This Moisture Sensor can be used to detect the moisture of soil or judge if there is water around the sensor, let the plants in your garden reach out for human help. They can be very to useful, just insert it into the soil and then read it. With help of this sensor, it will be realizable to make the plant remind you, I am thirsty now, please give me some water. Grove is a modular electronic platform for quick IOT prototyping. Every module has one function, such as touch sensing, creating audio effects, etc.. Just plug the modules in. No soldering required.