Cheapest temp sensor and output relay circuit for PC

[James]

Anyone know what the cheapest way to get two temp sensors to report to a PC,
with a single output to power a relay.

Years ago there seems to have been loads of low cost boards, but nothing
around now.

Can anyone point me in the right direction?

 

[SQLit]

"James" <jamesnopam@net.net> wrote in message
news:75xbc.1627$nY5.17447092@news-text.cableinet.net...

Anyone know what the cheapest way to get two temp sensors to report to a
PC,
with a single output to power a relay.

Years ago there seems to have been loads of low cost boards, but nothing
around now.

Can anyone point me in the right direction?

Try Black Box

 

[James]

"SQLit" <SQLitnospam@cox.net> wrote in message
news:XmAbc.94430$Bg.83388@fed1read03...

"James" <jamesnopam@net.net> wrote in message
news:75xbc.1627$nY5.17447092@news-text.cableinet.net...
Anyone know what the cheapest way to get two temp sensors to report to a
PC,
with a single output to power a relay.

Years ago there seems to have been loads of low cost boards, but nothing
around now.

Can anyone point me in the right direction?

Try Black Box

Any chance of a web link? A google search for "black box" is not helpful!

 

[scada]

"SQLit" <SQLitnospam@cox.net> wrote in message
news:XmAbc.94430$Bg.83388@fed1read03...

"James" <jamesnopam@net.net> wrote in message
news:75xbc.1627$nY5.17447092@news-text.cableinet.net...
Anyone know what the cheapest way to get two temp sensors to report to a
PC,
with a single output to power a relay.

Years ago there seems to have been loads of low cost boards, but nothing
around now.

Can anyone point me in the right direction?

Try Black Box

See www.dataq.com the DI-194RS. This is a 10 bit A to D converter. Even
comes with software all for $25! I bought one a while ago just for kicks! It
works fine! Interface a couple of K thermocouples for about $10 each, and
your on your way!

 

[SQLit]

"James" <jamesnopam@net.net> wrote in message
news:q7Bbc.1771$z%7.18868249@news-text.cableinet.net...

"SQLit" <SQLitnospam@cox.net> wrote in message
news:XmAbc.94430$Bg.83388@fed1read03...

"James" <jamesnopam@net.net> wrote in message
news:75xbc.1627$nY5.17447092@news-text.cableinet.net...
Anyone know what the cheapest way to get two temp sensors to report to
a
PC,
with a single output to power a relay.

Years ago there seems to have been loads of low cost boards, but
nothing
around now.

Can anyone point me in the right direction?

Try Black Box

Any chance of a web link? A google search for "black box" is not helpful!

so sorry I would have thought that everyone would know to add www. and .com
to the words.
Guess I was wrong.

 

[Robert L. Bass]

so sorry I would have thought that everyone would know
to add www. and .com to the words. Guess I was wrong.

I read your post and went to www.blackbox.com to see what they have to
offer. I may have missed it but I didn't find anything related to
temperature monitoring devices there. Admittedly I didn't do an in depth
search. If there's a solution within their product offering, would you
share it with us. This is something that comes up from time to time.

Alarm and Home Automation System FAQ
http://www.bass-home.com/faq/masterfaq/faq.htm

Regards,
Robert

=============================>
Bass Home Electronics
2291 Pine View Circle
Sarasota ˇ Florida ˇ 34231
877-722-8900 Sales & Tech Support
941-925-9747 Fax
941-232-0791 Wireless
Nextel Private ID - 161*21755*1
http://www.bass-home.com
http://www.bassburglaralarms.com
=============================>

 

[James]

"Robert L. Bass" <robertlbass@comcast.net> wrote in message
news:d-udndHqnPmSPfLdRVn-jA@giganews.com...

so sorry I would have thought that everyone would know
to add www. and .com to the words. Guess I was wrong.

I read your post and went to www.blackbox.com to see what they have to
offer. I may have missed it but I didn't find anything related to
temperature monitoring devices there.

Same here! so did a google search it case it wasnt something else but still
couldnt find anythinG!

 

[Form@C]

On Sat, 03 Apr 2004 11:19:31 +0000, James wrote:

Anyone know what the cheapest way to get two temp sensors to report to a
PC, with a single output to power a relay.

Years ago there seems to have been loads of low cost boards, but nothing
around now.

Can anyone point me in the right direction?

<grin>
At one time I would have tried this - note that I never have!

Use thermistors as the temperature sensors (max resistance=100k) and
connect them as x & y pots to the "game" port of a sound card (x= pins 1-3
y= pins 1-6). You can have 2 joysticks, so that's 4 possible thermistors.

Your software would read the analogue inputs as a value of 0-255 where
255=5v (short circuit) and 0=0v. Obviously, you won't get these, but
something around the middle!

You can use an output on the printer port to drive a relay if you put a
NPN transistor (with base resistor) in the way.

Don't ask me about software - I haven't programmed in years!


Follow-ups set to alt.electronics only.

--
Cheers...
Mick
Gave up on viruses & trojans - moved to Linux...
Nascom & Gemini info at http://www.nascom.info