Gardena water valve with Arduino Uno

gardena.ino

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 ) _) / (_/\ ) _)( (__   )(   )   /(  O )/    / / _/ /    \
(____)\____/(____)\___) (__) (__\_) \__/ \_)__)(____)\_/\_/

Project name: Gardena water timer controller using Arduino Uno
Project page: https://electronza.com/gardena-water-timer-controller-arduino-uno/
Description:  Gardena T14E, Arduino Uno, Ardumoto and some passive components
********************************************************************/

int pwm_a = 3;  //PWM control for motor outputs 1 and 2 is on digital pin 3
int dir_a = 12;  //direction control for motor outputs 1 and 2 is on digital pin 12

void setup()
{
  pinMode(pwm_a, OUTPUT);  //Set control pins to be outputs
  pinMode(dir_a, OUTPUT);  //Note that the PWM pin is used as a regular output pin
}

void loop()
{
  // turn on sequence
  digitalWrite(dir_a, LOW);  // set to turn on
  digitalWrite(pwm_a, HIGH); // apply pulse
  delay(500);
  digitalWrite(pwm_a, LOW); // turn off pulse

//wait for about 10 seconds
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);

// now turn it off

  // turn on sequence
  digitalWrite(dir_a, HIGH);  // set to turn off
  digitalWrite(pwm_a, HIGH); // apply pulse
  delay(150);
  digitalWrite(pwm_a, LOW); // turn off pulse

// again some delay

//wait for about 10 seconds
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
delay(1000);
}