For our first challenge in the robotics course, we were tasked to build mechanical systems to a robot in order to lift 1kg of weight 10 cm into the air. Before we built the robot, we experimented with 3 types of mechanical systems which are listed below.
Before building the mechanical systems, here is a picture of the tools that we used. 
For our simple train robot, Deebz Corps and Vi Corps decided to form a partnership to produce a robot that can lift 1kg 10 cm into the air through incorporating various well-known mechanisms.
One mechanism that we used into our robot was the chain drive.This mechanism requires one large and one small sprocket on a side. When this happens, the sprockets rotate clockwise with the same velocity. To fix this, two shafts need to be placed through the box to fasten the sprockets. On the opposite side of the sprocket, a handle is attached to the large sprocket shaft, which turns the gear system. When the chain drive moves it causes the rope to tug. Note that all the wheels have a shaft collar in between the box and the wheel in order to allow for smooth movement. The chain drives requires a 36 tooth gear and a 24 tooth gear. The chain drive was responsible for moving the intake rollers which is responsible for lifting the 1kg of weight.
Another mechanism that was used in our robot was the simple gear train. A simple gear train consists of a large driver and a small follower. This system works when the driver is turned clockwise causing the follower to rotate anti-clockwise. To connect the gears to the box, two shafts are extended across. To construct this mechanism, we used a 24 tooth sprocket along with a 36 tooth gear. As the teeth align, the 24 tooth sprocket rotates to move the 36 tooth gear which then concludes in the chain drive functioning.
The third mechanism used was a belt drive. The shaft of the wheel on the left has two intake rollers placed in between the box. A strand of rope is wrapped around the intake rollers while the other end of the string is placed through a hole in a plate that is attached by two screws on the metal box. The other end of the rope is then tied to the end of the 1kg weight, in order to lift it. This then allowed the gears to move while lifting the 1kg of weight.
Below is an image of the final robot, attached to the 1kg of weight which is the tomato can.
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