Above is the picture of the robot with Low-High gear ratio (the left side) and High-Low gear ratio (the right side). When it is Low -High gear ratio, one rotation of the motor will rotate less than a half cycle of the next gear which is aligned to the other smaller gear. one rotation of the smallest gear will rotate even less amount of rotations of the last gear which will turn the wheel. In this case, the robot loses the speed. However, the robot turns out to be steadier and more powerful. If the group uses Low-High gear ratio, the coding also has to be changed because the robot will not be able to perform quick counter-attacks.
After re-designed the robot in order to boost the speed, the group changed Low-High ratio to High-Low ratio. Unlike Low-High ratio, one rotation of the motor will cause a full rotation of a big gear, which turns a smaller gear more than once. This small gear is aligned to the other big gear which rotates the smallest gear that is directly connected to the wheel. Therefore, one rotation of the motor causes multiple rotations of the wheel. The robot, obviously, ended up being a lot quicker. On the other hand, the robot lost its power and steadiness. The testing robot which is in a very basic form could push away the robot with High-Low gear ratio.
The group thought that even though the robot loses a lot of speed, it would be the best to be steadier. During the lab in Week 5, the group will upgrade the robot with Low-High gear ratio. Also the coding needs to be done and be tested.
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