//DCmotor_driver_button.ino
//Based on program by Adrián Torres from Fab Lab León to control DC Motor
const int pushbuttonPin = D9;     // button      
const int motor1Pin = D4;      // H-bridge pin (in2) 
const int motor2Pin = D5;      // H-bridge pin (in1) 

void setup() {
    pinMode(pushbuttonPin, INPUT); 
    // set H-bridge pins as outputs:
    pinMode(motor1Pin, OUTPUT);
    pinMode(motor2Pin, OUTPUT);
  }
void loop() {
    // if button is pressed, (=LOW because the unpressed 'pulled up' state is HIGH)
  if (digitalRead(pushbuttonPin) == LOW) {
      analogWrite(motor1Pin, 127); // set pin 1 of the H-bridge to 50% using PWM
      analogWrite(motor2Pin, 0);   // set pin 2 of the H-bridge to low state
    }
     // if button is not pressed, the motor will stand still
  else
      {
      digitalWrite(motor1Pin, LOW);   // set pin 1 of the H-bridge low
      digitalWrite(motor2Pin, LOW);   // set pin 2 of the H-bridge low
      }
  }