Same as mine, a rebadged Steca TR0603. I have thought of paralleling the sensor input leads with a WiFi device that reads those "Dallas" style sensors. Though that might reduce the signal into the Steca. I might have to build a unity gain OpAmp to take a reading for the WiFi device and then pass the reboosted signal into the Steca. Another future project.
Its this one: https://www.manualslib.com/manual/803439/Kingspan-Temperature-Differential-Controller.html
i don’t think it has an SD card on the side. Any ideas how to get temperature out of this one (or directly from got water cylinders) and into home assistant? Any clues would help.
Is it the big SC400 which has the SD Card in the side ? If so, that's the rebadged Steca TR0604 and has an RS232 which I have connected to a Raspberry Pi and sends the data via MQTT to my main Node-Red
Hello there! I too have an sc400 and would love to be able to push this info into Home Assistant.
Have you had any luck in doing this yourself? Many thanks!
I do have one shoved under the insulation at the top (the ds18b20 ones) and using it to control pump on the stove too.
I did hope to pull run time from it to calculate kwh too.
No stranger to pulling electronics apart.
If all else fails, you could look into tapping the voltage levels of the PT1000s at the terminals using an ESP32's ADC or similar & report values over WiFi.
You would just have to calibrate the readings once against the water temp in the tank or if you could check how the resistor divider is laid out on the existing PCB you could be more confident of the values.....
However, you would want to be sure of what you were doing. I suspect the warranty is long gone.😁
No time today for a full disassembly, I'll have a check another time,
Anything on the back of the board?
Good job I took the cover off..
No vbus terminal.
Also no voltage on it either, solar tubes have been in since.. 07/08ish
Turtles all the way down, the actual label is pro solar ps c104 😂
Looks like a rebadged DeltaSol CS/2. Sonnenkraft were clearly very imaginative in their new name. 😂
Thanks for the that,
Looks like mine is a sonnenkraft SKSC2. If I stick a multimeter on it, I should be able to see if it's TTL or not.
I do have rs485 boards but by they sounds of it I don't think I can use that directly
VBus is similar to RS485 in that is is differential, but it uses different voltage levels so you need some circuitry to convert to appropriate levels. I'd recommending having a look at the Resol controller first. It seems some of the controllers output TTL level and use a different board to convert to VBus levels. My controller is newer (older?) and only outputs VBus levels, so I used this to convert. There are other circuit examples here and here. Once you have the hardware sorted, you are ar muin na muice.
As for the parsing side of it, because I used the rpi0 board, I used pyvbus to parse and serve the results as JSON over HTTP (this predated my use of HA). If I was starting again I'd push over MQTT but the REST sensor in HA integrates with this just as well.
Is the vbus hard to setup? Mine has vbus too. Once I figured out it was a rebadge.
Resol DeltaSol BS/3. I have the VBus output connected to a Raspberry Pi Zero.
What solar thermal controller to you have @Jonathan? I have a Kingspan SC400 that also shows me top cylinder temp, bottom cylinder temp and roof collector temp. Would love to get that info into home assistant
I'm not using the Eddi relay board, but pulling similar information from my Solar Thermal controller. I have a daily hot water boost to heat the water to a set temperature in HA (she increases the temp slider on the days she's washing her hair).
My use case would be to know if the water is hot enough the next morning to have a shower or do I need to boost via the Eddi or Gas. At the moment its a bit more manual by running the hot tap to check.
It's interesting having the information but haven't found much other use for it yet.
Thanks for the reply. Do you find it was a good addition to the setup? Board and probe are relatively cheap so thinking it could be useful for automation.
I have, it's easy enough to do. Just a little fiddly trying to seat the ribbon cable for the board. A tweezers would be a help.
Sorry for bumping an old thread just wondering have many fitted the relay board and thermostat sensor to their Eddi?
Recently replaced the old small cylinder to a new Joule Cyclone and would like to get accurate temperature information.
way forward wrote: » What is the sensor at top of tank ?
db wrote: » Do you not have a sensor at the top of the tank to give you the temperature?
Duine_Eigin wrote: » You could get the optional relay board for the eddi which will give you the temp in the tank. You need a PT1000 temperature probe too, I got mine on amazon. The temp is shown on the screen of the eddi and also in the app (if you have the myenergi hub installed). It's a simple install; just a matter of opening the eddi, fitting the relay board and plugging in the connector. It will also give you additional relay outputs for the eddi to control devices other than the immersion.https://myenergi.com/product/eddi-relay-sensor-board/
Gumbo wrote: » I’ve been chasing this myself as I have an eddi. Sometimes during winter, not a lot gets diverted but enough to heat for a shower. I’ve resorted to manual method of putting my hand on the top pipe that leaves the cylinder. That pipe is directly touching the water in the cylinder, so if that’s hot, inside is scalding. If that’s warm, inside is hot etc Think of it like a spoon in a cup of boiling water. Think of how the spoon heats up.
