XUE YE LIN
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The Challenge:
Make a miniature bike that drives itself with a limited budget.
The Approach:
Use an Arduino and an IMU to control the direction of a servo motor controlling the front wheel of the bike.
Note: This project is a work in progress, the bike still needs some tweaking in code and design to stay upright.
Hover over the images for details.
Design Features:
The first design of the bike used a nonmodular design. Modularity was added in later revisions to reduce time in between changes by reducing the number of parts needed to be 3D printed. The change also made printing all the parts easier.
To keep the body slim, the micro DC servo that drives the back wheel had to be mounted vertically. The body holding the rotating shafts also had to be as short as possible to reduce deflection. This resulted the custom miter gear and timing belt pulley shaft mechanism. This also helped to reduce the cost needed for expensive small miter gears and timing belt pulleys.
O-rings were used on the wheels to increase traction. A custom-made shaft adapter was used to transfer servo movement to the front wheel.
The control board contains an Arduino pro mini, a DC-DC converter, a motor driver, an IMU, and an on-off switch.
The bike uses metal bearings to reduce friction during shaft rotation and to increase its overall smoothness while in motion.
PRevious
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Portfolio
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