     //lcd setup
     lcdSetup();
 
-    // for current sensor
-    analogReference(INTERNAL);
     pinMode(RELAY_PIN, OUTPUT);
     digitalWrite(RELAY_PIN, HIGH);
     Serial.begin(9600);


            // current sensor
        case 86:
            analogReference(INTERNAL);
            send_int(analogRead(CURRENT_SENSOR_PIN));
            break;


                digitalWrite(MAX7219_CS, HIGH);
                break;
        case 88: 
                send_int(analogRead(PHOTO_RESISTOR));
                break;

