Keyestudio Smart Little Turtle Robot V3 Manual page 133

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void setup()
{
pinMode(ML_Ctrl,
output
pinMode(ML_PWM,
output
pinMode(MR_Ctrl,
output
pinMode(MR_PWM,
output
}
void loop()
{
//front
digitalWrite(ML_Ctrl,LOW);//set the direction control pin of A motor to
LOW
analogWrite(ML_PWM,200);//set the PWM control speed of A motor to
200
digitalWrite(MR_Ctrl,LOW);//set the direction control pin of B motor to
LOW
analogWrite(MR_PWM,200);//
OUTPUT);//set direction control pin of A motor to
OUTPUT);//set PWM control pin of A motor to
OUTPUT);//set direction control pin of B motor to
OUTPUT);//set PWM control pin of B motor to
set the PWM control speed of B motor to
133