Pulse width modulation is a great method of controlling the amount of power delivered to a dc motor without dissipating any wasted power.this tutorial demonstrates signal control through atmega32 using timer0 in fast pwm mode.voltage applied(Vout) on dc motor depends on duty cycle so by increasing(from 1 to 255) or dexreasing(255 to 1) duty cycle control over motor speed can be acheived.drived relation between Vout and duty cycle gives the fo
speed.control
