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Driving a DC motor using PWM with AVR ATmega




This library is an update of the software PWM driver you can find here:
http://davidegironi.blogspot.it/2013/03/controlling-dc-motor-speed-and_6.html
For DC motor information please look at the above link.

This update implements also progressive start / stop features using hardware timer.

The PWM frequency have to be selected in the way that the switch frequency is much higher than the dynamics of the motor.
To avoid noise from the motor, the choosen PWM frequency is 20Khz.

So, with this one, you can drive up to 4 motors independently controlling:

 

Driving a DC motor using PWM with AVR ATmega

  • speed
  • direction
  • slow start / stop

Setup parameters are contained in dcmotorpwm.hThis library was developed on Eclipse, built with avr-gcc on Atmega8 @ 8MHz.

Code https://sourceforge.net/projects/davidegironi/files/avr-lib/avr_lib_dcmotorpwm_02.zip/download 

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