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Water Softener Sensor for Home Assistant

Recently I was suspecting my water softener wasn't working. I'd been wanting to build a salt level sensor for it for some time and my suspicion gave me the push.

Parts and Things Used

  • wemos d1 mini (esp8266)
  • sr04 ultrasonic distance sensor
  • dupont wires
  • old KT athletic tape container (or any container that can fit the sensor and the controller)
  • microusb power supply
  • 3m dual lock fasteners
  • dremmel
  • hot glue gun