microcontrollershub

// Connecting multiple 16*2 LCD Display to Arduino
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created on 18 June 2018

#include <LiquidCrystal.h>
LiquidCrystal lcd1(12, 11, 5, 4, 3, 2);
LiquidCrystal lcd2(12, 10, 5, 4, 3, 2);

// Change following variables as per your need
char * LargeText = "    Connecting 2 - 16*2 LCD with Arduino by microcontrollershub.       ";

microcontrollershub

// Scrolling display for 1602 LCD by Arduino
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created on 20 May 2018

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

// Change following variables as per your need
char * LargeText = "    Understanding code for scrolling text on 16*2 LCD Display.    ";

microcontrollershub

// Custom Character for 1602 LCD
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created on 9 May 2018
// Project link : https://youtu.be/Lkvu3Qug_PM

// Battery Full
byte BatteryF[8] = {
	0b00100,
	0b11111,
	0b11111,

microcontrollershub

// OPT3001 with Arduino (Lux meter)
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created 28 March 2018

#include <Wire.h>
void setup() 
{
  Serial.begin(9600);                            // Initialize serial communication at 9600
  Wire.begin();                                  // Initialize Arduino in I2C master.
  Wire.beginTransmission(0x44);                  // I2C address of OPT3001 = 0x44

microcontrollershub

// Arduino as IO - Extender (Slave_Code)
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created on 16 March 2018

#include <Wire.h>

void setup() 
{
  Wire.begin(0x40);                 // Initialize Arduino as slave with addres 0x40
  Wire.onReceive(receiveEvent);     // Register event

microcontrollershub

// Arduino as IO - Expander (Master_Code)
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created 16 March 2018

#include <Wire.h>

//------------ Serial commands ------------ 
String LED_1_ON_Command   = "LED 1 ON";        // I2C Command = 1
String LED_1_OFF_Command  = "LED 1 OFF";       // I2C Command = 2
String LED_2_ON_Command   = "LED 2 ON";        // I2C Command = 3

microcontrollershub

// Arduino as Slave Code
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created 08 March 2018

#include <Wire.h>

void setup() 
{
  Wire.begin(0x40);                 // Initialize Arduino as slave with addres 0x40
  Wire.onReceive(receiveEvent);     // Register event

microcontrollershub

// Arduino as Master Code
// by Varad Kulkarni <http://www.microcontrollershub.com>
// Created 08 March 2018

#include <Wire.h>

void setup() 
{
  Wire.begin();                     // Initialize Arduino as Master
}

microcontrollershub

//------------ BLE commands ------------ 
String ReceivedString_1 = "all red";
String ReceivedString_2 = "all green";
String ReceivedString_3 = "hold";
String ReceivedString_4 = "A C green";
String ReceivedString_5 = "B D green";
String ReceivedString_6 = "shut down";
String ReceivedString_7 = "test";
String ReceivedString_8 = "resume";
String ReceivedString_9 = "ok";

microcontrollershub

#include <IRremote.h>
#include <SoftwareSerial.h>
IRsend irsend;
SoftwareSerial BTSerial(10, 11); // RX | TX
String ReceivedString_1 = "turn on TV";
String ReceivedString_2 = "turn off TV";
String ReceivedString_3 = "mute";
String ReceivedString_4 = "unmute";
String ReceivedString_5 = "volume up";
String ReceivedString_6 = "volume down";