These projects were very simple and easy to learn. The
VEX Robotics Design System is a great system for strong,
durable robots and the ROBOTC integrated development
environment makes this platform viable for just about all
your robotic ideas. The new VEX IQ system is another very
easy and flexible system that gets rid of the somewhat
tedious nuts and bolts construction. The $249 list price
makes this system very attractive.
This article gives just a basic test for omnidirectional
drive systems. There are more advanced ways to control an
omnidirectional-based robot. For instance, there are videos
of mecanum robots moving in a direction while spinning.
While how to do this is beyond the scope of this article, it
makes a good exercise if you feel like challenging yourself.
Another challenge could be trying to implement dead
reckoning — especially with the integrated wheel encoders
in the new VEX IQ system.
All the robots constructed here used four wheel drive.
The same principles could be used to construct a robot with
three wheels. The motors would be positioned at the
corners of an equilateral triangle. The control algorithm
could be quite complicated as it will involve trig functions
which can be messy on some microcontrollers. SV
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this article. You can also discuss this topic at
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