I am experiment and learn.
Is making a major task with your help and the beach there and áhvað to go there to learn more and test me.
I am also practicing for Blynk app lcd 
It functions all I see value in Blynk app but need the correct value for psi.
using this code.
/*************************************************************
Blynk is a platform with iOS and Android apps to control
Arduino, Raspberry Pi and the likes over the Internet.
You can easily build graphic interfaces for all your
projects by simply dragging and dropping widgets.
Downloads, docs, tutorials: http://www.blynk.cc
Sketch generator: http://examples.blynk.cc
Blynk community: http://community.blynk.cc
Social networks: http://www.fb.com/blynkapp
http://twitter.com/blynk_app
Blynk library is licensed under MIT license
This example code is in public domain.
*************************************************************
Output any data on LCD widget!
App project setup:
LCD widget, switch to ADVANCED mode, select pin V1
*************************************************************/
/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial
#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>
#define W5100_CS 10
#define SDCARD_CS 4
//int sensorPin = A5; // select the input pin for the potentiometer
//int ledPin = V9; // select the pin for the LED
//int sensorValue = 0; // variable to store the value coming from the sensor
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "3295d2122335428a8a8877a04a64367b";
WidgetLED led1(V7);
int Pressure = A5;
int val = 0;
int val1 = 0;
int val2 = 0;
WidgetLCD lcd(V1);
void setup()
{
pinMode(SDCARD_CS, OUTPUT);
digitalWrite(SDCARD_CS, HIGH); // Deselect the SD card
Serial.begin(9600);
Blynk.begin(auth, IPAddress(192,168,10,3)); // For more options, see Boards_Ethernet/Arduino_Ethernet_Manual example
// declare the ledPin as an OUTPUT:
pinMode(Pressure, INPUT); // sets the analogue pin 1 as input
//lcd.clear(); //Use it to clear the LCD Widget
lcd.print(4, 0, sensorPin); // use: (position X: 0-15, position Y: 0-1, "Message you want to print")
lcd.print(4, 1, val);
// Please use timed events when LCD printintg in void loop to avoid sending too many commands
// It will cause a FLOOD Error, and connection will be dropped
}
BLYNK_READ(V6)//pressure reading
{
int val = analogRead(5);
val = map(val, 0, 1080, 0, 35);
Blynk.virtualWrite(6, val);
//GREEN LED
if (val > 30){//If val = greater than 100, LED turns green
Blynk.setProperty(V6, "color", "#ff0033");
led1.on();//LED On
} else {//If val = less than 30 LED turns off
Blynk.setProperty(V6, "color", "#33cc33");
led1.on();//LED On
}
}
void loop()
{
Serial.print(A5);
Blynk.run();
}