Im using a potentiometer to control the speed of two generic 6-8V DC motors. The potentiometer input is scaled from 0-1023 to 0-255, I then use the analogWrite() function to write this value to the enable pins on my L293D motor controller.
Im sure this should control the speed but it doesn't, I have the code printing the value it sends to the enable pins and this is correct, but no speed increase, the motors either move at one speed or don't move at all. My enable pins are 12 and 13 on my Arduino Uno, previously 5 and 6 but I moved them to see if that was the problem.
Is there a problem with the PWM frequency maybe? I don't understand why it won't go faster and slower after days of troubleshooting.. The inputs are all set correctly, allowing both motors to move in the forward direction..
int Speed = analogRead(speedChange);
int SpeedMap = map(Speed,0,1023,0,255);
Its a long shot but does anyone know enough about PWM control on DC motors to think of any things I may be missing while trying to do this? Ill provide any info ASAP, thanks