using mixed 1-wire and z-wave devices - should be just fine?

[Iain Malcolm]

I'm thinking of using 1-wire temperature sensors, as they are a fraction of the price of z-wave temperature sensors.

The house already has a lot of telephone type cables originally for security (most of which are not used) which I could use for this.

So I'll want to run a mix of 1-wire and z-wave devices. I expect openhab can handle this quite happily, but just thought I'd check first....

I'd like to adjust the heating switch on time to be earlier when it's colder (outside and inside), to give more time for rooms to warm up.

It looks like the razberry board just uses the serial pins and a board like this just uses I2C pins (of course both use power), so a bit of 'adaptation' should allow me to run both boards together.

I could then monitor temperature at a couple of points in most rooms without having to take out a new mortgage!

btw, my raspberry pi is now switching lights on and off just fine, just got a couple of strange log messages to track down to be sure all is well.

[Ben Jones]

One option is the Fibaro Universal Sensor (FGBS) or Door/Window Sensor (FGK101) which both have inputs for DS18B20 1-wire temp sensors. I think the Door Sensor can only take a single DS18B20 but the Universal Sensor can have up to 4 of them connected in series. These each show up as different end points for that ZWave node.

I have both of these sensors with DS18B20s attached talking to openHAB and happily reporting temperatures.

So if you are looking to use these types of ZWave sensors around the place it is extremely cheap to add temperature monitoring as well! 

[Jan-Willem Spuij]

It's no problem to combine multiple bindings and have openHAB control everything. Ben already mentioned some cheap Fibaro Z-Wave devices, in case you want to hook up some simple 1-wire temp sensors.

There is also an option of going for a multi-sensor like http://aeotec.com/z-wave-sensor, and get temp, humidity, light and presence detection combined.

If you have central heating and want to control your radiators, there are thermostat valves like the eurotronic Z-Wave radiator thermostat that has built-in temperature measurement. (Danfoss has thermostats as well, but I don't think they have temperature measurement).

These devices are a bit more expensive, but they combine temperature measurement with other useful functions.

[Hubertus Hettenkofer]

Hi,

i have the FGK-101 installed with the DS18B20 - can you show me your item config to read the correct temperatur?

Thanks

[Chris Jackson]

The binding string should be -:

zwave="18:2:command=SENSOR_MULTILEVEL, sensor_type=1”

Note that if you’ve added the temp sensor after the device was included into the network, then I think you will need to exclude it and reinclude to make the temp sensor work.