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I'm thinking about a project for a set of remote temp sensors for where my dog sleeps in the garrage under my workbench.

The outside temps here can range from near -10 to +115 give or take.

My electronic project skills are kind of limited but would like to see how I may do this.

It could also serve as a early warning for when the Heat lamp and heated bed give out.

I have found a few projects on line but no super detailed instructions.

(I wasn't sure what tag to use on this so I put

Any Ideas ?

Thanks for your time.
ledtech3 9-Dec-13 10:15am
I found several Arduino based projects.
Here is an interesting one.

Here is one that might just fit the bill.[^]

Although I don't want to use SMS I may be able to do something else.

I think this is clear enough to follow along with and the links provided seem to be of great help for parts and resources to complet the project.

Next step, just dive in and do it. :)
If you're still interested, National Semiconductor used to make a broad line of analog ICs at a reasonable price, including a cheap, 4-pin temperature sensor called a LM20. Since Texas Instruments bought out (and destroyed) this excellent company, you have to deal with them now. Try this link:

Temperature Sensor Eval Board[^]

It contains three sensors, and connections to the outputs of each. There are also links to application notes, which usually offer complete reference designs free for your use.
ledtech3 22-Aug-14 18:52pm
Thanks for the link I'll have to check into it more.
I would love to play with this and see what all I can do with them.
ledtech3 23-Aug-14 16:38pm
The Eval board looks interesting but have no Idea how to use them.
I think I need an Idiots giude.
Roger Wright 23-Aug-14 17:21pm
No idiots guide required; you have access to all the idiots you'll ever need right here!:-)

You'll need an A/D converter for whatever resolution you need to convert the outputs of the eval board to digital form. If I recall correctly, the LM20 puts out something like 1 mVdc per degree C, with a full scale range of about 1 volt. A/D converters have come down in price, so you probably can pick up a 16 bit converter fairly cheap. Back in my day they cost about the same as a small sports car, but now they're dirt cheap.
ledtech3 23-Aug-14 20:41pm
Ok my head is going to explode reading thru the paper on thermal couple vs tempeture or something like that.

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