ACKNOWLEDGEMENT. Sagar Agrawal Parikshit jha Apar Sinha Gaurav Chauhan

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1 ACKNOWLEDGEMENT Sagar Agrawal Parikshit jha Apar Sinha Gaurav Chauhan

2 Tables of content Topics Pages Abstract 4,5 Introduction 6 Components Description 7-10 Software Flow of Control 11,12 Assembled bot snapshots Conclusion 16 References 17

3 Abstract The project basically deals with implementation of wireless Xbee controlled robot. We used a Xbee module as a transmitter connected through Xbee explorer usb to send command through pc. We connected signal pins of two servo motors to the Arduino. Arduino based upon the command received sends signals to motor which then moves accordingly. We implemented the following movements for our robot: Forward Backward Move right both motors move in forward direction both motors move in forward direction left motor moves with faster speed than right motor Move left right motor moves with faster speed than left motor Rotate left diagonal only right motor moves Rotate right diagonal only left motor moves Move back left same as Move left but in backward direction Move back right Rotate back left diagonal Rotate back right diagonal same as Move right but in backward direction same as Rotate left diagonal But in backward direction same as Rotate right diagonal But in backward direction

4 Rotate left right motor moves forward left motor moves backward Rotate right right motor moves forward left motor moves backward Stop both motors stop After setting up these basic movements we installed Ultrasonic Sensors Buzzer Battery for motors,arduino. The description of components is given in next section. Introduction

5 We started with idea of making a wireless robot but then we thought if user is controlling motion of bot through pc,then he has to take care of giving commands as well as make sure that bot doesn t hit an obstacle or fall from height. So we proposed these solutions 1.Install ultrasonic sensors in front,back,frontdown and backdown. 2.Install Xbee controller so that user can give commands easily to robot through Xbee interface board. Also use the above sensors to avoid obstacles. As we progressed we implemented the above solutions with some modifications. SOFTWARE s FLOW OF CONTROL:

6 MOVEMENT FUNCTIONS OF BOT TH E FLOW OF CONTROL IS: These were the commands and their corresponding functions:

7 F forward B backward r move right l move left q move left diagonal e move right diagonal z back left c back right v back left diagonal n back right diagonal a rotate left d rotate right s stop THE ABOVE COMMANDS WERE GIVEN THROUGH X CTU SOFTWARE INSTALLED ON PC WHICH HAD xbee MODULE CONNECTED TO IT. Furthermore, xbee connected to arduino was configured to be the coordinator in AT mode of the network and xbee connected to PC a router also in AT mode. Router s destination address was set to ooooh which means it communicates/sends data only to coordinator of the network. Coordinator s destination address was set to FFFFh which means it communicates/sends data to all xbees on same network in our case it was only one that was router connected to PC.

8 Conclusion We conclude that the system can be applied to automobiles wherein the vehicle will override the user command if it detects an obstacle thus preventing accidents. We have used a buzzer which rings when there is any obstacle around bot. Similarly, an alarm can be installed in automobile which will alert the people in surroundings so that if car was unable to stop and accident happened then they could know that some accident has occurred and they can help the passengers in automobile. Advantages of our bot: It is easy to operate as it can be controlled through pc, usb controller. The code is simple and efficient. Less expensive and light weight. Its functions can be upgraded by changing control software or more features can be easily added to it. Our project can be easily extended to give control of bot to multiple pc s by connected xbee radio s to them configured as router also they can also monitor the temperature all this can happen without any modifications.

9 References

Robotics II. Module 1: Introduction to Data & Advanced Programming Blocks

Robotics II. Module 1: Introduction to Data & Advanced Programming Blocks Robotics II Module 1: Introduction to Data & Advanced Programming Blocks PREPARED BY Academic Services Unit December 2011 Applied Technology High Schools, 2011 Module 1: Introduction to Data & Advanced