How are you controlling them? Does this use an Arduino? If your just connecting a battery to a motor then yes it should not be a problem to switch the wires. If you want to be able to switch directions frequently I would buy this… https://www.sparkfun.com/products/9457. That way you can change direction without rewiring it each time.
Don't forget that an h-bridge is changing the polarity all the time anyway.... that's how it gets it to change direction in the first place. So all you need to do is set it up in hardware and software any way that makes sense to you, given the physical orientation of each motor, so that each side of the vehicle goes forward when you want it to and backwards when you want it to.
There is no problem changing polarity on a permanent magnet motor so yes, you could just swap the wires, but couldn't you just do it in your code? I presume the motors will be bi-directional in the application anyway?
So the speed and current draw and everything is the same in clock-wise and counterclockwise?
There may also be a slight difference in each motor as well, even if they are the same model. The main issue you might have is getting the robot to track straight over a long distance. You can calibrate this...
QuoteSo the speed and current draw and everything is the same in clock-wise and counterclockwise?In theory I guess, but I think I have a motor which runs more slowly in one direction. I never investigated further though....
is possible with arduino to control a big electric motor ex 200 watt dc?how can i study and understand the way to control this motor?is there a book?