I would like to monitor my energy consumption to see how this one is during about one year to decide if it would be interesting to add solar PV array as an auto consomption for my house.
I’ve placed a file with a setup I would like to implement:
Here are my questions:
- To measure the total energy consumption seems to be clear to me with a 3 phases system using 3x emoTx. However as there is other inputs available in the 3 x emoTx, would it be possible to use the other inputs to measure other dedicated energy consumption like:
- 3 phases going to my garage for mainly heat pump + other stuff
- 3 phases coming from solar PV array (which I would like to add in the futur).
(see the file link for clearer explanation)
I’m using OpenRemote to monitor all my house (server is on a raspberry 3) and I’m using already emonCms with success to get back on graph temperature, humidity and light. I suppose I don’t need to buy another emonPi or emonBase; just use the one I have, right? (if yes I need to take the 3 emonTX with the wifi module the V3, right ?)
=> If it’s possible, how do I configure the emonTx to send data to my raspberry 3 ? Do I need to reprogram it ?
I would like also to use a emonGLCD but I’m not sure how to configure it. Where could I found some data to install this one ? (I didn’t find for the moment)
Would it be possible to use it with my configuration ?
Last question for the moment. It’s about the current transformer. You have chosen a 100A version; this will be far away from the current I would get for each phases I have. Would it be possible to change it with other one like
If yes, what would be the impact for the emonTx ? (soft modification or also hard?)
Thanks for your feedback.
Many thanks Rober for your quick feedback.
I’m not sure to get it.
When I read your answer I have the feeling this is what I wanted to do and what I draw in my schematic shown. So I don’t know on my picture where is the mistake if there is one because what you explain is what I wanted to do.
Clear except the 5V USB power needed.
If I add wifi module to emonTx, I need to supply with a 5V USB ? So I will not be able to use the AC/AC power supply and don’t measure properly the voltage of each phases?
If I choose to add the RFM69PI to my raspberry PI, then I don’t need to supply emonTx with 5VUSB right ?(only AC/AC)
Here is the list of product I would like to order:
3 x emonTx V3
(I will buy 2 with Node ID8 and one with Node ID7; I will have to update the NodeID of one)
Node ID : 8 (default)
Enclosure: Fully Assembled
AC Power Adapter: Euro Plug
9 x CT
1 x RFM69Pi 433Mhz
1 x Programmer - USB to serial UART
1 x Mini-USB cable
Is that correct, to be able for my setup ?
Yes, when I enlarge your drawing, I see you are right. My apologies.
No, you can have the a.c. adapter to measure voltage and the USB supply for power.
But if you have the RFM69Pi, you do not need a WiFi module attached to your emonTx. The emonTx has a radio transmitter (that is the “Tx” part) for 433 MHz, so it will send the data to the emonBase ( = your Pi + RFM69Pi).
Therefore “If I choose to add the RFM69PI to my raspberry PI, then I don’t need to supply emonTx with 5VUSB right ?(only AC/AC)” you are correct, because the a.c. adapter can supply just enough power for the emonTx without the ESP8266, but it cannot supply enough power for the emonTx with the ESP8266.
It’s clear then.
Just another question. I will order soon but before, could you confirm if when we buy this:
emonTx V3 - Electricity Monitoring Transmitter
is the antenna included ? It’s not clear enough for me.
Clearly stated here: https://shop.openenergymonitor.com/emontx-v3/