motortest.ino

void setup() {
  pinMode(16, OUTPUT);
  pinMode(17, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(19, OUTPUT);
}
void loop() {
  digitalWrite(16, 1);
  digitalWrite(17, 0);
  digitalWrite(18, 1);
  digitalWrite(19, 0);
  delay(3000);
  digitalWrite(16, 0);
  digitalWrite(17, 1);
  digitalWrite(18, 0);
  digitalWrite(19, 1);
  delay(3000);
}