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Hi,
my name is Fabian - I am new to the whole topic with Victron and VenusOS / GX devices.
But I created a small script/module for the devices to connect Shelly 3EM smart meter.
You can find all details on GitHub: https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter
Hope that this is helpful for someone out there.
I would be very happy to get some feedback and input how to improve.
Cheers
wäre es möglich, die Einbindung auch für ein Shelly pro 3em zu realisieren?
Vielen Dank schon mal...
Heinz
The newer Shellys (3em is gen1, pro 3em is gen2) do have a different API. The Rest-API which ist used by the module resulting in a JSON-Reponse (see https://shelly-api-docs.shelly.cloud/gen1/), does no longer exist on GEN2 devices like the Shelly Pro 3EM (see https://shelly-api-docs.shelly.cloud/gen2/ ). Therefore I doubt that this module can work with Shelly Pro 3EM.
But Victron has already published a solution: https://github.com/victronenergy/dbus-shelly
Hi Trying to get it to Work . is it possible for you to make a more detailed instruction how to att hook up an SHELLY EM to Venus OS? Im a bit on thin ice with everything .... Thanx /MAttias @fabian-lauer
Apologies for coming up with a basic question but I'm very interested to test this script in my Cerbo GX. However, I do not know how can I have access to Cerbo GX OS to install this script/module. I have access to Venus on the raspberry pi but not to Cerbo GX.
Your support is apreciated.
Thanks for your script! I got a little problem with the vrm portal. In the remote console everything looks fine:
But in the VRM Portal I didnt see the AC Input?
Device list looks good:
Doey anybody have an idea?
Thanks, Martin
hast du eine Batterie angeschlossen? Das ist mir passiert, als ich keine Batterie hatte.
thx markus
thanks for the topic, will check this if i have my hardware
Would it be possible do add the support for Shelly EM to measure the production of a 1ph pv inverter (micro inverters)? Tia Mike
I think so.
I don't have a Shelly EM, so hard to test.
But I have Shelly Rgbw 2, which can also measure power consumption.
When I call http://192.168.2.104/status on this device I get a JSON output with a node "meters" there are some information in - how does yours look like
Really a great thing. Maybe someone can help me. I always get aborts with the following error:
Traceback (most recent call last):
File "/data/dbus-shelly-3em-smartmeter/dbus-shelly-3em-smartmeter.py", line 16, in <module>
import configparser # for config/ini file
ImportError: No module named configparser
What setup are you using?
I have only tested with Cerbo GX and latest firmware
Is there an easier way to "hardcode" the Shelly's IP address (and this is all I change in config.ini) into the python script so we don't need the configparser?
Hi - is possible...just do the following:
That should be all
FYI, I just briefly looked at your code on Github and I think you are counting the amount of Energy Forward/Reverse in the “wrong“ way. There were discussions about the way different energy meters count, like ET340 vs EM24. Can you please check?
Die Shelly 3EMs saldieren nicht so, wie es ein Zähler Deines EVUs macht. Du scheinst in Deinem Plugin aber davon auszugehen und übernimmst diese Werte in den DBUS.
Das ist ein Shelly Problem, siehe hier https://www.shelly-support.eu/forum/index.php?thread/8977-shelly-3em-phasen-saldieren-in-home-assistant/ (Post #16 rechnet es schön vor)
Will check your article and provide a new solution...
code changes are always welcome :-)
Hi @teemischer,
I checked the article and I guess I know what you mean - in the cloud-app from Shelly the diagram data is "wrong" - see attached screenshot yellow-box
For the calculation I use only the real time data - red-box.
I think that should be fine, also for the official German grid meters.
I know that I can't say what was really consumed on Phase A (in my case the pv-inverter is connected there and off course some loads).
So when I produce 700W of solar-/pv-energy and shelly says -668,3W on that phase I have currently no idea of the consumed 31,7W.
Maybe I didn't get something and my explaination is wrong.
So I would be happy to get more feedback and correct the software if needed.
By the way - I just noticed some strange consumption data in the VRM portal - maybe this related to the this issue - but lets discuss
This is EXACTLY what I'm looking for. 3 x Multiplus II in order, and already have the Shelly 3em installed. If it works, I owe you a beer!
FYI - deployed a new version with fixes crashing of script
https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter/releases
In detail: the regular loop was called by timeout_add() function, which is cancelled when function is not returning True at every call - this could happen in case of an exception.
Hi Fabian, i am also a software developer and would like to contribute on your project. I already fixed the issue on energy in my local setup. Furthermore, based on your project, I created a new project for using a Shelly 1PM to use it as a PV inverter in VRM. You can find my project here:
https://github.com/vikt0rm/dbus-shelly-1pm-pvinverter
Hi @vikt0rm,
thanks again for support - new version of script is now on GitHub - https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter/releases/tag/v0.2
Maybe this fixes also the point that @teemischer mentioned before.
I think the calculation is wrong - it is according to @teemischer comment.
Because when I check latest statistics for today - I fulfill a lot of energy from the grid (according to VRM portal), which can't be true, because of sun is shining and PV is doing a good job - grid meter is not "moving" and shell is also saying that I produce more than I consume, based on having a balancing meter (which we have in Germany)
@vikt0rm maybe you can check with your installation (don't know where you are located).
But currently I think I have to update the script a bit....not 100% sure how
You are right, your current implementation is the "kundenunfreundliche" variant. To make it "kundenfreundlich" you have to adapt your over all Forward to:
consuptionOrFeedback = (L1_f + L2_f + L3_f) - (L1_b + L2_b +L3_b)
All_Forward = consuptionOrFeedback > 0 ? consuptionOrFeedback : 0
All_Backward = consuptionOrFeedback < 0 ? consuptionOrFeedback * -1 : 0
Yeah - I thought of another implementation as I had a look in the vrmlogger which is collecting the data and uses "delta" loads and send to VRM.
Attached you find an Excel how I tried to calculate the "correct" values - also attached the script where I added a function _getBalancingMeterResult()
Maybe you can double-check I currently run the script in my local environment....with battery usage it looks ok....guess need to test a bit.
Hole idea is to do a realtime balanced meter calculation based on Shelly "total" values. Therefore I take a value and point in time "t0" and compare later values "t1", take the difference on input and output energy and do some magic (seeExcel)
https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter/blob/develop/docs/calculation-shelly-balancing-meter.xlsx
https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter/blob/develop/dbus-shelly-3em-smartmeter.py
On second try with a fresh brain this morning I was able to follow your intention :) Looks good and plausible. The new method in the branch does what it should do. I will test it in my setup and see if my consumption looks better when sun is shining.
But I checked yesterday at night and there is still a gab for me - official grid meter shows 3kW and VRM ~6kW for last 24h - a bit difference would be ok, because the official meter has not decimal place.
I did an update on the development branche on GIT.
In the Excel I added a sample with 3 time-slots.
And I changed the function a bit, because I just assume that on runs >1 the basis is wrong - should use the result of the previous run.
But I will check now
Would be great @vikt0rm if you can have a look - seams to be a topic for more than just 1 pair of eyes
I did some corrections to the script and the balancing calculation yesterday at lunch time - checked this morning and values are ok now - offical grid meter says 2kWh and VRM is a bit more precise.
Will check for some more days and push to main branch
Hi Fabian,
thank you for your great work. I have this running with my Multiplus as well and this saved me an EM24!
Regarding the summed backward and forward energy calculation: I solved this differently some time back in home assistant and just copied my code over to your implementation.
You get the correct summed values, if you sum up each watt (power) and convert to kWh.
Just exchange the two lines for forward and backward calculation with:
if (self._dbusservice['/Ac/Power'] > 0):
self._dbusservice['/Ac/Energy/Forward'] = self._dbusservice['/Ac/Energy/Forward'] + (self._dbusservice['/Ac/Power']/14400000)
if (self._dbusservice['/Ac/Power'] < 0):
self._dbusservice['/Ac/Energy/Reverse'] = self._dbusservice['/Ac/Energy/Reverse'] + (self._dbusservice['/Ac/Power']*-1/14400000)
The division by 14400000 derives from 60min x 60sec x 1/4sec x 1000watt.
You take a reading from the shelly every 250usec. I'm wondering, if the shelly provides data more often than once per second. Are you positive, this is really required or switching to 1sec is fine as well? (in that case the 1/4sec in the code above need to be removed)
Christian
Hello Fabian, can you publish your new script? because my representation in the VRM portal is also wrong. The grid purchase is far too high and solar is not taken into account.
Hallo Fabian, danke. aber für mich funktioniert es mit den änderungen von Xris99 perfekt. Die Daten stimmen jetzt mit Fhem, Netzzähler und Dashboard überein. Dein Treiber läuft ohne Probleme und anstandslos. Danke
Vielen vielen Dank für die Unterstützung :-)
Habe die Änderungen nach Git übertragen
Well I think wrong depends on your expectation. From what I can see from todays logs (I reset my data around 10am, since I am still in development) it looks promising. By the way, I am also located in Germany (Munich).
From what I know right now there exist "Phasen-saldierend" and something like "Summen-saldierend". Here is a good explanation https://www.messstellenbetrieb-bock.de/saldierende_Zaehler.php what can be the difference.
This is that my data shows in VRM:
And this is my graph from home assistant.
For me it looks good.
Edit:
Wallbox value is currently not part of the VRM implementation. goe-charger needs to be connected to VRM. That is my next task. :-) And yes the calculation needs to be adapted as stated in my direct answer.
Hello Fabian
Great! I've been trying to integrate an em3 into Venus for a long time. If I understand correctly, your python-script runs on Venus or does it have to be on a rasperry? Or have i do a script outside for example on a arduino? Sorry i am a little confused...
It has to run on the Venus/GX device hat is e.g. connected to the VRM because the script uses the system DBUS.
Hope my answer will help you
Thanks Fabian, now I understand a few things. But how the heck do I bring the directory with the files from Windows into the Venus. I tried putty. I can get in too, but I can't transfer the files. Unfortunately, I cannot find the correct syntax for the commands. Create directory, transfer file etc... The idea was to adapt the config.ini and transfer everything afterwards. It might work with your code, but how do I then adapt the config.ini in the venus. Thank you for your help...
Morning @highlander - if you don't want to use the script mentioned in the readme on the GitHub repo, use WinSCP for SFTP (basically SSH) file-transfers.
Change the config.ini to your needs.
Run the install.sh script.
That should work
Yes! Now it works with my multiplus 48-1600.
Soooo cool!
If you're ever in Lucerne, you'll get a fine home-brewed beer!
@highlander Hoi Highlander, aus Luzern? PM geht hier ja nicht, kannst Du mich mal unter 09.napes.cure@icloud.com kontaktieren? Grüsse, Michael
Thank you for your idea of using a shelly, I have plenty of them dotted around the house just not a em. But it did get me thinking, I use a self made "Home Assistant Glow" meter reporter (https://github.com/klaasnicolaas/home-assistant-glow), and you can also fetch power and energy parameters from that through REST, so I've forked your project and have it working on my own setup nicely at the moment, the latest code hasn't been committed yet as I'm still testing through a shell...I'll keep you posted on updates if you like, but just wanted to say thanks @fabian-lauer
top work. Thanks for the script.
Can anyone help here? instead of querying a shelly how can get the values directly from iobroker?
I'm not a developer, but it should be possible, or not?
https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter/issues/6
Hey,
great work but i am confused why my system shows under ac loads some strange values - looks like it doesnt like the negative value -
for example i have a load of 1700 on L1 - and -1700 comes in via L3 -
The Grid Value show correct but the AC Loads not and Overall Consume is also to high then.
I am having a Multiplus II - 3000 // 3 Solar Chargers / Canbus Battery / Shelly 3EM
please help :)
Hi, I have the same issue like hundlos . is there a way to fix this? I am using a Multiplus II 48/3000 Thx Josef
can you give more details - updated screenshot and how wiring is done for your setup.
In case that Shelly app is also showing the value on the wrong phase, maybe the wiring of shelly is not correct.
THANKS !!!!!!! i was stuck with a faulty EM24 and i cannot find a replacement anywhere ..
Luckily for me i already had a 3EM to monitor input/output ... you saved me a lot of headaches and money, THANKS AGAIN....
Hello @fabian-lauer ,
great job! The script is a real benefit for all shelly users. I'm using a shelly em to log and monitor my pv. The status output looks as attached. I tried to install your service via the script provided by you on a Multiplus II GX but i cannot see the device in the device list. Are there any additional steps to do? Thank you in advance for your help.
Hello @fabian-lauer ,
i tried to install your service via the script on my Multiplus II GX too, but unfortunately it doesn‘t work. Is there any difference to use it on a Cerbo GX or on the Multiplus-II GX ?
Best regards, Markus
Hi, I hope you don't mind I ask this here...
Does anybody know if Shelly EM/ 3EM can be powered from a different AC line (both Neutral an Live) than the Grid it is measuring? Although the device consumption is low, my goal is to put the Shelly device powered by an Offgrid installation (both consumption and reliability/ availability issues). The Shelly however, is supposed to measure Grid AC energy spenditure on another grid installation (close by). Can this be done?
FYI if using the "large" Venus image you can also use Node-Red to fetch directly from the Shelly either via their REST API or MQTT. This might be easier for some depending on what you plan to use those measurements for.
The Skript Work and Venus Know the State of Grid but my Multiplus Dont Work. They can send Power from AC Out to AC in. What i do Wrong. When He can send Power to Grid?
Victron Multiplus 24/1200
Batterie 4x Longlife 6v 225Ah
Shelly 3EM
Hello,
this skript is running very well for me. but one question: in the remote desktop it looks all rigth but in the portal dashboard i`am missing the total: what can id do?
How do I adapt this to work for Shelly EM?
Hallo Fabian,
Arbeiten Sie noch an dem Treiber?
habe ebenfalls ein Problem mit der Berechnung und Anzeige im VRM-Portal. Lt. Meinem Homeassistant hatte ich heute nur 1,2 Kw Netzbezug.
Die Batterie zeigt es mir gar nicht an.
Mein Problem ist, dass ich die Fehlerbeschreibung und damit den Fehler gerade nicht so richtig nachvollziehen kann - ggf. ist es auch schon zu spät für heute....
Hallo Fabian,
ich glaube du denkst bei der Berechnung zu komplex.
leider kann ich überhaupt nicht programmieren und kenne mich somit auch nicht aus. In Fehm konnte ich das Problem aber wie folgt lösen: dabei benütze ich das Reverse vom Shelly gar nicht, sondern berrechne es gleich selbst. Ich weiß nicht ob sich solche "Formeln" umsetzen lassen. Diese Berechnung wäre natürlich nur für das Portal, zur Anzeige von /Ac/Energy/Forward und /Ac/Energy/Reverse
Summe_Forward = L1+L2+L3
Forward = Summe_Forward < 0 = 0 --> ansonsten Summe_Forward
komplett_Forward = komplett_Forward + Forward
für Einspeisung fast gleich:
Summe_Reverse = L1+L2+L3
Reverse = Summe_Reverse < 0 dann Summe_Reverse --> ansonsten 0
komplett_Reverse = komplett_Reverse + Reverse * (-1) -- damit ein positiver Wert angezeigt wird
Evtl hilft dir das ja für die richtige Berechnung
würden Sie Ihr funktionierendes Skrip zu Verfügung stellen? die .py im developer funktioiert leider nicht. da ich von Python leider keine Ahnung habe, komme ich leider nicht weiter.
vielen Dank für dieses Script :-)
funktioniert super mit meinem Cerbo GX
@fabian-lauer ich habe mit großem Interesse diese Lösung gelesen, vielen Dank dafür.
Ist es möglich den Shelly3em im VenusOS installiert auf einem RaspberryPi anzeigen zu lassen?
Danke und Gruß René
Great work to integrate an EM3 into Venus. I have a similiar problem that @cwaxe has.
I'm using a shelly EM3 to log and monitor my house feed. I transferred the script data V2.0 via WIN SCP. Then I launched ./install.sh on my Multiplus II GX. The IP-adress of the EM3 is adjusted in config.ini without username and password. The EM3 page is accessible without trouble via home network and cloud.
But the EM3 doesn't appear in the list of devices and in energy meters.
Does anybody know if there are additional steps to do ?
Thank you in advance for your help, Markus.
Hi Markus,
did you update your GX device to the newest firmware?
I got it running but I'm not sure if I had to install python manually with the GX device running on an old firmware. In the newest Venus OS there is python included.
Right after executing install.sh the devices are not shown, you have do make a reboot.
Greets, Christian
Hi Christian,
thanks for your answer. Yes, my GX device is updated to the latest firmware v497. I think this Venus OS has python included.
After executing install.sh in WinSCP/Putty and the directory data/dbus-shelly-3em-smartmeter I was doing several reboots of the Multiplus II GX, but the device is not shown anyway.
I hope there are further ideas, to get the device working.
Best regards, Markus
I have my shelly as grid meter installed and showing in the dashboard.
I also have a second shelly to monior/measure my solar system. How can I integrate this one and tell the multiplus that it's for solar system, so it shows solar production? Do I just add 2 IP addresses in config.ini, and how do I set to to solar?
Therefore it gives the Shelly 1PM as PV inverter in VenusOS thread.
For a 3em you have to change something in the py file, like adress usw.
Hallo Fabian,
hab erfolgreich Dein Script auf meinem PI mit Venus OS 2.91 implementiert.
Die Werte des shelly 3em werden ohne Probleme angezeigt.
Vielen Dank an Dich und alle anderen hier für Eure Bemühungen!
VG
VoS
Hi,
i just downloaded this driver and also run the install script as described.
After the install.sh the symlink : lrwxrwxrwx 1 root root 40 Oct 10 23:27 dbus-shelly-3em-smartmeter -> /data/dbus-shelly-3em-smartmeter/service
is established.
When i do reboot the driver does not start and the shelly em3 is not recogniced. Therefore i did a check and the symlink is not pointing to the service directory anymore.
Do i miss something when it comes to the installing routine and the symlink is not permanently written to the file device?
PS: If i run the python script dbus-shelly-3em-smartmeter.py directly within the console everything works fine.
Thanks in advance!
The /service directory used to be a physical folder on the system, it is now a memory based file system. This means that on a reboot the contents are lost and repopulated based on the contents of /opt/victronenergy/service. So unless the file/link is put in this directory, following a reboot it will be lost.
Maybe @fabian-lauer should update the install script.
Hi - not sure what needs to be updated there - because I always thought it is sufficient to add a "line" to /data/rc.local and that is some kind of persistent and starts the script in the background, even after restart.
I only have an extension on my GX device that overrides the file, instead of adding stuff to it - that makes the install break and you have to fix manually
So if the file looks like this, it should work
I am using firmware 2.90
***FIXED ****
Hello Fabian et al,
I am following your setup and have 3EM and Multiplus running since yesterday. What I found strange - and not finding a solution: Although the 3EM is part of the system, the grid consumption is not displayed in the Venus GUI like you all have. Is there any config error in the MPII? Or setting in Venus GUI? I am a bit puzzled....
Here is the 3EM
Appreciate any hint that I can follow...
More Settings:
Cheers!
Morphy
FIXED on VENUS Settings:
Device List / Settings / System Setup / AC Input 1 -> Set to GRID
I only have this situation when I restart the MP2, after a few seconds its fine.
Honestly I don't know what is needed there in detail, maybe it its related to a ESS configuration setting.
Maybe someone else has an idea on this?!
Hi,
my current.log tends to fullfill the /data filesystem, is it possible to disable the current.log feed ?
@fgingat you can change the script-file dbus-shelly-3em-smartmeter.py and search for "logging.basicConfig" close to the end.
Here you find the level parameter - change from "logging.INFO" to "logging.CRITICAL"
See docs for more details: https://docs.python.org/3/library/logging.html#levels
Will add a parameter to config.ini in future - already on it, but want to add some more input to the script
Hi Fabian,
great so far,
i got one EM3 running an it ist present in Device-List beside on EM24
My CerfboGX got Firmware v2.90
and the choosen Language is "Deutsch"
I'd like to measure and display PV-Input
In "Geräteliste -> Grid meter -> Einrichtung " which ist my EM24 therf is a setup-point "Rolle"
but within Shelly 3EM i am missing this Point.
So the measures does not appear in the Status -Page
may you give me advice?
regards GrownGizmo
Unfortunately, this is not as convenient as with other counters.
change times in the file"dbus-shelly-3em-smartmeter.py"
from:
self._dbusservice.add_path('/Role', 'grid')
self._dbusservice.add_path('/Position', 0) # normaly only needed for pvinverter (0=AC input 1;1=AC output;2=AC input 2)
to:
self._dbusservice.add_path('/Role', 'pvinverter')
self._dbusservice.add_path('/Position', 1) # normaly only needed for pvinverter
Thanks for this advice.
Meanwhile I found an tried this two lines, but this seems not to be enough.
I changed this two lines.
I restartet the service
I uninstalled and reinstalled the service
I rebootd several times.
So i have to ask: Do i have to change the already used name or VRM-Instanz, or maybe the serial number?
Es reicht, wenn Sie die Änderung vornehmen und den Dienst (restart.sh) aus dem Ordner neu starten.
Hi All,
I have the need to install several Shelly 3EMs as AC Meters in my Venus OS. Is this possible with your driver, and can someone please give me a hint how to achieve that?
thx a lot!
Ja
the response from a Shelly EM:
{"power":2724.16,"reactive":-1050.38,"pf":-0.93,"voltage":221.42,"is_valid":true,"total":12716863.2,"total_returned":1742722.0}
Could you modify the scrypt to work with single-phase EM?
Great work! I now use it on three different ESS.
For more professionell use without wlan I plan to use the SHELLY PRO 3EM. I think it should also run. Are there experiences?
The newer Shellys (3em is gen1, pro 3em is gen2) do have a different API. The Rest-API which ist used by the module resulting in a JSON-Reponse (see https://shelly-api-docs.shelly.cloud/gen1/), does no longer exist on GEN2 devices like the Shelly Pro 3EM (see https://shelly-api-docs.shelly.cloud/gen2/ ). Therefore I doubt that this module can work with Shelly Pro 3EM. A way would be to use modbus/TCP instead of the Rest API.
Go ahead. I will be pleased to use your module.
Hi @Martin Haas,
I own a Shelly Pro 3EM and use a customized script based on version from @fabian-lauer.
It works fine since over 1 month.
Maybe @fabian-lauer can add a new version which support both devices.
I can provide the changed code if required and also test a new version here.
BR Mario
I create a repo at github for Shelly Pro 3EM:
https://github.com/funkmaster86/dbus-shelly-pro-3em-smartmeter
Hello, Does this script also work with the new SHELLY PRO 3EM in Venus OS? Greetings Mike
Hello all,
I have a Shelly 3EM running as a 3-phase PV Intverter meter and it works fine until there is a reboot of the system. Then the scripts are no more executed and the shelly is no longer visible to the victron system.
I'm using a RasPi 4 with Venus OS 3.xx and installed the latest version of the shelly script.
It seem also to be impossible to restart it. It tried the comman "bash restart.sh" but it isn't working, it only returns a line of this:
"kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]"
=> I'm a total noob at this stage and have no idea. ;-)
Only a new installation is working until the next reboot.
Does someone has the same problem?
dieses Problem habe ich nach einem Venus update auch. dann muss ich auch nochmal sh install.sh machen. Ohne update habe ich keine Probleme
Oh ja, mit "bash install.sh" startet der Service sofort neu. Danke schon mal dafür.
Dennoch komisch, dass es immer wieder nach einem reboot nicht mehr geht...
I made it. With the hint from bonzai I found out that I have to restart the service with "install.sh" instead of "restart.sh".
And now I checked again the whole thread here and found the problem within the rc.local file.
There was a wrong path for the shelly 3em. Don't know why, but it was "dbus-shelly-3em-pvinverter/install.sh" instead of "dbus-shelly-3em-smartmeter/install.sh".
Now it is starting up after a reboot without problems. Thanks again! :)
Du öffnest das rc.local file mit dem editor "nano".
Dazu tippst du: nano rc.local.
Ich weiß es jetzt nicht mehr auswendig, aber irgendwo stand der Pfad bei mir falsch drin.
Dann einfach korrigieren so wie es bei dir vom Dateipfad ist und dann sollte das passen.
Hast du auch das Problem, dass das skript nach einem Neustart nicht automatisch startet?
Hello, is there a possibility to use or modify this project for a shelly Pro 1PM?
hallo kann man das script deinstallieren und wenn ja wie ? danke lg markus
Is it possible to add option in the settings page to trigger the "restart.sh"?
Very rarely the 3EM data seems to be frozen. Currently I'm using the reboot option from the venus.os settings menu to get it unstuck.
Having an option inside of the Shelly device settings could prevent rebooting the system which takes a lot longer than using "restart.sh"
Regards Thomas
Is it possible to connect more than one Shelly 3EM to Venus OS? I struggle with it. One is working the second not.
I have 2 Shellies. One for the Grid and one for my inverter.
copy rename different directories and changed the ID...
wget https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter/archive/refs/heads/main.zip unzip main.zip "dbus-shelly-3em-smartmeter-main/*" -d /data cp -R /data/dbus-shelly-3em-smartmeter-main /data/dbus-shelly-3em-inverter01 mv /data/dbus-shelly-3em-smartmeter-main /data/dbus-shelly-3em-mainpower01 chmod a+x /data/dbus-shelly-3em-inverter01/install.sh chmod a+x /data/dbus-shelly-3em-mainpower01/install.sh #Rename the py script cd /data/dbus-shelly-3em-mainpower01 mv dbus-shelly-3em-smartmeter.py dbus-shelly-3em-mainpower01.py cd /data/dbus-shelly-3em-inverter01 mv dbus-shelly-3em-smartmeter.py dbus-shelly-3em-inverter01.py nano /data/dbus-shelly-3em-inverter01/config.ini nano /data/dbus-shelly-3em-mainpower01/config.ini /data/dbus-shelly-3em-inverter01/install.sh /data/dbus-shelly-3em-mainpower01/install.sh
Main Power Smartmeter:
[DEFAULT] AccessType = OnPremise SignOfLifeLog = 1 CustomName = Grid DeviceInstance = 40 # Role Could be pvinverter or grid Role = grid # Available Postions: 0 = AC, 1 = AC-Out 1, AC-Out 2 Position = 0 # Available values see https://docs.python.org/3/library/logging.html#levels LogLevel=ERROR [ONPREMISE] Host=10.20.20.49 Username= Password= # Allows to specify which input on the Shelly should correspond to L1 on the Venus/GX device L1Position = 1
Inverter Smartmeter:
[DEFAULT] AccessType = OnPremise SignOfLifeLog = 1 CustomName = SunGrow DeviceInstance = 41 # Role Could be pvinverter or grid Role = pvinverter # Available Postions: 0 = AC, 1 = AC-Out 1, AC-Out 2 Position = 0 # Available values see https://docs.python.org/3/library/logging.html#levels LogLevel=ERROR [ONPREMISE] Host=10.20.20.48 Username= Password= # Allows to specify which input on the Shelly should correspond to L1 on the Venus/GX device L1Position = 1
Thanks a lot
@Fabian: Great work!
Hi,
I had the same issue and I found out that some scripts are not working based on a relative path based on the folder where the scripts starts.
One of those cases is the service path under folder "../service", in the "run" script:
I had to substitute the original (default) service path to:
#!/bin/sh
exec 2>&1 python /data/dbus-shelly-3em-smartmeter-invert/dbus-shelly-3em-smartmeter.py
where the path for the 2nd instance is in my case "/data/dbus-shelly-3em-smartmeter-invert"
Also the script "restart.sh", has some issue (didn't had time to investigate) because it cannot kill the corresponding process, I assume some path issue as well. As I am using Venus 3.x I wonder if any change affected the effectiveness of the script ...
Anyway, you can check the service using ps command, identify your process and kill it manualy for test purposes.
Fabian @fabian-lauer did a remarkable work, some edges would need still a trim :-)
Hope I could help you.
bye
Copying the folder trees and assuming the install.sh would install two services contacting 2 Shelly 3 Pro EMs. This is suggested in a Youtube video from Halmand. However, it's not working for me. Only the first one shows up.
Does anyone know how to get this working?
Hello Fabian,
I am a Cerbo GX user from the United States in Pennsylvania. I appreciate the work that you did for integrating the 3EM with Venus OS. I am wondering if you have this working with the latest firmware (V3.22)? The installation of your script went fine, however, I never get a service that is running on the Cerbo. Please let me know your thoughts.
-doug
Please advise if an Emporia Vue solution is possible (once they make API public) similar to the Shelly 3EM. I have 2-phase Emporia Vue 2 that also has 8 (up to 16) breaker-level monitors and also has 8 smart outlets. Would be GREAT to incorporate this into Venus OS (Cerbo, CCGX or Raspi).
Hi all, and big thanks to Fabian for his effort to provide this great project for free (I would like to donate actually if you may want offer an option in your Github page).
Until now I just read and learned from the community. After struggling a whole day to get the 0 feed to grid working. It worked right after installing but after I learned, that the L1 at the 3EM has to be the one that is connected to the Multiphase, I slightly rewired it and after restarting the system it didn't work anymore. (forgot that ther is a setting to tweak this in congif.ini)
Tipp in case of energy meter values are not considered by Multiplus for inverting to 0 Grid feed in. I was having the problem that all of a sudden the grid meter values have not been considered by the multiplex to control the 0 feed in. The value were shown in the pages but with same value on grid as on load side. This even didn't change after reinstalling the whole raspi with VenusOS again. I then only found out, that at the Multiplus settings (-> Advanced) you have to hit "Redetect VE.Bus system" to make the Multiplus Inverter synchronize the grind consumption with the ShellyEM.
so that is looks like this.
maybe that saves some time for some of you.
@fabian-lauer I'm using your integration, thanks for this!
There is a possible problem with it. Under certain conditions, I think it can overload cerbo https://community.victronenergy.com/questions/304132/cerbo-gx-overload-and-as-result-loose-bms-connecti.html
Im still trying to investigate if it's so
I've got two 3EM running and some node-red script to regulate my infeed and have been discussing my stability issues at length in https://community.victronenergy.com/questions/276890/cerbo-gx-random-reboots.html
My solution was increasing the watchdog threshold. This got rid of the reboots, and uptime stands at 65 days now.
