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Original question:
MCF8316A: Motor not Spinning properly while PWM Generated from RPi
Hi,
I have successfully configured the motor and run it using I2C, now I want to control it with PWM, but nothing happens to the motor.
The settings in the GUI are as follows:
The input PWM signal is as shown in the figure below：3.3V PWM, DUTY=50%.
The hardware connection is shown in the figure below：
My question:
1. How does the PWM control method change the duty cycle? Given a constant duty cycle PWM signal, does rotating R4 change the duty cycle?
2.Is my connection method correct?
3.Why is the motor not spinning and what is wrong？
Thank you so much.
Regards,
Yunsheng Luo
Hi Yunsheng,
Jumper J1 is connected incorrectly. Configure J1 to EXT_SPEED by connecting the jumper to EXT as shown in below screenshot. Connect the PWM signal to the EXT_SPEED test point.
Regards,
Vishnu
