const int ledPin1 = 25; //"BLUE"
const int ledPin2 = 26; //"GREEN"
const int ledPin3 = 27; //"RED"
//the pin that the LED is attached to - change this if you have a separate LED connected to another pin 
int incomingByte; // a variable to read incoming serial data into
void setup() {
  // put your setup code here, to run once:
// initialize serial communication: 
    Serial.begin(9600); 
    // initialize the LED pin as an output: 
    pinMode(ledPin1, OUTPUT); 
     pinMode(ledPin2, OUTPUT); 
      pinMode(ledPin3, OUTPUT); 
}

void loop() {
  // put your main code here, to run repeatedly:
  // see if there's incoming serial data: 
    if (Serial.available() > 0) { 

        // read the oldest byte in the serial buffer: 
        incomingByte = Serial.read();

        // if it's a capital H (ASCII 72), turn on the LED: 
        if (incomingByte == 'H') { 
            digitalWrite(ledPin1, HIGH); 
        } 
        
        // if it's an L (ASCII 76) turn off the LED:
        if (incomingByte == 'L') {
            digitalWrite(ledPin1, LOW); 
        } 
    } 
}// This code is to test the LED's ability to come on and off prior to color or gesture