I’m new to brushless motors and my question is rather general. I purchase the following:
- 227:1 Metal Gearmotor 25Dx56L mm MP 12V with 48 CPR Encoder (Pololu item #: 3245)
- Pololu Dual MC33926 Motor Driver for Raspberry Pi (Pololu item #: 2756)
In looking at the python motor driver library (dual-mc33926-motor-driver-rpi.py) it states that motor speed parameter varies from -480 to 480 and that 0 = Break. Where MAXSPEED = 480.
Motor/Gear Specification: Free-run speed @ 12V: 33 rpm
My question: Under a zero load situation, can I assume the motor shaft rotational speed changes linearly from 0 to 33 RPM for a corresponding driver speed change from 0 to 480? Or is it non-linear?