The movement of robot controlling via IoT technology. The field of robotic technology is implemented in many domains. Specific tasks are performed by robots which humans cannot and also humans are takes more time to complete. Robots are followed human instructions and perform the tasks such as security operations, act as spy robots etc. In this paper, we discuss about a smart robotic vehicle that operates on human voice commands, given remotely by using an Android platform based smart IoT device. The robotic assistant is developed on a NodeMCU ESP8266 micro-controller based platform. The voice commands are carried out and this signal is converted to text format and then communicated through Wi-Fi network. This robot is able to move in different directions like left, right, stop, backward, forward.