Sistem Penyiraman Tanaman Otomatis Menggunakan Sensor DHT11

Along with advances in technology, watering plants manually is considered less efficient because it requires the owner's time and effort. The purpose of this research is to design a prototype of an automatic plant watering device using the DHT11 sensor. This study uses a field experiment method, where the design is made according to the conditions in the field. By utilizing the Arduino IDE software using the C programming language and ESP 32 as the main control system that will manage all input and output components. The DHT11 sensor will detect the temperature and humidity of the air around the plants, the output will be displayed on the I2C 16x2 LCD screen so that users can see the air temperature values in real time. In addition, the output from the DHT11 sensor will also send an on/off command to the relay. This command is used to control the flame of the water pump. The results obtained from this study are that the relay will turn on automatically when the DHT11 sensor detects an air temperature of more than 30 ℃ and at that time the pump will automatically circulate water. When the DHT11 sensor detects an air temperature of ≤ 30℃ the relay will automatically turn off and the water pump will not turn on so the water will stop flowing. Thus the resulting prototype can be used as an automatic sprinkler design with the DHT11 sensor as an air temperature detector.