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Nuaire Drimaster Eco-Heat-HC & RFlink?
Posted: Wednesday 30 May 2018 13:41
by gwaelod
Anyone been able to get a Nuaire Drimaster passive ventilation unit linked to an RFlink?
I have a 433mhz link RFlink, but cant see any signals from the Drimaster remote switches to the unit, so I presume it works on 868mhz?
There's virtually no information about radio signals on manufacturers website
Re: Nuaire Drimaster Eco-Heat-HC & RFlink?
Posted: Monday 29 October 2018 14:42
by DanM
Replying after a long time.. but did you ever make progress with this? Its definately 868 - I spoke to the company about it. I was thinking of buying one of the switches and just soldering to it to send the signals..
Re: Nuaire Drimaster Eco-Heat-HC & RFlink?
Posted: Friday 30 November 2018 21:59
by gwaelod
No - not fiddled with it very much apart from pulling open the switch and noting that it looks virtually identical to the Orcon sensor in this thread
viewtopic.php?f=49&t=13713
Browsing some dutch forums the electronics superficially resemble some other dutch ventilation systems (Itho)
Re: Nuaire Drimaster Eco-Heat-HC & RFlink?
Posted: Saturday 01 December 2018 13:57
by gwaelod
When you say soldering to it send signals..do you mean soldering something like an ESP8266 to it and using the outputs to drive the switches?
Re: Nuaire Drimaster Eco-Heat-HC & RFlink?
Posted: Tuesday 05 November 2019 18:26
by zxdavb
This RF (868 Mhz) system uses the Residential Network Protocol. This includes the Nuaire 4-way switch, and other kit.
Raw packet from humidity sensor:
Code: Select all
045 I --- 32:168090 --:------ 32:168090 12A0 006 003C07A8049C
Decoded packet:
Code: Select all
|| 045 | I | | 32:168090 | | >broadcast | sensor_humidity | 006 | 003D07B304B9 ||
Decoded payload (003C07A8049C):
Code: Select all
{'domain': '00', 'relative_humidity': 0.61, 'temperature': 19.71, 'dewpoint': 12.09}
You could calculate a higher-precision relative humidity from the other two values using any one of the known formula.
The python code to take the raw payload and create the JSON is:
Code: Select all
{
"domain": payload[:2],
"relative_humidity": int(payload[2:4], 16) / 100,
"temperature": int(payload[4:8], 16) / 100,
"dewpoint": int(payload[8:12], 16) / 100,
}
Re: Nuaire Drimaster Eco-Heat-HC & RFlink?
Posted: Tuesday 05 November 2019 19:10
by zxdavb
If anyone has information on the residential network protocol, please PM me!