/* sketch of a mini train signal used with wooden toy trains
 * 2019 / otto@socialnerds.org
 * it's based off a standard signal of the austrian railways, uses
 * 1 red, 1 yellow and two green lights. it cycles though the four
 * sets it can show */

void setup() {
  // put your setup code here, to run once:
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  
}

void loop() {
  // put your main code here, to run repeatedly:
  clearLights();
  setHalt();
  delay(5000);
  clearLights();
  setDrive();
  delay(5000);
  clearLights();
  setDrive60();
  delay(5000);
  clearLights();
  setDrive40();
  delay(5000);
}

void clearLights()
{
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, HIGH);
  delay(1000);
}

void setHalt()
{
  digitalWrite(2, LOW);
}

void setDrive()
{
  digitalWrite(3, LOW);
}

void setDrive60()
{
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
}

void setDrive40()
{
  digitalWrite(3, LOW);
  digitalWrite(5, LOW);
}