Post Shelly data to emoncms

Emoncms Emoncms.org
1

Hello, for now my only monitoring of heat pump is Shelly EM with two channels, one for DHW, second for UFH.
I would like to have those nice charts on emoncms.org.
With simple Python script running on RaspberryPI I can get shelly data parsed in lines like this:
2023-11-27 08:43:00 10W UFH
2023-11-27 08:44:00 10W UFH
2023-11-27 08:50:00 500W DHW

What is the correct format and interval to post it to emoncms.org?

My beginners guess is to call url like this every minute:
https://emoncms.org/input/post?apikey=xxxx&node=power_dhw&time=1581112821&csv=10

Not sure if its OK, maybe it can be done in batch with longer interval.
If anyone has Python example for this, please let me know.

2

Hi Lukas
I am by no means an expert in Python or emoncms, but this worked for me when I started doing something very similar yesterday. I am posting data I get from my air source heat pump API every 60s to emoncms and graphing it nicely. I am not sending a lot of data so you might need something different.

url = 'https://emoncms.org/input/post?node='+ emoncms_node_name + '&fulljson=' + json.dumps(json_data) + '&apikey=' + emoncms_write_api_key 

response = requests.get(url)

where:
emoncms_node_name = a name of your choice (e.g Shelly EM)
json_data = a json object containing your data
emoncms_write_api_key = the API write key from your emoncms account

you might need to do some imports (e.g import requests and import json)

I then followed the guides in emoncms to create the feeds from the inputs and then onto the graphing

3

sorry it seems the formatter thought it was a link, I have put the url source code as an image in this post

image
image877×74 11.2 KB

4

The answer to

is this: When posting code or output, please put 3 ‘backticks’ (normally found at the top left of the keyboard) on a line of their own before the code, and 3 more backticks also on a line of their own after the code:

```
code
```

If it is something like php you can add a language identifier after the first 3 backticks: ```php or even ```text if you don’t want any language markup applied.

I’ve edited your post for you.
If you want to go and play in the Sandpit - feel free. Yes - I mean that, there’s a category “Sandpit”
(the last on the list) where nobody takes any notice, so you can experiment with formatting etc as much as you like.

5

I am trying input bulk now.
I can upload data successfuly into emoncms.org, i see it in the feeds and on graph as well, when i call this:

https://emoncms.org/input/bulk.json?apikey=xxx&data=[[1700739360,1,0,10]]&time=0

[time_stamp, node_id, power_dhw, power_room]

However when i do the same call with multiple records, lets say data from this morning, smthng like this:

https://emoncms.org/input/bulk.json?apikey=xxxx&data=[[1700725860,1,2220,0],[1700725920,1,2236,0],[1700725980,1,2254,0],[1700726040,1,2268,0],[1700726100,1,2278,0],[1700726160,1,2286,0],[1700726220,1,2299,0],[1700726280,1,2314,0],[1700726340,1,2287,0],[1700726400,1,2260,0],[1700726460,1,2227,0],[1700726520,1,2194,0],[1700726580,1,2199,0],[1700726640,1,2198,0],[1700726700,1,2164,0],[1700726760,1,2173,0],[1700726820,1,2180,0],[1700726880,1,2149,0],[1700726940,1,2160,0],[1700727000,1,859,0],[1700727060,1,29,0],[1700727060,1,0,12],[1700740260,1,0,10]]&time=0

I get positive reply from server ‘‘ok’’ but the data is not there.
I dont know why it works with one record but not with mulitple. What could be the reason?
Should i use variable or fixed time series feed? Tried both with no improvement.

6

Have you tried manually sending some of the examples from Input API Help?

If those work, it is likely there’s an error in your data.