1-wire bus system with Greeneye

tomtoth · Post by **tomtoth** » Thu Jun 14, 2012 7:36 am

So with the greeneye, it supports the 1-wire bus system. What sensors besides temp does it support? I've been to the maxim/dallas site, and there are tons of them, but I'm not quite sure what it is I'm looking for!. Looking for possible humidity sensors and current sensing (on/off) (current sensing is for radiant & solar hot water pumps).. and anything else if I can think of it.

Part numbers or suggestions?
Tom

Post by **ben** » Fri Jun 15, 2012 11:28 am

tomtoth wrote:So with the greeneye, it supports the 1-wire bus system. What sensors besides temp does it support? I've been to the maxim/dallas site, and there are tons of them, but I'm not quite sure what it is I'm looking for!. Looking for possible humidity sensors and current sensing (on/off) (current sensing is for radiant & solar hot water pumps).. and anything else if I can think of it.

Part numbers or suggestions?
Tom

We only have temperature implemented currently using the DS18B20.

Ben

topherhansen · Post by **topherhansen** » Tue Jul 24, 2012 12:52 pm

How many temperature sensors can be monitored simultaniously?
I want to have (potentially) one for every room in my house and have the data uploaded to smartenergygroups.com.

topherhansen · Post by **topherhansen** » Tue Jul 24, 2012 12:53 pm

Also, is there a recommended wire gague/distance to use with these temperature sensors?

Post by **Teken** » Tue Jul 24, 2012 7:38 pm

topherhansen wrote:How many temperature sensors can be monitored simultaniously?
I want to have (potentially) one for every room in my house and have the data uploaded to smartenergygroups.com.

The GEM can handle up to 8 one wire temperature sensors. I believe you can use CAT5e cabling up to 30-50 feet with out incident given the very low current draw. But, if you're able to use a larger 22 gage instead of the standard 24 which is typical of CAT5e even better.

Teken . . .

Post by **ben** » Wed Jul 25, 2012 9:49 am

Teken wrote:
topherhansen wrote:How many temperature sensors can be monitored simultaniously?
I want to have (potentially) one for every room in my house and have the data uploaded to smartenergygroups.com.
The GEM can handle up to 8 one wire temperature sensors. I believe you can use CAT5e cabling up to 30-50 feet with out incident given the very low current draw. But, if you're able to use a larger 22 gage instead of the standard 24 which is typical of CAT5e even better.

Teken . . .

If installing sensors, keep in mind that you must connect them one at a time, select the sensor input and register the number. If more than one is connected while trying to register the number, it'll throw an error.

We'll probably improve on this in the future, for now we're focused on other aspects.

Ben

1-wire bus system with Greeneye

1-wire bus system with Greeneye

Re: 1-wire bus system with Greeneye

Re: 1-wire bus system with Greeneye

Re: 1-wire bus system with Greeneye

Re: 1-wire bus system with Greeneye

Re: 1-wire bus system with Greeneye