Robot Relay Networks for Area Exploration

People use robots to facilitate an activity in everyday life. In everyday life there are many activities that can be done by humans, but in situations that cannot be handled by humans, a tool is needed that can alleviate or assist these activities. In this situation, one of the tools that can be used is a robot, especially a robot with a wireless sensor network so that it can be controlled remotely. Wireless Sensor Network (WSN) is an ad hoc and multihop network, this network also connects devices such as nodes, sink nodes, and routers. Wireless sensor networks can form a network without infrastructure and can transmit data in real-time which can make it easier for humans to do an activity. This paper uses the components of the relay robot itself using a microcontroller as a signal transmitter. This microcontroller has many types, one of which is NodeMCU ESP8266. This type has many features, one of which is the ESP8266 Wi-Fi module and can be programmed with the Arduino IDE. The experimental results show that the increase in time in sending messages in each condition is always increasing, this indicates that the interaction of distance and obstacles affects the signal strength in this system.