The machine is a solar operated dryer with belt conveyor having a temperature and humidity Online control . the speed of the conveyor is adjusted as per the temperature inside the dryer Box. The temperature is dependent upon sun orientation , hence if the temperature changes The speed of the conveyor is adjusted accordingly and so also the humidity control fan speed is controlled. It can be used for drying grains such as whea, jowar, bajra…seeds such such as gram , soyabean , coriander etc. Also vegetables like curry leaves, coriander etc