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HS1101 Relative Humidity Sensor distance from microprocessor? — Parallax Forums

HS1101 Relative Humidity Sensor distance from microprocessor?

CapdiamontCapdiamont Posts: 218
edited 2009-04-20 00:37 in Accessories
How far away can you place one?

Comments

  • FranklinFranklin Posts: 4,747
    edited 2009-04-18 14:57
    How do you plan to connect it?

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    - Stephen
  • CapdiamontCapdiamont Posts: 218
    edited 2009-04-18 21:19
    per the docs, is a method that looks short range.
  • kwinnkwinn Posts: 8,697
    edited 2009-04-18 22:02
    Looks to me like you could use the 555 circuit in the data sheet, measure the frequency, and put it as far away as you want.
  • CapdiamontCapdiamont Posts: 218
    edited 2009-04-19 00:00
    More parts that version, interesting though. Looks like the 555 circuit can be temp compensated. 3.5 to 12v. How long with parallax's circuit?
  • kwinnkwinn Posts: 8,697
    edited 2009-04-19 13:58
    How far away do you want to put it?
  • CapdiamontCapdiamont Posts: 218
    edited 2009-04-19 15:59
    My idea is to have two, and ordered two, to measure the difference in humidity between rooms, or inside and outside.
  • kwinnkwinn Posts: 8,697
    edited 2009-04-20 00:37
    So we are talking about less than 50 feet. I would run some cat5 or phone cable to the outside sensor to provide power on one pair and return the 555 signal on the second pair.
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