The agriculture field plays a vital role in the development of agriculture. In a country like India, this issue is very important because almost 60% of peoples are depending on agriculture, and these peoples are from rural areas. For that instance, there is a solution to this problem is by doing smart agriculture by considering the current traditional methods of agriculture. Hence, this proposed paper aims at making IoT Based Smart Agricultural System. Using sensors, analyze, monitor, and selecting crops, etc. The controller takes the input data from the sensors, and then it processes the entire system after integrating all the peripherals along with the software. This project is working in three phases, [1] Taking the data from the sensors, Sending that data to the Atmega 328 pi controller, and Controlling the device as per the data obtained. The software used for this is Arduino UNO. In this Paper, Sensors are used for sensing the different parameters such as Humidity and Temperature, Smoke, Level, and Light, etc. Atmega 328 pi is controlled by all parameters. The outputs are shown manually onto the LCD, and through the Webpage using IoT. The buzzer used for the alert notifications.