Luckily no significant damage as the water didn't get high enough to enter any of the computer cases, and everything else was on shelves/tables or otherwise high enough off the floor to escape. But I wasn't looking forward to it happening again, and I wanted to fix the problem.
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The only remaining step was to code up a nice touchscreen HMI to crunch the data. It collects water level measurements at 1 Hz, does some averaging to reduce noise, then calculates tank volume and flow rate in L/hr.pic.twitter.com/QH79c5Ka8l
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I plan to also track pump duty cycle over the long term (seconds on vs off over the past hour or something). Current/planned alarm conditions include water on the floor, tank level above the float, and flow rate approaching the pump's capacity.
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Then the only remaining piece will be adding logging so I can collect trends over time and test effectiveness of outdoor drainage upgrades, and installing a 24V UPS so that I still get alarms even if the power goes out.
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