My role in ROBOCON

The first part that i am working on is figuring out the mechanism. We design and fabricate lots lots of mechanism, frame, structure for my Traveller.

Its been a few "generations" and finally the latest generation is a up on satisfactory level.

Its a cross based robot with center of mass allocated in the middle since the heaviest part is at the axis. This structure is capable of self revolving at the same point of the plane. However its design has a flaw. It cannot go up any bumps or "small ladder step" ground due to its front and back wheel is not driven. So either one of the their shaft has to be shifted higher a bit.

end of mechanism description.

Now, i am taking up the role of mechatronics. I am the programmer of the robot and the circuit board designer.

I am using pic basic pro to write programs. Despite our seniors have worked with infrared sensors, i am working on pioneering the usage of servo motor. Servo motor is basically and inpulse receiver. This motor sense the pulse width and then determine the angle of rotation.
So its inpulse receiving period is 20 micro secs. Within this period you gonna give it pulse. A full rotation is ranging from 0.6 micro seconds to 2.35 micros seconds. When you program, you high the port the giving out the pulse for the desired seconds then low for the remaining ( 20 microsec minus the desired seconds). Thats what basically a servo does.

Come to power supply to servos. I uses external power for them so i need to develope an external crcuit board. What i need are voltage regulator ( 7805 for 5 volts), 100 micro farads and 0.1 micro farads capacitor (uses as buffer),~~460 ohm resistor and LED (as indicator and its optional).i design the circuit and voila it works.

Cant believe i am doing mechas....well meche is a generalist....Meche Rocks!