Printing the output data of a turbidity sensor with Arduino UNO - arduino-uno

Question

I am reading the output in voltage of a turbidity sensor : https://www.dfrobot.com/product-1394.html?tracking=5b603d54411d5 with an Arduino UNO. I want to print the value of volts outage and its NTU (turbidity units) on an LCD screen ADM1602U Sparkfun.
I cant seem to print the dtata correctly on the lCD, it opens and lights up (so I think the wiring is ok) but no data appear.
Here is the code I am using:
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);
int sensorPin = A0;
int val = 0;
float volt;
float ntu;
void setup()
{
Serial.begin(9600);
lcd.init();
// Turn on the blacklight and print a message.
lcd.backlight();
}
void loop()
{
volt = ((float)analogRead(sensorPin)/1023)*5;
ntu = -1120.4*square(volt)+5742.3*volt-4353.8;
val = analogRead(volt);
Serial.println(volt);
lcd.clear();
lcd.setCursor(0,0);
lcd.print(volt);
lcd.print(" V");
lcd.setCursor(0,1);
lcd.print(ntu);
lcd.print(" NTU");
delay(10);
}
float round_to_dp( float in_value, int decimal_place )
{
float multiplier = powf( 10.0f, decimal_place );
in_value = roundf( in_value * multiplier ) / multiplier;
return in_value;
}
I used an analogread just to see if I was getting correct voltage values for the sensor and I am.
Thanks

Answer 1

Ok so I found the answer, the libary used was not appropriate to print on a 16x2 LCD display. The following code worked FYI:
#include <Wire.h>
#include <SoftwareSerial.h>
// Set the LCD address to 0x27 for a 16 chars and 2 line display
SoftwareSerial LCD(10, 11); // Arduino SS_RX = pin 10 (unused), Arduino SS_TX = pin 11
int sensorPin = A0;
float volt;
float ntu;
void setup()
{
Serial.begin(9600);
LCD.begin(9600); // set up serial port for 9600 baud
delay(500); // wait for display to boot
}
void loop()
{
volt = ((float)analogRead(sensorPin)/1023)*5;
ntu = -1120.4*square(volt)+5742.3*volt-4352.9;
Serial.println(volt);
// move cursor to beginning of first line
LCD.write(254);
LCD.write(128);
// clear display by sending spaces
LCD.write(" ");
LCD.write(" ");
// move cursor to beginning of first line
LCD.write(254);
LCD.write(128);
LCD.print(volt);
LCD.write(" V");
LCD.write(254);
LCD.write(192);
LCD.print(ntu);
LCD.write(" NTU");
delay(1000);
}