---

int ena = 5;
int in1 = 4;
int in2 = 2;
void setup() {
   pinMode(ena, OUTPUT);
   pinMode(in1, OUTPUT);
   pinMode(in2, OUTPUT);
   
}
void loop(){
  analogWrite(ena, 255);
  digitalWrite(in1, HIGH);
  digitalWrite(in2, LOW);
  delay(2000);
}