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Question on parasite mode on DS18B20

Matt Z
2019-03-25
2019-03-26
  • Matt Z

    Matt Z - 2019-03-25

    Hello Robert, I hope all's well with you.
    I had asked about connecting temp sensors in parasite mode on dew controller v309 mosfet and you said yes it could be done by adding a 4.7K resistor between vcc and sig and following the attached image you sent.
    I see there is already a 4.7K resistor between them, just a little further upstream in the schematic. Are you saying to add another 4.7K resistor, or will the one that's already there suffice?

     
  • brownrb

    brownrb - 2019-03-26

    You can ignore ignore the left side - its the same, BUT, you just wire up the probe connector differetly - remember to keep the length of the probe lead shorter

     

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