Development of Automated Nutrient Composition Control for Fertigation System Using IoT Application

This paper is development of solar power automated nutrient composition control for fertigation system. The automatic mixing system that is controlled by Arduino Uno board. There are three 30 litre buckets for water and a stock of fertilizer A and B and one 10 litre tank for mixing. Three units of 12V DC water pumps will be used for fertilizer A, B and water and two more units will be used in this system to control water flow to the chosen crops. The solar power supply used consists of a 3 Watts mono-crystalline photovoltaic (PV) solar panel, 12/24V 10A solar charger controller and a 12 V rechargeable li- on battery. EC meter which is Analog EC Meter SKU: DFR0300 EC sensor module will be used as sensor to read the value of EC. Relay will be connected to water pump as its function is aim at controlling the opening and closing of the circuit contacts of an electronic circuit. The data of nutrient EC from Arduino Uno will transfer to NodeMCU ESP8266 and will be stored in Blynk application as implement of Internet of Things (IoT). The EC meter must react to the automated mixture nutrient with desired EC and the solution must flow to the chosen crops based on user desire which are chili plant or eggplant.