I can't control the speed of the motors, and I don't know why, the conections are alright because when I don't plugged the ENA and the ENB pins the motors do work. PLZ help me.
motor.ino (350 Bytes)
Whilst the motors may work in some situation a schematic of YOUR wiring may be useful even if hand drawn.
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You're trying to pwm pin 13.
int ENB = 13; // ENB conectada al pin 3 de Arduino
...
analogWrite(ENB,200);
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