$3 Water Flow Sensor

I have NO idea what I'll do with this, but ordered one anyway. Maybe someone else can use this jewel. A hall-effect sensor water turbine for under $3. Cool. erco's first purchase of 2018.

https://www.ebay.com/itm/Water-Flow-Sensor-Switch-G1-2-Hall-Effect-Meter-Control-DC-5-15V/223122189723

More info at https://www.gearbest.com/sensors/pp_009181886235.html

turbine.jpg
"When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

- Pablo Picasso

Comments

  • erco wrote: »
    I have NO idea what I'll do with this, but ordered one anyway. Maybe someone else can use this jewel. A hall-effect sensor water turbine for under $3. Cool. erco's first purchase of 2018.

    Get used to writing 2019 in the checkbook! :)

    Infernal Machine
  • Erco I would use the cheap water flow meter for MPPT optimization of a directly driven (no intermediate battery) solar water pump.
    This flow meter enable you to optimize the smoothed power of the entire system, and not just the instantaneous electrical motor power.
    When you are using PWM control, it is tricky to measure the instantaneous motor voltage and current.
  • For me, I have hard water, so the filter screens on the washing machine have to be checked more often than typical. Since each of the cold and hot water supply lines to my washer already have two hoses connected end to end to make the distance to the washer, I could use 2 of these in place of the hose joiners so I could monitor hot and cold water flow for the washer. When the flow dips below a lower control limit, I would know that the filter screen may be getting clogged/corroded. Could also use it to see the difference between hot and cold water consumption for different wash cycles. I would also finally find out what rinse water is used for a warm water wash; is it cold or warm?
  • I've always wanted to build something to detect water flow to my shower to automatically turn on the exhaust vent fan. This may work for that.
  • Don M wrote: »
    I've always wanted to build something to detect water flow to my shower to automatically turn on the exhaust vent fan. This may work for that.

    Neat idea! Or keep tabs on how much water the kids are using during their shower. Use too much, and it cuts off. :)
  • Don M wrote:
    I've always wanted to build something to detect water flow to my shower to automatically turn on the exhaust vent fan. This may work for that.
    Eh, too complicated. I solved that issue years ago by installing a hygrostat in the exhaust fan circuit; this one:

    https://ordering.fwwebb.com/woitem/99184*1

    -Phil

    “Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away. -Antoine de Saint-Exupery
  • I would not be comfortable using a cheap plastic sensor such as this in a permanent installation, a failure could cause a great deal of damage.
  • Speedometer for Ken's Autonomous Boat? ;-)
    Whit+

    "We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney
  • ercoerco Posts: 19,470
    Don M wrote: »
    I've always wanted to build something to detect water flow to my shower to automatically turn on the exhaust vent fan. This may work for that.

    I just put a thermistor on the tub's hot water copper supply line and "piped" that resistance into a voltage divider and lm339 comparator (with hysteresis resistor) to a fan relay. Instant on, plus it's adjustable to stay on a while after the water flow stops and the pipe cools down.
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • @erco.
    Nice new avatar.
    Infernal Machine
  • ercoerco Posts: 19,470
    Gee, thanks for noticing! Doing some logo & graphics exploration for various projects. @Ken Gracey , need a cool ambigram for your Flip module?

    flip.png
    540 x 275 - 14K
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Seairth wrote: »
    Don M wrote: »
    I've always wanted to build something to detect water flow to my shower to automatically turn on the exhaust vent fan. This may work for that.

    Neat idea! Or keep tabs on how much water the kids are using during their shower. Use too much, and it cuts off. :)
    OT. Reminds me of when my wife and I were living on our boat and our son came to visit. He was having a shower and we told him to hurry up as he was using too much water. After telling him a number of times, my wife hit the breaker to the water pump. Amazing reaction ;)
    My Prop boards: P8XBlade2, RamBlade, CpuBlade, TriBlade
    Prop OS (also see Sphinx, PropDos, PropCmd, Spinix)
    Website: www.clusos.com
    Prop Tools (Index) , Emulators (Index) , ZiCog (Z80)
  • Erco,

    'Love the flip ambigram. Did you design it?

    -Phil
    “Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away. -Antoine de Saint-Exupery
  • ercoerco Posts: 19,470
    Sorry no, just came across it and liked it. Too good not to share here IMO.

    I'm an "Angels & Demons" fan... ambigrams aplenty in that movie.

    HNY 2019 PhiPi! You remain my forum hero!
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • ercoerco Posts: 19,470
    BTW, plenty of Ambigram generators on the web. This from https://flipscript.com/en/flip



    phipi.png
    375 x 275 - 147K
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • xanaduxanadu Posts: 3,278
    edited 2019-01-07 - 21:25:12
    I wired the bathrooms fans to the light switch. Sometimes hot water and humidity are not the reason the fan needs to be on ;)

    Love the logo erco!
  • xanadu wrote:
    Sometimes hot water and humidity are not the reason the fan needs to be on ;)
    True enough. I've often thought of putting a methane detector in parallel with my humidistat.

    -Phil
    “Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away. -Antoine de Saint-Exupery
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