MECH15/_08_photoresistance.ino

/***********************************************************
File name: 08_photoresistance.ino
Description: We measure the light intensity of information with
             photosensitive resistance, and displayed on the
             LCD1602.
Website: www.adeept.com
E-mail: support@adeept.com
Author: Tom
Date: 2015/05/02 
***********************************************************/

#include <LiquidCrystal.h>

char array1[]="   Adeept test   ";  //the string to print on the LCD

char array2[]="   DATA: 0000    ";  //the string to print on the LCD

int tim = 50;                       //the value of delay time

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(4, 6, 10, 11, 12, 13);
int photoresistorPin = 0;           // potentiometer wiper (middle terminal) connected to analog pin 3

void setup()
{
  lcd.begin(16, 2);    // set up the LCD's number of columns and rows: 
  lcd.clear();         //Clears the LCD screen and positions the cursor in the upper-left corner 
  lcd.setCursor(0,0);  // set the cursor to column 15, line 0
  for (int positionCounter1 = 0; positionCounter1 < 16; positionCounter1++)
  {
      lcd.print(array1[positionCounter1]);  // Print a message to the LCD.
      delay(tim);     //wait for 250 microseconds
  }
}

void loop() 
{
  array2[9]=analogRead(photoresistorPin)/1000+0x30;   //Take one thousand - bit data 
  array2[10]=analogRead(photoresistorPin)/100%10+0x30;//Take one hundred - bit data
  array2[11]=analogRead(photoresistorPin)/10%10+0x30; //Take ten-bit data
  array2[12]=analogRead(photoresistorPin)%10+0x30;    //Take a bit of data
  lcd.setCursor(0,1);                                 // set the cursor to column 15, line 1
  for (int positionCounter3 = 0; positionCounter3 < 16; positionCounter3++)
  {
    lcd.print(array2[positionCounter3]);             // Print a message to the LCD.
    delay(tim);                                      //wait for 250 microseconds
  }
}