Abstract
This paper presents an application of ESP8266 node MCU in building a networked laboratory door opening and closing system (NLDOC system). The article mentions the function of the ESP8266 node MCU 1-3, and the Arduino application to serve as the basis for the development of an application that connects computers and smartphones 5-6, allowing to control the door latch of the practical labs remotely via Wi-Fi combined with security monitoring through the camera system 4.
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