Robocon 2008

Strategies in competition is more important than high equipment. Sometime we no need wasting our energies too many but just usefull our brain and brilliant in making the decision.

This robot using stepper motor, fiber optic sensor and also interfacing with C language programming. It was programmed to follow the line and executed the task that was given to collect the white butter on the pot.

Double Gear Box

Some robot have used double gearbox left/right independent 4-speed. The maximum voltage is 5V.This set gearbox can be assemble for 4 different gear ratio. Select one according to application before commencing assembly. Gear ratio can be altered from 12.7:1 to 344.2:1 by gear combination.

Type	Gear ratio	Torque	Rotation
A	12.7 : 1	94 gf . cm	1039 rpm
B	38.2 : 1	278 gf . cm	345 rpm
C	114.7 : 1	809 gf . cm	115 rpm
D	344.2 : 1	2276 gf . cm	38 rpm

Obstacle Sensor

Sharp GP2D12 IR Range Sensor - 10cm to 80cm

• Infrared rangefinder 10cm (~4") to 80cm (~30")
• Analog Interface
• Operating supply voltage is 4.5V-5.5V
• Suitable to use as a sensor for a obstacle robot

Read the distance of the object in front of your robot. The Sharp GP2D12 IR Range Sensor takes a continuous distance reading and reports the distance as an analog voltage with a distance range of 10cm (~4") to 80cm (~30"). The interface is 3-wire with power, ground and output.


Micro beam sensors EX-D200E can used to sense the object. This sensor have built-in amplifier. Selecting output operation by connecting control wire will make it dark-On or light-On. The maximum sensing range is up to 200mm.Its need 12V voltage supply.