Solution

My project aims to provide a solution to this problem. The soil moisture sensors are placed at two different levels to detect the level of the water in the container. Level 1 is the lower level and is indicated by the pink dot and level 2 is the higher level and is indicated by the orange dot. Different sounds emitted by the piezo indicate the current level of the water, an initial alert is sounded when the water level is below level 2, a second more urgent sound is emitted when the water level is below level 1. The LED light indicates when the water level is optimal i.e. it is above both levels 1 & 2, it is indicated by the green dot.