int CTS[7] = {A0, A1, A2, A3, A4, A5, A6};
#define pad 0
#define blue 2
#define green 3
#define red 4


uint32_t time1;
boolean flag = true;

void setup()  
{
  // Open serial communications and wait for port to open:

  for (int i=0; i<7; i++) pinMode(CTS[i], OUTPUT);
  for (int i=0; i<7; i++) digitalWrite(CTS[i], LOW);
  digitalWrite(CTS[pad], HIGH);
  Serial.begin(57600);
  // set the data rate for the SoftwareSerial port
  Serial1.begin(57600);
  time1 = millis();
  pinMode(green, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(red, OUTPUT);
  analogWrite(red, 0);
  analogWrite(green, 10);
  analogWrite(blue, 0);
}


void loop() // run over and over
{
  if (Serial.available())
    {
      Serial1.write(Serial.read());
      if (flag)
      {
        digitalWrite(CTS[pad], LOW);
        delay(1);
        digitalWrite(CTS[pad], HIGH);
        flag = false;
      }
      time1 = millis();
    }
  if (Serial1.available())
    Serial.write(Serial1.read());
  if ((millis()- time1)>=1000) flag = true;
}