Zigbee radiator TRV

[mark.cockcroft]

Was anything showing in the logs?

[mark.cockcroft]

Anyone tried this driver

[RELEASE] eCozy ZigBee Thermostat / TRV

I ported my ST DTH for the eCozy Thermostat to Hubitat. Just required changing one word for it to work. https://github.com/ckpt-martin/Hubitat/blob/master/eCozy/eCozy-ZigBee-Thermostat-Driver.groovy

[djh_wolf]

UK TRV's

@simon @60milesmile Have you considered sacking off the trvs entirely? I did, and it's seriously the best move I made. This works awesome. See thread and my replies here (it's a short thread)...

Reliably setting various trv set points

Not quite answering your question, but I'm porting my crap from ST to here. My trvs are currently unsupported in hubitat and to be honest, have always been a bit flakey. Decided to try an alternative approach. Here's a text I just sent an hour ago to my plumber mate... ======== Bet this hasn't exactly been keeping you awake at night, but I knew there was a simple solution. Specifically designed for cutting off liquid flow at a manifold etc. Screws directly onto an m30 thread (I. E. Onto an e…

I gave up on the smart trvs after about a years worth of spotty performance. Swapped to thermal actuators after my jump to hubitat.

I would never, ever, ever recommend anything but. They work flawlessly, and they're CHEAP. Every part of this system now is easily and transparently replaceable with off the shelf components.

Never looked back.

[mark.cockcroft]

Can you do a full write up, diagram, I couldn't understand how you were controlling the valve hardware and software

[djh_wolf]

Haven't really got the time for a full writeup but all the info is there.

Basically, requirements:

1. 240v thermal actuator (live/neutral).
2. Add a plug, plug it into a smart socket. When socket is on,valve opens.
3. Smart boiler switch of some sort.
4. Temperature sensor of some sort.
5. Webcore piston to check current room temp against your desired room temp, activating the socket when current is lower than desired. Switching off again when temp is reached/higher. I have one of these per room, running every x minutes.
6. Webcore piston to activate the boiler whenever ANY sockets are flicked on. And to switch the boiler off again if ALL of the sockets are off.

That's the top and bottom of it.

Full disclosure, I use a different (better, imo) approach. Instead of smart sockets, I run nodemcu's with 3v relays to control the actuators. This allows me to attach temp/humidity sensors to these in each room, and a few other cool bits (manual boost buttons, indicator LED's etc).

I have some cool virtual switches and a bit of webcore to allow me to 'boost' a room for 30 mins, obviously disabling the heating if a 'max' temp is reached after a few mins. Also allows me to disable/enable schedules for each room. Heating can be tweaked to only stick to schedule if the home alarm is set to 'home' etc. It's all rather slick imo. It all links together beautifully.

The main UI is controlled via sharptools (that's the screenshot).

I put a LOT of thought into this. And for me, it works utterly to perfection. I would prefer I could adjust the schedules easier via a UI instead of editing webcore, but once set up it doens't need changing anyway.

[mark.cockcroft]

That is what I'm struggling with how to open part way, close part way
To be honest I'd try write a app for it

[djh_wolf]

I don't open part way. Someone else commented on this too, but I can't see the issue in practice. mine are just open or closed.

[stefanoschiavi00]

@mark.cockcroft check this out

Hubitat in Europe (Germany) with Eurotronics Radiator Thermostats

Hello all, I did successfully setup an Eurotronic Spirit Zigbee eTRV on hubitat using the zen driver. My only concern / confusion is that it opens/closes the valve partially based on the temp differential between the temperature of the internal sensor and the setpoint this is not very smart and not very useful. I am keen to know what others have been doing with this

I got one of these zigbee eTRVs to work but I think it's not great: because essentially you have to always ensure that the setpoint is above the internal temperature sensor of the TRV until you reach your desired temperature.
you can achieve partial open and close but by using the zen thermostat driver it's a dance/fight with the internal sensor.
When the radiator starts warming up the internal sensor will register a higher temperature much sooner than the room sensor, that's the issue.
We need better drivers

[mark.cockcroft]

Thanks for that I'll have a look when mine arrives

[mark.cockcroft]

Well mine arrived but can't get it working with the zen driver or generic zigbee thermostat

[akitamostodos]

Same for me,can't do anything

[mark.cockcroft]

I've decoded the setpoint reports

[mark.cockcroft]

found this in python, Domoticz-Zigate/tuya.py at 4276f21030850b7f48893864fbe0c9ecfabb2ca8 · pipiche38/Domoticz-Zigate · GitHub

[mark.cockcroft]

i now have a driver which reads setpoints, temperature and mode.
battery to do.
They i will need some help on writing the send zigbee commands

[djashones]

I've got a actuator coming on monday to try out. Had enough of Hive TRV's and aeotec gones bonkers every so often But I need this for the bathroom at least.

[danirtoma]

Did someone archive a solution already?

[mark.cockcroft]

just migrating to c7 so not had a look yet

[Bagpuss]

This solution looks excellent! Came across it while trying to find Zigbee TRVs (for UK).

I like the idea of basic actuators controlling the radiators.

I’ve got two questions, please.

What throw is required from the actuator? I’ve seen some that have 3mm. Is that a correct amount? (Just regular Drayton TRVs on the rads at present)

Secondly, is any type of PID control easy to implement? Rather than just simple on/off at a given temperature? (I’m no expert at this, so I’d need a fairly user-friendly solution!)

Thank you

[djh_wolf]

@Bagpuss

Are you asking me (ref regular trvs) or one of the other guys (ref zigbee and custom)?

If it's me, I use webcore. I'm a bit useless with it, but I patched it together. Works ace. I'd prefer an app, it'd be cleaner. But I can't code.

I'd bet someone here could convert my mess into something more easily 'portable' though. Give me a shout if you want any help. Mine's been rock solid for more than a year.

2 pistons per zone.
One for the boiler switch.

A few variables and virtual switches.