Motors
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Overview: DC Motor vs Stepper Motor vs Servo Motor
DC Motors
Fast, continuous rotation motors – Used for anything that needs to spin at a high RPM e.g. car wheels, fans etc.
Servo Motors
Fast, high torque, accurate rotation within a limited angle – Generally a high performance alternative to stepper motors, but more complicated setup with PWM tuning. Suited for robotic arms/legs or rudder control etc.
Stepper Motors
Slow, precise rotation, easy set up & control – Advantage over servo motors in positional control. Where servos require a feedback mechanism and support circuitry to drive positioning, a stepper motor has positional control via its nature of rotation by fractional increments. Suited for 3D printers and similar devices where position is fundamental.