Electronics_Projects_2019/PHSensor/code/BasicPHSensor/BasicPHSensor.ino

#include "Nokia_5110.h"

//https://github.com/baghayi/Nokia_5110
//MIT license

//These have been slightly edited from default (normal is 2,3,4,5,6)

#define RST 3
#define CE 4
#define DC 5
#define DIN 6
#define CLK 7

Nokia_5110 lcd = Nokia_5110(RST, CE, DC, DIN, CLK);

#define PHSENSOR A3

//uno is 10 bit adc
uint16_t phVal_u16 = 0;
float phFloat = 0;

void setup() {
  
    Serial.begin(9600);
    /**
     * Note: if instead of text being shown on the display, all the segments are on, you may need to decrease contrast value.
     */
    lcd.setContrast(28); // 60 is the default value set by the driver
    
    //lcd.print("Please Wait ...");
    lcd.setCursor(15,1);
    lcd.print("Starting...");
    delay(800);
    lcd.clear();

    //lcd.print("Hi there");
    //lcd.println(":D");

    //lcd.setCursor(0, 5);
    //lcd.println("1 2 3 ...");
}

void loop() {
  lcd.clear();
  phVal_u16 = analogRead(PHSENSOR);
  phFloat = phVal_u16 * 0.013672;
  lcd.setCursor(15,1);
  lcd.println("Raw:");
  lcd.setCursor(45,2);
  lcd.print(phVal_u16);
  lcd.setCursor(15,3);
  lcd.println("PH #:");
  lcd.setCursor(45,4);
  lcd.print(phFloat);
  //Serial.println(phVal_u16);
  delay(1000);
  
  }