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HELP!! Temperature sensor

Discussion in 'Electronic Basics' started by Babich, May 2, 2004.

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  1. Babich

    Babich Guest

    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
     
  2. hamilton

    hamilton Guest

    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
     
  3. Jamie

    Jamie Guest

    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..
     
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