So, I was using the L298 to control motor speed. I used PIN 9 on my arduino to vary speed using a PWM signal. At full duty cycle 255 I read ~12V on the O/P side.
Then I connected the same 'PWM input pin' of the L298 board to my 3.3V pin on the arduino. This time, instead of varying the voltage proportionately, the L298 still output full voltage.
I'm new to this, does the L298 work purely on switching signal alone ?, I ask this since I wanted to control motor speed using a digital POT in the input side of the L298. I'm doing this to avoid any form of switching and to get a maximum analog type voltage output. If it only uses PWM switching, is there a way around this?, to vary voltage other than using a PWM signal ?