Water meter produces huge consumption when touching the pin

ESPHome
1

I have created a water meter based on this guide:

Already during the assembly I have notices, that touching the pin where the impulse sensor is connected generates huge amount of consumption within a fraction of a second (hundreds of litres). I assume its somehow related to grounding the pin or something.
The issue is, that even if i put the esp board in an enclosure, i still get these false readings when several hundreds of liters are apparently consumed within a few minutes - i am assuming its some spiders or something crawling around the board in the basement.

Is there a way how I could circumvent this behavior?

2

The sensor wire is NO (normally open) meaning that the GPIO pin is floating and will react to induced noise easily. You should enable the pin pull-up resistor.

- platform: pulse_meter
  pin:
    number: GPIO12
    mode:
      pullup: true
    name: "Water Pulse Meter"
    unit_of_measurement: "liter/min"
    icon: "mdi:water"
    total:
      name: "Water Total"
      unit_of_measurement: "liter"
1 Like
3

apparently adding the pullup: true parameter did not resolve the issue. for example today, the water meter shows 330 litres consumed when no one was at home. if those measurements were correct, my water bill was twice as much as my electricity bill.

4

just repoting back after some time. this “meter” is utterly unreliable. it shows in november i spent 3.5 million litres of water. Need to find some other solution

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