climate change phenomenon is an important environmental challenge of the world that has increased its speed with the increasing extension of greenhouse gases and remote relationship phenomena. changes in precipitation level, drought occurrence and in the level of surface and groundwater resources are the recognized consequences of climate change. in order to study climate change phenomenon cons...

The prototype of an automatic water tank filling system based on a sonoff smart switch that works the volume level in has been successfully created. This study aims to determine working principle and system. sensor used this is float type changes value high water. For tank, also have as drain disconnect electric current pump. design results show can work well, where if below 20% then pump will ...