Project Review: Cell phone Operated Land Rover System

You can find this project and its details in this site link: Cell phone Operated Land Rover System

This site links provides following details:

·         Control details
·         Circuit and working, Construction and Testing
·         PCB layout in PDF [zip], Source code in webpage only
·         Initial setup, parts list, App-test for motors

What are you building?

In this project, 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 of the call. This tone is called ‘dual-tone multiple-frequency’ (DTMF) tone. The robot perceives this DTMF tone with the help of the phone stacked in the robot.

The received tone is processed by the ATmega16 microcontroller with the help of DTMF decoder MT8870. The decoder decodes the DTMF tone into its equivalent binary digit and this binary number is sent to the microcontroller. The microcontroller is pre-programmed to take a decision for any given input and outputs its decision to motor drivers in order to drive the motors for forward or backward motion or a turn.

Benefits:

Conventionally, wireless-controlled robots use RF circuits, which have the drawbacks of limited working range, limited frequency range and limited control. Use of a mobile phone for robotic control can overcome these limitations. It provides the advantages of robust control, working range as large as the coverage area of the service provider, no interference with other controllers and up to twelve controls.

Parts list:

ATmega16 AVR Microcontroller chip, MT8870 DTMF decoder, L293D motor driver & 2-DC motors, robot chassis etc.

Block Diagram of system:

For all such project review posts list click here: 17 Robotics Project Ideas for project seeker.

…till next post, bye-bye and take care.