Speed Control of DC motor using ARM
DC Shunt Motor is the constant speed motor whose speed is directly proportional to the applied voltage. Resistor(Starter ) based speed control technique has few limitations like excess power dissipation. In the process of controlling speed excess voltage is dropped across resistor which is not the efficient way of doing it. Alternate way to control speed of DC motor is by using Pulse width Modulation. Systick can be used to generate PWM. Bi-directional speed control of DC Motor is as shown.
Bi directional speed control of DC motor is possible based on state of GPIO 1, GPIO 2
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