So, Looking at the openemon shop, I can’t find the emonpi3 or tx6 products… do they exist?
My understanding is both are imminent, I don’t think a date has been fixed yet.
Hi @spyro - they do exist, but not quite ready for general sales. Going out to some testers right now 
If you want to have look, the hardware is here and the firmware is here. There are also some supply issues for the emonVs that are being resolved as well. Let me know if you have any queries/comments.
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What is pricing looking like, and what do you get in the box?
Does the pi3 come in a nice box with sensors like the Pi2? Do you get the Pi included in the box?
I’d probably want the 12 sensor version? I want to monitor all my circuits, and I already have 6+ incoming mains before we upgrade the CU…
Hi @spyro - it will be available from the OEM shop, I don’t know about prices yet. It comes in the same case as the Pi2. If you want the full 12 CT inputs, you can either use a Pi Zero (2) or we’re developing a little ESPHome board. I believe you can specify in the shop whether it includes a Pi or not.
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Ok, I’ve taken a slightly closer look; AFAICT the emon32 is the emonPi3 ? The nomenclature is a bit confusing. The page says emon32, the pic of the board says emonPi3.
Looking at the pic of the board, I take it it’s a Pi hat type thing, and it looks like it’s padded for a 433MHz module so it can also be used as a emonTx product if the board is stuffed appropriately?
I’m not sure how it’s supposed to get another 6 inputs by the use of a Pi Zero? surely that’s a limit of the emonPi3 board having 6 connectors on it? where do the other 6 inputs go?
Re: the ESPHome board - is this intended to remove the need for the 433MHz radio? Presumably the openemon web bits still need to be run somewhere else?
The purpose the the ESP32 board and the ESPHome Component is three fold.
- It negates the need for a dedicated Pi (to receive the data via RFM or be onboard) as the ESP board can be configured to send the data directly, by Wi-Fi to any emoncms instance hosted anywhere by MQTT or HTTP.
- Using the ESPHome framework eliminates the need to update the dedicated emonESP firmware.
- A system with the ESP Board and ESPHome Component will integrate directly with Home Assistant meaning there is no need for emoncms to be available to record the data.
If there was a demand, the RFM chip could be removed, but currently it is better to build all the boards with it fitted.
The PiZero simply runs the interface (emonhub as a minimum and emoncms) - it receives the data via the UART (I believe). There will be an expander board to add 6 extra CT inputs. The data from the extra CTs is loaded onto the data sent via the serial port and or the RFM.
[edit]
To note that with the PiZero it would still be possible to send data to Home Assistant, but either by MQTT or emoncms.
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So, a little history. I started the emon32 project independently as I wanted to move away from Arduino and 8bit microcontrollers onto modern 32 bit microcontrollers (hence the name). This is now a “proper” OEM project, and the repo just moved over to the OEM github. Probably makes sense to rename it now it’s close to general availability.
Just to add to what Brian said, with the 6CT expander board connected, there isn’t space for a full size Raspberry Pi, so you either have to use a Zero (2) or the little ESP WiFi board.
It’s not in the official HAT form factor and it can also run standalone, but yes, the Raspberry Pi connects through the 40 pin header from underneath.
Hope that helps
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Thanks - that’s made things quite a bit clearer.
I think my preferred option would be the emon32 and ESP with the expander. I have a machine that’s always on and more than capable of running the web / database stuff.
Is Home Assistant likely to end up simply replacing emoncms? should I think about side-stepping emoncms altogether?
I don’t mind buying a preproduction version (within reason) and I am handy enough with SMD and microcontroller stuff, so I’d be interested in testing if it’s available.
If not, whats the ETA (roughly) for it being in the shop?
It really depends on what you want to do with the data, they are two completely different tools. If just monitoring your energy consumption and seeing what uses what, HA is probably better visually. If more in-depth analysis for an HP say, then emoncms is the tool for that.
There is an addon that allows you to run emoncms within an HA setup.
Hi @spyro - all been assembled already, and, having made the prototypes by hand, I can assure you they’re not a fun DIY build 
The testers are doing a great job, so functionally I hope we’ll be good to go soon and then OEM will get it packed up for sale. I think, realistically, with Xmas coming up, early in 2026.
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Is pricing going to be similar to the emonpi2? what should I be expecting?
Should be similar, replaced some old expensive parts.