Monitoring outside temperature with EmonHP without EmonTx

Ivailo_Stefanov · 2023-01-22T08:55:46.012Z

Hi. I have EmonHP level 3 heatpump monitoring pack installed on my heatpump. When I ordered it EmonTx was out of stock. I live in Bulgaria and ordering EmonTx is a little bit expensive for me because of postal and customs cost. Is there any way to use emonhp and monitor ouside temperature?

borpin · 2023-01-22T10:03:20.454Z

Hi, welcome,

You can push an external temperature value into emoncms from almost any source. Do you have Node-RED or HomeAssistant installed? It makes it easier if you do. What sort of skill level do you have?

Ivailo_Stefanov · 2023-01-22T10:16:12.048Z

My skill level is very basic. I don’t have home assistant or Node-RED installed…I was thinking about using a modbus temperature and humidity sensor and reading it with available emonhp interfacer?

borpin · 2023-01-22T14:09:57.794Z

I don’t know of anything that does not need some intermediate step to format the data correctly for emoncms to take as a Input/Feed.

@TrystanLea - I doubt this will be the only user with this need. Could a simple systemd service be developed to access the free OpenWeather API and push the data to a Feed I wonder?

Bit like how the Agile pricing data is pulled into that App (although I think that happens on demand rather than create a Feed).

Timbones · 2023-01-22T16:02:02.361Z

Glyn wrote a simple python script to get the outside temperature from OpenWeather API.
I do the same for my system, and find it to be close enough to my own local readings.

Ivailo_Stefanov · 2023-01-22T18:15:55.668Z

Sorry for my stupid question, but how to run this script periodically with emoncms?

TrystanLea · 2023-01-22T18:54:08.441Z

Hello @Ivailo_Stefanov are you logging the data to emoncms.org? We should be able to set this up for you if that’s the case.

Ivailo_Stefanov · 2023-01-23T06:11:15.023Z

Yes, I am, but can you give me some directions to give it a try and if i can’t do it will ask you for help?

borpin · 2023-01-23T07:52:44.569Z

Timbones:

Glyn wrote a simple python script to get the outside temperature from OpenWeather API.

@Timbones - I see you said you’d made some mods. Could you submit it to the GitHub - emoncms/usefulscripts: Some useful scripts for administering Emoncms accounts Repo?

Suggest a new folder.

If you trigger from a systemd service, that would be useful to include

glyn.hudson · 2023-01-23T10:23:32.940Z

We currently use metoffice as our weather data source using

GitHub

GitHub - glynhudson/metoffice-emoncms: Post location temperature data from...

Post location temperature data from Metoffice Datapoint to Emoncms - GitHub - glynhudson/metoffice-emoncms: Post location temperature data from Metoffice Datapoint to Emoncms

We can set this up for you, it’s included in the emonhp bundle. Please could you message me your location and emoncms.org username?

borpin · 2023-01-23T11:51:52.138Z

Perhaps add to the docs that an external temp can be done on emoncms.org, the emonHP needs a section in the docs of its own.

I’m not clear what the emonHP actually consists of and especially if there is any Hardware connected to the Pi (internally).

glyn.hudson · 2023-01-23T12:56:28.956Z

There is a field on the emonHP order page to enter the installation postcode, we use this to generate weather data:

Screenshot from 2023-01-23 12-55-02

Shop | OpenEnergyMonitor

Level 3 Heat Pump Monitoring Bundle (emonHP)

Open-source hardware tools for energy monitoring and visualisation

Price: GBP 639.18

I think the issue in this instance is the OP is outside of the UK, so we will need to use lat, long instead of UK postcode to provide the data.

borpin · 2023-01-23T13:10:04.687Z

glyn.hudson:

There is a field on the emonHP order page to enter the installation postcode, we use this to generate weather data:

That’s great

Ivailo_Stefanov · 2023-01-23T14:24:04.045Z

https://maps.app.goo.gl/fZjFfybc3sDburq47
My username is Ivailostefanov

borpin · 2023-12-15T09:03:29.804Z

3 posts were split to a new topic: Sending sensor value from HomeAssistant to emoncms

LeiChat · 2023-12-15T09:04:05.469Z

Thank you. I have not tried Node-RED yet but do have a couple of integrations using MQTT.

ajdunlop · 2023-12-20T12:46:51.177Z

glyn.hudson:

We currently use metoffice as our weather data source using

GitHub - glynhudson/metoffice-emoncms: Post location temperature data from Metoffice Datapoint to Emoncms

Has something happened to the MetOffice feed? Normally it is very reliable (set up by you on my emonHP) but today I have this:

image1100×562 23.4 KB

glyn.hudson · 2023-12-20T15:37:56.787Z

Metoffice API has had some issues in the past couple of days, these should now be resolved

ajdunlop · 2023-12-20T17:32:11.206Z

Is there anything I can do to give it a kick or should it start coming through again soon?

glyn.hudson · 2023-12-23T22:28:49.601Z

API is back up and running, sorry for the outage.