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Hacking a Hand Soap Dispenser I would like feed back Please — Parallax Forums

Hacking a Hand Soap Dispenser I would like feed back Please

Comments

  • hover1hover1 Posts: 1,929
    edited 2010-10-28 16:53
    PIR I'm sure, like auto towel dispensers, auto faucets, and bathroom fixtures.

    Jim
    sam_sam_sam wrote: »
    Here what I asking about
  • sam_sam_samsam_sam_sam Posts: 2,286
    edited 2010-10-28 17:19
    I thought that might be the case

    BWT I have two of these I bought another one to take apart and use in a project here is why

    ...........................................(PIR)..........................................................................................................................
    One thing I see with this (Inferred LED )sensor is that it only start the pump for moment and then it wait until you move hand again then it runs the pump again and so on also you have to have your hand real close to the dispenser for it to do any thing which is real nice for it to be like this because you do not waste any soap
  • sam_sam_samsam_sam_sam Posts: 2,286
    edited 2010-10-30 14:40
    Look like we are both wrong it is an Inferred LED sensor not a PIR sensor that dose it
    Here are the photos of the board it draw about 370 milliamps when the pump is running When it is not running I do not know this yet

    One thing that I am going to try is to see how far apart I can have these sensors and they still work right
  • hover1hover1 Posts: 1,929
    edited 2010-10-30 14:58
    I'm confused. Is it IR sensing?

    Jim
    sam_sam_sam wrote: »
    Look like we are both wrong it is an Inferred LED sensor that dose it there are the photo of the board it draw about 70 milliamps when the pump is running When it is not running I do not know this yet
  • LeonLeon Posts: 7,620
    edited 2010-10-30 15:08
    I think that they use something like one of those Sharp IR proximity detectors. It's one of the applications they mention in the data sheet. It would have to be a lot cheaper, though.
  • sam_sam_samsam_sam_sam Posts: 2,286
    edited 2010-10-30 15:13
    Do you have a part # for one of them

    I do not know if it is because it has a 2 Pin something in a black plastic tube the top sensor shine on it when you move the sensor a way that what make the pump run both Sensor are 2 pins
  • LeonLeon Posts: 7,620
    edited 2010-10-30 15:29
    It's the GP2D120. What you have seems different, though.

    Coincidentally, I'm watching TV whilst using the laptop and I've just seen a commercial for a similar soap dispenser: it's called the Dettol No-Touch Hand Wash System.
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2010-11-01 00:24
    PIR is a specific type of IR sensing that is very sensitive to overall changes and easily sees body heat, but can't tell much else. Some IR sensors are arranged in arrays that can determine direction of movement; others can be calibrated for temperature readings.
  • bill190bill190 Posts: 769
    edited 2010-11-01 10:54
    I just tried out the Propeller Capacitive Touch sensor program and this works without even touching the pad if you have the sensitivity set to very sensitive. You can just hold your finger/hand near the sensor and that will trigger the capacitive sensor "switch".

    Here is a thread on that...
    http://forums.parallax.com/showthread.php?t=117718&highlight=capacitive+touch

    (More threads you can search for...)
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