This article aims to show a solution for people and companys who constantly face issues with internet signal loss. Therefore, taking this approching of internet connection failure as the case study and utilizing the NodeMCU, relay, libraries ESP8266Ping.h and Gsender.h, it was made a prototype so that the modem automatically stores the drop-down and the return time of connection. Thus with the fall and return times, these informations will be sent to an email to be used as control information.

The proposed project aims to develop a data acquisition system using the Internet of things concept. The system monitors the environment in which a solar photovoltaic module is located and sends the generated voltage, ambient temperature and light incidence data to a cloud server through the Message Queuing Telemetry Transport (MQTT) communication protocol. The MQTT message is listened by a program running on the cloud server and the data received is stored on the same cloud server and can be visualized by any allowed remote user.