L298 Motor drive stalls when I use analogWrite

Other Hardware Motors, Mechanics, Power and CNC
1

Hi All!

Thanks for the awesone forum!
Via an other topic I discovered the L298 as a solution for my DC motor project.
I followed this article the get it running: https://hardwarefun.com/tutorials/controlling-speed-of-dc-motors-using-arduino

But now, when I use

analogWrite(motor2Ena, 255);

to enable the engine to run, it runs very slow (stalls often). While doing a digital write on the same pin lets the motor run very fast...

digitalWrite(motor2Ena, HIGH);

As I understood, analog 255 should be continuous on, so theoretically as fast as digital HIGH.

2

Seems very odd, like perhaps there are some other changes in the code. Please post the complete code.

E.g. are you sure you're using a PWM-enabled pin? And it is set as OUTPUT? What do you see with different values in the analogWrite() e.g 80, 120, 180 ?

Steve

3

Please post your full sketch, snippets like this aren't usually the cause of the problem.

4

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