 #define LCD_DB6 D3
 #define LCD_DB7 D4
 
+#define LCD_BL_R A0
+#define LCD_BL_G A2
+#define LCD_BL_B A1
+
 #define LED_PIN D7
 #define MAX_CARDS 1000
 

    card = cards[i];
    if (card.rfid == code) {
      lcd.print(card.greeting);
      delay(3000);
      resetLCD();
      return;

  lcd.print("SENTRY");
  lcd.setCursor(0, 1);
  lcd.print("  online");

  digitalWrite(LCD_BL_R, HIGH);
  digitalWrite(LCD_BL_G, HIGH);
  digitalWrite(LCD_BL_B, LOW);
}

// Accept data in tab delineated CSV format, where each row is:
