hi all,
i have made a Arduino automatic watering system to help my colleagues caring our plants, using the very basic modules such as pump, servos and moisture sensors. Althougth it is simple and easy to build, it is relay help for the plants. XD
i have wrote the detailed instruction and the firmware to http://www.instructables.com/id/Arduino-Automatic-Watering-System-For-Plants/. 
Wish you a good day!
