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Pressure monitoring with Arduino

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  • #16
    I love this stuff. I haven't got my project going as I'm cobbling up needed hardware but I wanted to point out to OP, et al - watch out for those home depot feed line hoses



    I had one on a toilet that let go after 15 years of flushes. They may look good with braided stainless hoses but the failure point is at the plastic fitting. If you look carefully you will see a casting seam, which is where mine failed. Same goes for washing machine feeds, use the ones with the brass fittings if it's to be in service permanently.

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    • #17
      Yes! Please start a thread about gas monitoring.
      Originally posted by rprade
      There is no rhyme or reason to the anarchy a defective Z-Wave device can cause

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      • #18
        What water flow meter are you using?
        I'm interested in monitoring low flow's for drips and leaks...

        thanks
        Mats

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        • #19
          Photos above are my actual meters. I was putting a new water main in and had the opportunity to run a wire into the underground meter.
          You cant see it in the photo, but there is a magnet on the needle which provides a pulse for each litre that flows.
          One of the reasons for closely monitoring the flow is because the whole house is pressurised at mains pressure and I was parnoid about springing a leak - this setup will detect a very slow dripping tap or in one case a faulty pressure relief valve that was dripping.

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          • #20
            Originally posted by ecuboss View Post
            I have something called a pulse block attached to my gas meter - in reality its just a very sensitive reed relay that sends a simple on/off pulse to homeseer. On each pulse, I run a script that increments several virtual devices and starts timers to calculate the flow. (My water meter is done the same way)

            Many meters dials have little magnets inside them and you can track them. Mine has both a magnet and a shiny "1" which you can use an opto-sensor on. Bit of googling will find people using varios tricks to track your dial going round on the meter:
            http://www.hekkers.net/domotica/howt...rgasusage.aspx
            (I tried the this one first, but wasn't reliable enough for me)
            http://www.bwired.nl/How_rfxcom.asp

            In the end I found this proper attachment for my meter which gives a very reliable clean on/off signal and doesn't look like i'm defrauding the supplier!

            Click on METUR007 for my one:
            http://www.thecodestore.co.uk/shop/details/678/481/energy-and-co2-emissions/ene3-energy-display-devices/accessories/pulse-block.html

            I can start another thread somewhere more appropriate if desired.
            ouch, not cheap for those meter blocks, not for when a piece of blutack and a reed switch seems to do the same thing! Out of interest do you have a wireless solution for gas meter? I have a Current Cost Development board on mine but am interested in another wireless, low power type solution. I just fire a script which calls and makes a calculation and then logs it to the Energy API, I don't know if these are typical values and would be interested if you get broadly similar data...
            Last edited by mrhappy; August 2nd, 2015, 04:55 AM.
            My Plugins:

            Pushover 3P | DoorBird 3P | Current Cost 3P | Velleman K8055 3P | LAMetric 3P | Garadget 3P | Hive 3P |
            Yeelight 3P | Nanoleaf 3P

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            • #21
              Where did you source the reed switch? I used one from a door contact and it wasn't sensitive enough - I read somewhere it needs quite a sensitive reed switch, in the end I bought the proper adapter from these people I think:
              http://www.stream-measurement.com/54...gm-meters.aspx

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              • #22
                thank you for the Arduino code, can you please post the code for 2 pressure sensors from 1 Adriano 0-60 psi, , what homeseer app are you using for homeseer , thank you, Tj

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                • #23
                  The sensors are on ebay:
                  https://www.ebay.co.uk/itm/181110950113

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                  • #24
                    thank you for the Arduino code, can you please post the code for 2 pressure sensors from 1 Adriano 0-60 psi, , what homeseer app are you using for homeseer , thank you, Tj

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