2. GAMEPLAN STAGE 1: FILL THE BUNKERS: A Test of Speed STAGE 2: ROBO COMBAT: A Show of Power

3. FOR MORE DETAILS VISIT THE TRYST WEBSITE….!!

4. what you need to know... The first robot is always the hardest. So we will take the KISS approach: Keep It Simple, Stupid!

5. your first robot will have 2 wheels driven under the most basic algorithm – Differential Drive. to drive straight both wheels move forward at same speed to drive reverse both wheels move back at same speed to turn left the left wheel moves in reverse and the right wheel moves forward to turn right the right wheel moves in reverse and the left wheel moves forward

6. Wheels and Motors Big wheels will let your robot move faster. Small wheels for slower. But bigger wheels means your robot has less torque to carry a heavy payload Choosing motors would involve calculations of weight, gearing ratios, desired terrain, desired velocity and acceleration, voltage, power consumption, controllability and a whole range of things too overwhelming for a beginner Arey IIT JEE ke funde lagaayo yaar!!

7. Types of motors to use DC geared motors Drive trains Set of gears arranged in a pattern Motor on which a gear box is mounted. Voltage: 6V - 24V Torque: double what you think you will need

8. Specific components you may need –Voltage Regulator –L293D - Motor driver + H bridge Drive a pair of DC motors/Geared Motors Motor supply voltage can go up to 24Volts Maximum of only 600mA current/channel Enough to drive small DC geared motors Remember to add 0.22uF capacitors across both the motors to reduce the effect of noise on the circuitry

9. What about higher current requirement ? Use ULN2003 – current amplifier …and relays for switching ( as explained earlier ) Use protection diode for relays

10. Wired / Wireless Remote control Wireless remote control complexes the circuitry But you can get rid of that long wired tail dangling out of your remote control robot Easiest solution would be to hack those cheap wireless toy cars, take their electronic guts out and use them in your robot For more flexibility, you can build a custom remote control system Use RF Tx/Rx modules and encoder/decoder ICs

11. Tools and some other components Wire Stripper Pliers Variable resistors Switches Diodes Transistor Capacitor Battery clips Solder sucker Soldering iron with stand Circuit board

12. Always follow the principle ‘ DESIGN,THEN BUILD ’ planning things is generally always a good idea “for every hour spent on design is one less hour spent on construction” (and usually low quality construction at that!)

13. Mechanical Aspects Make sure that the machine is properly balanced. Bring the machine’s CG as low as possible. Achieve this by bringing the motors as close as possible to the ground. Make the weight of the front and rear of the machine nearly equal to prevent toppling. Check your motors for enough torque. Try to reduce total machine’s weight by using lighter materials and as less material as possible.

14. Frame basic structure to which you attach everything else. probably the largest part of your robot. make sure it is made of a light weight rigid material such as aluminum. Advantages Reasonably cheap Easy to work on Strong enough Wheel Basics Wheel diameter ( discussed earlier ) Wheel texture : smooth wheel will not have much friction skid while accelerating and braking really rough wheel, has higher friction with the ground consider wear and tear Wheel width : increased resistance to rotating the wheel on a surface Wheel centre hole diameter : depends on length and diameter of your motor output shaft

15. Gripper design – mechanisms Material used : Aluminum Use 2 motors, one each for the hands of gripper. Use single motor mounted on one hand and other coupled to it using gears. gripper should be light weight : use light weight motors use foam or rubber to increase friction Design the grip acc. to the object. For picking up the ball use cup shaped grip.

16. Tools and some other components

17. Places to acquire materials Everest Lajpat Rai Shop no. 629 Motors, Solenoids, Light sensors, Encoder disks 23869522 Mehta Brothers Lajpat Rai Shop No.614 ICs,SMD components,LCD,Wireless Radio modules, Connecters computer type, 23869876 Mehta Shop No. 463Lajpat Rai Battery,ICs 23868294 Prakash Radio 1675Bhagirath Palace Relays + connecters, switches,push buttons R Kumar Shop no. 3602, Ph. 23912860 Mechanical components

18. ‘difficult to describe but you will know one if you see one’