Remote monitoring systems in greenhouse based on NodeMCU ESP8266 microcontroller and Android

Abstract

This study aimed to design a Greenhouse Remote Monitoring system and to immediately evaluate the monitoring system. The Monitoring system was designed based on the NodeMCU ESP8266 microcontroller to expectedly result an Android monitoring display as the output. This research was conducted in Greenhouse at Faculty of Food and Agroindustrial Technology, University of Mataram. An experimental method using greenhouse and hydroponic system was applied to this research. The monitoring system consisted of components that functionally related to each other (NodeMCU ESP8266, Android, DHT11 (temperature and humidity sensor), BH1750 (light sensor), Total Dissolved Solid (TDS) sensors, and other components that further supported by programming language. The observed parameters were the greenhouse temperature (°C); humidity (%); light intensity (lux); and the amount of TDS (ppm). The experiment indicated that the designed monitoring system successfully displayed what the sensor had read then translated it into Android. The average percentage of the Light meter reading errors using the BH1750 sensor (shown) on Android was 2.13%; the average percentage of the hygrometer reading errors using DHT11 sensor on Android was 0.14%; the average value of the thermometer reading errors as well as DHT11 sensor on Android was 0.76%; while the average TDS reading error on Android was slightly above 5% due to increasing temperature inside the greenhouse, especially in the afternoon period.