HELP!! Temperature sensor

[Babich]

We made the temperature sensor with DS1621 and we have problem reading
temperature. It always displays temperature of -60 C (-76 F). (both of
them). We used following shematic
http://www.electronics-lab.com/projects/pc/010/

Please help us!!!

Sorry on my bad english

 

[hamilton]

Babich wrote:

We made the temperature sensor with DS1621 and we have problem reading
temperature. It always displays temperature of -60 C (-76 F). (both of
them). We used following shematic
http://www.electronics-lab.com/projects/pc/010/

Please help us!!!

According to the web iste supplied:

Tech facts:

* displays both indoor and outside temperature on the Windows
taskbar (see figure)
* plugs in any free PC com port
* range -20 ... +125°C (-4 ... 257°F)

You said it displays -60 C.

Did you modify the software ???

If your wireing is correct, run the software as down-loaded, without any
changes.

Maaybe you can give more information about what you did. If we can not
see your circuit we can not help you.

hamilton

 

[Jamie]

there is something strange about that circuit.
i noticed that its not using the RX input ?
does this mean the chips do not generate a standard
RS232 output? maybe., it this is the case then i think
it maybe OS related. i haven't see the source code the
problem but i bet you maybe working in W2k or XP? in which
case depending on how the code is writne it won't work.
and even if the commEscape function was being used it
still may not work due to timing lag... etc..


Babich wrote:

We made the temperature sensor with DS1621 and we have problem reading
temperature. It always displays temperature of -60 C (-76 F). (both of
them). We used following shematic
http://www.electronics-lab.com/projects/pc/010/

Please help us!!!

Sorry on my bad english