GSM based SPY Robot

Currently, a lot of research is being carried out in the development of USVs (Unmanned surface vehicles), UAVs (Unmanned Aerial Vehicles). Traditional technology we used is wireless using RF circuits which suffer from many drawbacks such as working range & frequency range. Use of a GSM network can overcome these drawbacks. It provides the advantages of robust control, working range as large as the coverage area of the service provider. This paper illustrates on an approach to control a mobile robot using DTMF tone through the GSM network which can be used to remotely send streams of data for control of robot. The robot is controlled by a mobile phone that makes a call to the mobile phone attached to the robot. In the course of a call, if any button is pressed a tone corresponding to the button pressed is heard at the other end called Dual Tone Multiple frequency. The robot receives these tones is processed by the microcontroller with the help of DTMF, these IC sends a signal to the motor driver IC which derives the motor.