Odometry for 4 wheel robot.

[roontoon]

I am hooking up a 4 wheel robot and my question is what to do with the addition to odometer sensors? Each motor has a sensor so do I run both right hand motor sensors in parallel? Or do I just use the front just like a two wheel robot. Thanks.

 

[Fürst Ruprecht]

Brush motor or brushless?
Bobcat (fixed wheels) or car (steering wheels)?

 

[AlexanderG]

I would try to use just two wheel sensors (one left and one right), it should work... The speed control will only control one motor (the one where it gets the feedback) for each side and the other motors will do more or less the same as the controlled one...

 

[roontoon]

Brush motor or brushless?
Bobcat (fixed wheels) or car (steering wheels)?

Brushed and bobcat style.

 

[Fürst Ruprecht]

then you can work with two signals and use the standard board solution. The motors are preferably connected in series. This reduces the spinning of the individual wheels and you only need 2 motor drivers. If you need more power on the drive wheels, then you'll probably need to use four motor drivers. This then becomes a bit more complicated since you can only operate the motor driver inputs in parallel. At the outputs you can then only evaluate two motor drivers.