4 ms·

Hey, also, why not just find the height of the water level by attaching something ultrasonic to the inspection hatch (or whatever). https://www.adafruit.com/pro

• vosper 5y ago
  Not only is this a really cool idea, that sensor is awesome! I love that you can get something like that for $30.
• abraae 5y ago
  Not accurate enough. I want to be able to quantify e.g how much water was used to water the garden. In a 25K litre tank, that's a very small change in level.
  • groby_b 5y ago
    You'll have the same issue with pressure sensors, though? Maybe a flow meter is a better choice for that. (Bonus, you can use that to cross-calibrate with the pressure/level sensor)
    • snovv_crash 5y ago
      Yep, if you use flow plus pressure, you can run an EKF to get much more accurate results.
  • snypher 5y ago
    You can get ultrasonics with millimeter precision but they're $300.