Engineering Asked by NMech on December 2, 2020
First of all, apologies if this is an Arduino question. IMHO, I felt that the questions is more about motors and their comparison.
I’m trying to build an RC toycar using mecanum wheels.
The vehicle will have a standard 4 wheel configuration:
So far, I’m planning to use an arduino mega for the communication and control
of the wheels.
In order to obtain the omnidirectional movement and rotation, I need 4 different motors (one for each wheel), to control the speed for each wheel.
I’ve sorted out communication with the remote control, and also figured out the relevant equations that determine the wheel speed based on the $v_x$, $v_y$ and $omega$ (rotation).
Now the only thing that remains is selecting the type of motors to use.
The main option I’m considering right now is using a stepper motor driver like A4988 with a NEMA 11 or 14.
The main benefits I see with this design its the following:
Possible disadvantages are:
However, I’d like to ask what other motor designs/configurations should I consider (e.g. BLDC’s, DC, servo with speed control). I would be very interested in a possible configuration and to its the relative benefits/drawbacks with respect to my baseline option with regard to the following parameters:
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