When the sensor detects that the moisture content is already below 30%, it sends a signal to the Arduino, which, in turn, activates a water pump to provide hydration to the plant.

There are a flame sensor and a water pump up forward, as well. You can probably guess, the device notices a flame and rushes to squirt water on it. That got us thinking, though.

In Texas — at least around Houston — we don’t have basements. We do, however, have bilges. Both of these are subject to taking on water when no one is paying attention. A friend o… ...

12:22 pm September 9, 2016 By Julian Horsey Using the power of Arduino, Evan Kale has ingeniously transformed a weed wacker into an Arduino-powered metal detector.