Arduino Code and Video for PowerShell command line Control Relay via USB

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Arduino Code to Control relay via USB from command line using Windows PowerShell

1. Download PowerShell Scripts

 /*
 * This Arduino Code is to read and decode serial monitor
 * code sent from USB to UART or USB to UART FTDI chip
 * command sent from windows PowerShell or other systems commands.
 * When the code is detected and matched with the present codes
 * for example 6 is to Turn relay ON and 2 to turn OFF the relay
 * in turn will turn ON AC bulb.
 Watch the video for this code: https://youtu.be/HzLCkzX5q3w
 * 
 */
// Written by Ahmad S. Robojax at 19:11 on Saturday April 01, 2018
byte RX_Value = 0;        // stores received byte

#define relay 8 // pin 8 for relay

int comON = 6;//code to turn ON the light
int comOFF = 2;// code to turn OFF the light

void setup() {
  // Robojax code for USB command to Relay
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  pinMode(relay,OUTPUT);// define pin 8 as output
  digitalWrite(relay,HIGH);// turn the relay OFF
  Serial.println("Robojax USB Command");
}

void loop() { // run over and over
  // Robojax code for USB command to Relay
  if (Serial.available()) {


    RX_Value = Serial.read();
    if(Serial.read() == comON)
    {
          digitalWrite(relay,LOW);// turn the relay ON
          Serial.print("Code to Turn ON:");
          Serial.println(RX_Value);// print the received command
    }
    if(RX_Value == comOFF)
    {
         digitalWrite(relay,HIGH);// turn the relay OFF
         Serial.print("Code to Turn OFF:");
         Serial.println(RX_Value); // print the received command     
    }

  }
}// loop