OpenEnergyMonitor Community

Simple energy monitor - Beginners guide

Hi everyone,

My colleague (Tausiq) and I have been working on a gateway for beginners onto OEM. We have now created a final draft for a simple energy monitor. It covers:

  1. Identifying required OEM Hardware
  2. Connecting to network and setting up data logging platform (EmonCMS)
  3. Installing Hardware
  4. Creating energy monitoring apps using EmonCMS

It is based on the readily available information on the OEM guide. However, some sections have been reworded and some additional information has been included to make the process more user-friendly specially for those with no previous background. You can find the draft here:

Simple Energy monitor - OEM Guide.pdf (3.5 MB)

We would greatly appreciate your feedback and contributions :smiley:

Ps. The video mentioned and highlighted in yellow on the guide will be made public soon. Things that we would like to add on the next revision are:

  • Information on the cost comparison app (how to set it up and what it is useful for)
  • Information on the octopus agile app (though that might be covered in its own individual guide instead)

Tausiq and Rocio

Thank you Rocio,
I will read in detail and let you know.
My first bits of feedback are:

  1. As a complete novice I get confused about which steps should be completed using which machine - the Raspberry Pi or another, like now I’m using a laptop. I thought it would be good to plug a screen, mouse & keyboard into the RPi, somebody said that isn’t necessary, but when I did I could actually operate the RPi. So, things like the Etcher, do I use that form the laptop & push to the RPi or on the RPi and pull? At the beginning I need really basic instructions about what to plus into what!
  2. I am taking advantage of having to replace the distribution board in its entirety (the old one caught fire), so I have the luxury of DIN-rail mounted whole-current meters, which I will connect via fancy RS485 cable & a USB adapter to the RPi. This may not be a common set up, but I think it will make an elegant solution, and would be good to somehow share the opportunity.
    Thank you for sharing the guide!

Not trying to hijack Rocio’s thread. Just want to answer Dan’s question…

Etcher doesn’t push or pull data. It writes the data directly to media physically connected to
the computer it’s running on. e.g. a card in a built-in SD slot or USB-SD card reader.

Here’s what you do:

Remove the µSD card from the RPi and insert it into your laptop or a USB card reader
if no SD card slot is available. I put a link to an example of a reader in your thread.

Write the image file to the card with the app of your choice. e.g. Etcher, RasPi Imager, WinImage, etc.

Put the card back in the RPi.

Boot your RPi and continue from there.

Hope that answers your question and clears the confusion. :grin:

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Thank you Daniel,

We shall consider that for the Heat Pump guide and the next revision of the simple energy monitor.

We have just uploaded the complementary Youtube video mentioned in the guide that shows you how to access the EmonPi via SSH. Hope it helps!

All the best,

Tausiq and Rocio

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