Re: [mh] Omnistat Setup

[Daniel D. <da...@ma...>]

I ran a 24 vac line to power my omnistat.  My problem is ( I hope) that even though I followed the wiring diagram my serial cable is a null modem not a straight through.  I am heading to radioshack to pick up a db9f connector.  Surprisingly, they still carry it in their stores.  They usually try to sell me a tv, mp3 player or phone when I go for something "old school."



On Sep 29, 2010, at 23:24, Marc MERLIN <ma...@me...> wrote:

> On Wed, Sep 29, 2010 at 10:38:12PM -0400, Jim Serack wrote:
>> Daniel, 
>> 
>> Your problem might actually be that the RC Thermostat "robs" the voltage
>> source from incoming signals to power the serial signal back to the computer
> 
> That depends how you wired it. Mine gets proper 24VAC from my furnace on a
> separate wire (5 wires to furnace instead of 4).
> 
> Marc
> -- 
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