Methodology
Chassis and Wheels
The Micromouse chassis is the main structure that holds together all the subsystems. It must provide enough space for the microprocessor, batteries, motors, sensors and power supply module. The chassis will be built with an easy to work material like plastic or aluminium. The advantage of using aluminium would be to draw heat away from motors, functioning as a built-in heat sink, but plastic may be easier and cheaper. The chassis need to be small enough so that it is able to make a full turn inside a maze block without touching the walls.
The Micromouse will require two wheels with enough traction to avoid slipping, and castor wheels for balance. The wheel diameter is an important factor to consider. If the diameter is too large, the Micromouse will tip over more easily. Otherwise, if the diameter is too small, the mouse may drag or produce too little torque. The weight of the wheels should be small enough so that they do not add extra load to the motors.
Chassis and Wheels
The Micromouse chassis is the main structure that holds together all the subsystems. It must provide enough space for the microprocessor, batteries, motors, sensors and power supply module. The chassis will be built with an easy to work material like plastic or aluminium. The advantage of using aluminium would be to draw heat away from motors, functioning as a built-in heat sink, but plastic may be easier and cheaper. The chassis need to be small enough so that it is able to make a full turn inside a maze block without touching the walls.
The Micromouse will require two wheels with enough traction to avoid slipping, and castor wheels for balance. The wheel diameter is an important factor to consider. If the diameter is too large, the Micromouse will tip over more easily. Otherwise, if the diameter is too small, the mouse may drag or produce too little torque. The weight of the wheels should be small enough so that they do not add extra load to the motors.
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| Speed Run Robot Wheels 12.5 mm Wide (Designed to fit the Sanyo Denki H546 Stepper Motors) |
Try to keep the centre of gravity low by placing the motors and batteries near the bottom of the chassis. On the other hand, don't make the chassis so low that it can get caught on the seams of the maze. One of the mazes we competed in had steps as large as 5 mm (not 0.5 mm as stated in the rules).
Reference:
http://www.micromouseinfo.com/introduction/chassis.html
http://www.active-robots.com/motors-wheels/wheels/speed-run-robot-wheels-12-5mm-wide.html
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