Topic: 1 Wire to ethernet

[kanewolf]

Has anybody used the HA7NET 1-wire host?  I would like to monitor temps a few different places in the house and 1-wire seems like the cheap way to do it.  I would monitor it from a linux box using OWFS.

[Bushman]

1-wire is great, cheap and reliable.  Have not use the H7 (crazy!! expensive) but I use this one:  http://www.redhillnetworks.com/products/webcontrol/webcontrol-faq.html  less than a 1/4 the cost.

[Fox_Of_The_Wind]

1-wire is great, cheap and reliable.  Have not use the H7 (crazy!! expensive) but I use this one:  http://www.redhillnetworks.com/products/webcontrol/webcontrol-faq.html  less than a 1/4 the cost.

How much work was it to set that up? looks like you just get a board? and no sensors?

[Bushman]

I had a couple of DS1820 temp sensors and bought a hum sensor for 15 bucks off ebay.  9v PS was 4 bucks.  VERY easy web interface to set it up.  I'm currently working on some relay control.  A fun box.  WHole thing cost under 50 bucks. 

[Fox_Of_The_Wind]

url on where u got the board at?

[Bushman]

http://cgi.ebay.ca/Remote-monitor-control-temp-humidity-I-O-WebControl-X10-/270781396861?pt=BI_Control_Systems_PLCs&hash=item3f0bd4377d  They have a home site as well.

[WeatherHost]

url on where u got the board at?

What?

Are you asking on which website he found the board?

-----------------------



I guess I'm lost on the subject at hand.  If you're going to run a wire and do all the drilling and other associated work, why run a single conductor?  Why not make it worth the effort and run a four pair or other multi-conductor cable?  Even if you only use one pair, at least you'll have spares available if you want to add something later or if the one pair goes bad for some reason.  If you only run a single conductor and something happens, you have nothing to fall back on.

[wxtech]

url on where u got the board at?

What?

Are you asking on which website he found the board?

-----------------------



I guess I'm lost on the subject at hand.  If you're going to run a wire and do all the drilling and other associated work, why run a single conductor?  Why not make it worth the effort and run a four pair or other multi-conductor cable?  Even if you only use one pair, at least you'll have spares available if you want to add something later or if the one pair goes bad for some reason.  If you only run a single conductor and something happens, you have nothing to fall back on.

1 wire is a misnomer.  It's 1 wire and a return.  1 wire systems commonaly use the CAT5 cable.  CAT 5 cable is 4 pair twisted which gives better noise rejection.  You could use a single wire coax.  Even though there are 8 wires available, normally only two are used.  It seems like it should be called '2-wire'.  It's all based on the I square L (I2L) system of connecting devices.
It's called 1 wire because it gets power from the signal, a parasitic circuit.

[Gulfcoast]

Now, on a one-wire system (which is really a two-wire)... what kind of cable would you run outdoors to bury, or can you put it underground in sealed PVC?  Thanks

[wxtech]

Hobby Boards has a good 'how to' place.
http://www.hobby-boards.com/catalog/howto_basics.php
And they sell Tim Bitson's book, "Weather Toys".  Which I recommend.

[WeatherHost]

Now, on a one-wire system (which is really a two-wire)... what kind of cable would you run outdoors to bury, or can you put it underground in sealed PVC?  Thanks

They make a direct burial Cat5 if you want to pay for it.  Shielded, jelly-filled and armored.

[WeatherHost]

1 wire is a misnomer.  It's 1 wire and a return.  1 wire systems commonaly use the CAT5 cable.

OooooooooKay.

[Bushman]

cat 5e DBC runs about $130/1000 ft.

[Fox_Of_The_Wind]

looks to deep for me lol. Thanks anyway

[Bushman]

Your loss.  1-wire is easy-peasy.

[Fox_Of_The_Wind]

No time now. Have to work more hours. That takes away from my fun. I will keep this in mind