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Anyone using a DS1620 as a standalone thermostat per datasheet? — Parallax Forums

Anyone using a DS1620 as a standalone thermostat per datasheet?

WBA ConsultingWBA Consulting Posts: 2,933
edited 2009-08-26 05:44 in Accessories
In the datasheet for the DS1620, it says its nonvolatile memory can be programmed with setpoints to run as a standalone thermostat (bottom half of page 4). I was wondering how well this actually worked. I want to make a temp controlled fan for my entertainment center and this looks like a good fit.

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Andrew Williams
WBA Consulting

Comments

  • Tracy AllenTracy Allen Posts: 6,657
    edited 2009-08-26 00:54
    Hi Andrew,
    It works great. Be sure to avoid supplying power directly from the DS1620 to a load, e.g., DS1620 -> mosfet -> led/SSR, not directly DS1620 -> led/SSR.
    Code example here.

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    Tracy Allen
    www.emesystems.com
  • Beau SchwabeBeau Schwabe Posts: 6,547
    edited 2009-08-26 05:37
    WBA Consulting,

    I concur with Tracy ; I have used this feature of the DS1620 in the attic to vent heat by controlling a fan.

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    Beau Schwabe

    IC Layout Engineer
    Parallax, Inc.
  • WBA ConsultingWBA Consulting Posts: 2,933
    edited 2009-08-26 05:44
    Tracy, Thanks, that's what I was hoping to hear. The code is a bonus, thanks. I took a quick look, but I think I will try to do mine from scratch first for the learning experience. I was planning on running a small 5v fan through a mosfet with the DS1620 output. I already have the fans and mosfets, so I just need to pick up some DS1620s.

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    Andrew Williams
    WBA Consulting
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