Internet of Things Network Handover for Hydroponic Cultivation

Internet of Things (IoT)-based hydroponic systems heavily relies on an internet connections for monitoring and control data transmission. Most hydroponic plant parameter monitoring and control systems use only one type of internet network source, so that if the internet network connection is unstable or disconnected data cannot be sent and accessed by farmers, causing interference in monitoring and control. To address this issue, this research developed a system that allows the device to automatically switch internet network sources. The method used to switch internet network sources is by using the TTGO T-Call ESP32 SIM800L microcontroller, which has two internet network modules, namely WiFi and GPRS. The parameter used to switch internet networks is the RSSI value. The test results show that the network switching system works well, as the network source can switch automatically to a stronger network when the signal weakens, ensuring a stable connection for data transmission.