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A leaking washing machine, overflowing tub or sink, or leaky pipes or toilet can cause considerable damage to a home if not detected and shut off early. Years ago, a washing machine water valve stuck open while washing clothes late at night. I awoke in the middle of the night to find a flood in the washer/dryer vestibule resulting in $12,000 in water damage. Since that time, I have been reluctant to run the washing machine at night or at any time when someone is not home to watch over it. This is not always convenient and it would help to have a solution that can detect a water leak and signal me via a local alarm (for when I am at home) and/or a smartphone notification (for when I am out).
Leaky or humid basements and leaking water heaters present similar problems. Adding a second water leak detection sensor, as well as temperature and humidity measurement to the project, can cover all of these bases.
The Water Leak Detector (WLD) is designed to detect leaks and to notify the user in time to contain the damage while it is still minor. To this end, the WLD provides both a local audible and visual notification and a remote notification to the user’s mobile phone. The WLD is designed to support two sensors, each of which may be placed anywhere that can be cable connected to the WLD electronics.
The WLD will alarm with a puddle as small as 2 mm deep. An alarm condition exists whenever either of the sensors detects the presence of water. The alarm condition persists until both sensors are dry, in which case the WLD automatically clears out the alarm condition and re-arms for subsequent triggering of a water leak alarm.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
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