Desain Sistem Monitoring dan Penyiraman Tanaman Tomat Berbasis Internet of Things (IoT)

Air temperature and soil moisture are things that need to be considered in caring for tomato plants. Watering is also important because tomatoes are plants that do not tolerate dry soil. This study aims to monitor air temperature, air humidity and soil moisture as well as watering plants when the soil moisture value is dry. The research method used is IoT-based watering automation with Node MCU components ESP8266, DHT11 sensor, V1.2 SEN0193 capacitive soil moisture sensor, 1 channel relay module, DC water pump, and 20x4 LCD. The test results of the DHT11 sensor on air temperature have an error of 3.09% with an accuracy of 96.91%. The error value for air humidity is 12.34% with an accuracy of 87.61%. The V1.2 SEN0193 capacitive soil moisture sensor has an error of 6.82% with an accuracy of 93.18%. This research has succeeded in watering plants based on the specified value, which is below 60% and stops watering before 80%.