Development of a Prototype Learning Model for the Hydroponic System based on Arduino Nano

Technological developments have brought convenience to human life. Many things can be done today to solve human problems more efficiently without spending a lot of money, time, and energy. One of these technological developments can be found in agriculture. An automatic tool project based on the Arduino nano microcontroller will monitor hydroponic plants, assisted by sensors to detect water level, the temperature around the plant will be detected by a sensor DHT-22, the level of light intensity using the sensor BH1750 water level and room temperature will be displayed on nextion 3.5" as a human-machine interface. The purpose of designing this tool is to realize an automatic hydroponic system with LED light as a substitute for sunlight, a pH sensor to read the acidity level of a solution for plants, a ppm sensor to see the viscosity level of a solution for plants, and several motors to provide nutrition in a proper manner automatic and also to maintain water circulation, here is also provided a human machine interface to see the condition of the plant along with planting media and solutions. Based on the value of the test results, the entire hydroponic system is able to work well, all values that affect hydroponic plants are always in their proper condition. The temperature in this hydroponic environment is continuously monitored by using the DHT-22 sensor which aims to get a temperature that is always as stable as from a temperature range of 27°C to 35°C, the expected pH is in the range of 6.5 to 7.4, and the ppm required for hydroponic plants is ranging from 1050 ppm to 1400 ppm.