I have already home assistant server, currently in Raspberry Pi 3B PLUS.
I want to measure current consumption (summary / daily / current) in my home:
- ALL, it can be in highest load about 60A / 230V total because of multiple air conditioner / freezers / ovens / and more.
And parts of this:
- Servers, PCs, smart home energy consumption with UPS
- Lights and Sockets
- Air conditioner
- boilers (hot water)
I know, maybe it’s not important but it is my plan to watch this values.
All of devices have in same place the power input, so I will install all of consumption measurement to same place, so no need WIFI or other wireless connection.
What is your recommended solution to measure with at least 6 CT this values?
I also found some topics:
BUT sadly I have no perfect skills about soldering, but I can if no other way. I don’t think I’m a first who searching solution to measure 6-8 node with wired connection.
I collecting my possible plans, what is all not perfect:
2 pcs emonTx V3 + 1x high single-phase CT + 3x single phase CT = 2 * (1+3) = 8 measure, its OK.
And I connect this 2x emonTx V3 with WIFI to my Raspberry Pi 3B PLUS and reading data with Home Assistant, it can works? BUT I don’t want use WIFI or wireless connection.
QUESTION 1: Any (easy) or already done solution to connect this 2x emonTx with ethernet (RJ45) to my Raspberry Pi?
QUESTION 2: This way can communicate with Home Assistant? Or you recommend to run on my Raspberry Pi EMONCMS and Home Assistant will communicate / read from EMONCMS?
I found here more details:
“EmonTX - Serial - Pi - EmonHub - HTTP API or MQTT - Emoncms Server (not necessarily on local Pi).”
So possible to connect with Serial, wired connection to my Raspberry Pi and that’s all?
3 pcs emonPi? For measure 6 node? Or 4x emonPi for meausre 8? It’s expensive, and nice scalable architecture.
QUESTION 3: It will works, and can I read all of 6 or 8 CT sensor’s data using Ethernet?
QUESTION 4: Any way to use only 1 emonPi and connecting 1x or 2x emonTx to this for process 2+4 or 2+4+4 energy measure? Only possible connect in wireless? Or possible to connect with etheret (RJ45)?
2 pcs emonTx V3 + ethernet shield = my Raspberry Pi with installed EmonCMS + Home Assistant process data and all done, because only wired, ethernet connection?
QUESTION 5: Possible to use emonTx with any Ethernet shield?
More simple solution?
QUESTION 6: Any already done solution to do this, with less developing, less DIY? What only use Ethernet and do the same measurements with 6 or 8 CT node?
UPDATE: After very nice comments I changed topic from “Cheapest Ethernet Sensor node with at least 6 (CT) energy consumption sensor + Home Assistant” to current one. Seems like wired connection is surprisingly more expensive, but it’s ok. 6-8 sensor will be nice. After I found the solution with strong help I will try to share my plan, hardware and software solution. I try to solder and develop less and using more complete modules, solutions if possible… in our DIY World…
Thank you guys.