. I tried to compile it and got like 10 errors. Since I have zero java skills, I was unable to fix them.

[haasje30]

@TimO, a binding for openhab 3.0 would be very much appreciated!

I have tried the MQTT gateway, and with standard setup, messages are lost wich are sent to the node when asleep. Does anyone know how to solve this. I didnt find anything in de mqtt-gateway config. I see mqtt messages which could be read by the controller (openhab), when the node goes to sleep and wakes up, but at this moment I don't see how to implement this in openhab MQTT generic things.

Thanks...

[TimO]

For those of you willing to help testing the OH3 integration here is a link:

Jar Download

Please don't forget to fulfill the requirements for mqtt und serial. Installation of bindings will do.

What's working after a quick test:

• binding loads in OH3
• serial gateway receives messages (ethernet gateway should work too)
• discovery is working

What's not working:

• MQTT gateway: it's broken some time and needs some tinkering

Please let me know if you found some time to test the binding.

[waspie]

@haasje30
smartsleep is easy with MQTT

Initially a few years ago i tried the binding and it gave me nothing but trouble.
While it was configured I'd watch MQTT to see what it would do.

2020-12-31 22:58:22 unoout/202/255/3/0/33 180000 (THIS IS THE SLEEP DURATION)
2020-12-31 22:58:22 unoout/202/255/3/0/32 500 (AT THIS MOMENT YOU HAVE 500MS to GET A COMMAND SENT)

So define a thing to the channel ending in 32.
Bind an item to that channel with an expire timer for like 10 seconds state = 0

then for your rule you'd have

rule "whatever"
when
Item whateverSleepItem changed from 0 to 500
then
whateverOtherItemThatIsSendingOutACommand.sendCommand(ON/OFF/WHATEVER)
end

[haasje30]

Thanks TimO and waspie. At this moment I have one mysensors hardware gateway, which is connected to my openhab2 instance. I have an OH3 test instance, and no hardware controller for this (yet). I did an short test with my current controller, but this is not the best way for me. So I orderded an wemos D1 mini to create a new mysensors gateway. As soon as this is in I will be testing. Thanks again...

[Dbagioni]

This post is deleted!

[waspie]

@haasje30 if it's mqtt both can subscribe at the same time

[Klabbe]

@TimO Thank you! It works for me with my Ethernet Gateway. I don't have that many nodes but the ones that I have, works as good as they did with OpenHAB2. I have a watermeter, an actuator and a door sensor. Great work!

[TimO]

@Klabbe thank you for your feedback!

[Guillermo Schimmel]

@Klabbe great! perhaps I'll go back to ethernet gateway. Do you think is better option over mqtt gateway?

[haasje30]

Hello,

I did some testing with 2 openhab versions to one ethernet gateway. At first it did not discover any devices, thats because they were allready discovered in the old (2.5) version of openhab, I Think, because when I created a new mysensor device,it was immediattely discovered by the new openhab. I noticed a minor problem, there is an ability to scan (and because auto discovery did not seem to work I tried this), but after a scan the ethernet gateways failes. When you try to add a device(manually), it goes back to the first page when you select the gateway. I had to restart de openhab service to get it running again.

I tested with a new blinds sensor (with smartsleep), and smartsleep seem to work OK. So I prefer this binding over de generic mqtt binding, because stuf like request() and smartsleep() work 'out of the box'. These are my fisrt tests, I will be doing more (other sensor types) later on when I have an additional gateway available.

Regards...