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.

Here is a tested Arduino project that uses 3 sensor probes as water level indicator with 3 leds and one LCD display + a simple controller that turns on a motor when the water has reached the desired ...

It also has a GSM/3G modem, allowing it to report the measured water quality to a central database. All of this is housed in a 3D-printed enclosure that makes the whole setup easy to carry and ...

However, if you're like many home automation enthusiasts, you probably already have a few of those lying around, and you're looking for your next project that's actually new to you. That's where ...

Nice method and analysis. The temp sensor 3 pin devices are simple and cheap but good for 0.5 deg C precision or nearly a full degree in human measure.