We are sure you've seen the gears in the LEGO Mindstorms EV3 sets. They are pretty easy to use. Just add an axle and you can now rotate them. Add two gears working together and you can do miracles, like a magician. And if you put them perpendicularly to each other it gets very interesting. This is our goal with the MotoCar robot in A robot a 'day'.

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- #686
- 16 Jan 2018
Gear wheels for lifting
We use the gears to construct a mechanism that could lift objects. The gear wheels are placed perpendicularly. One is the driving wheel and the other is the driven wheel. When the motor rotates, the fork at the front will move up and down.
Balance of the construction
Notice how there is an additional frame at the bottom front of the robot.
The purpose of this frame is to keep the robot from falling. What will happen if you remove this frame? How will this influence the behaviour of the robot? Well, the robot will fall. You should always construct robots that are well balanced. and do not fall in their normal...day to day... activities.
Courses and lessons with this Tutorial
This Tutorial is used in the following courses and lessons

A robot a "day" keeps the questions awake. Version 1
"How to use the LEGO robots to facilitate the learning of robotics by my student at home" or simply put - "what to build now?"
After enrolling in this course we will send you a few (1-2-3) emails each month with a title "A robot a 'day'". Each email contains a robot building instructions and/or video tutorials and/or tasks that should be accomplished. After a task is accomplished we might sometimes ask for a video or picture.
This process gives a structure of the learning process where you can learn from the content. The student participates in a course, but from home and on the schedule that you decide.
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MotoCar Bot. Work with gears and levers. Two magic tricks at once. Robot 5
"How do you build a forklift using only gear wheels and levers without a rake"... Ok, we would admit that is a difficult question. It even sounds difficult. So let's start with something easy. A LEGO Mindstorms EV3 robot. It lifts objects in the air. It uses two gear wheels that work together and then move in different directions and are placed perpendicular to each other... This sentence kind of got difficult again... Let me try again.
Follow the building instructions with these 70+ steps and you will have a very nice robot and you will learn a simple trick of how to use gears and change the directions in which they rotate.
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