// LCD Custom Character Generator https://maxpromer.github.io/LCD-Character-Creator/
#include <LiquidCrystal_I2C.h>     // if you don´t have I2C version of the display, use LiquidCrystal.h library instead
#include <Wire.h>

LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display

int analogInput = A0;
int value = 0;

byte meter[8] = {
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B00000
};
byte maxmeter[8] = {
  B11111,
  B10001,
  B10001,
  B10001,
  B10001,
  B10001,
  B11111,
  B00000
};
 
void setup(){
  pinMode(analogInput, INPUT);
  lcd.begin(16, 2);
  lcd.createChar(0, maxmeter);
  lcd.createChar(1, meter);
  lcd.clear();
  Wire.begin(); 
  lcd.backlight();   
}

void loop(){
    value = analogRead(analogInput);
    barplot();
    maxbar();  
}

void barplot(){
    value = (value * 14) / 1023;	// Scale it to 14
    //lcd.clear();			// clear the old bars
    lcd.setCursor(0, 1);		// draw graph starting from 0,1
    lcd.print("S:");
    for (int i = 0; i < value; i++) {
    lcd.write(byte(1));}
    delay(100);
}

void maxbar(){
    lcd.setCursor(2, 1);		// draw graph starting from 0,1
    for (int i = 0; i < 14; i++) {
    lcd.write(byte(0));}
}