Keyestudio 4WD Bluetooth Multi-functional Car

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#include <LiquidCrystal_I2C.h> //including libraries of I2C-LCD1602 liquid crystal

#include <Wire.h> //including libraries of I2C

#include <IRremote.h> //including libraries of remote control

#define RECV_PIN 12 //pin 12 of IR remoter control receiver

IRrecv irrecv(RECV_PIN); //defining pin 12 of IR remoter control

decode_results results; //cache of decode of IR remoter control

#define IR_Go 0x00ff629d //going forward

#define IR_Back 0x00ffa857 //going backward

#define IR_Left 0x00ff22dd //turning left

#define IR_Right 0x00ffc23d //turning right

#define IR_Stop 0x00ff02fd //stop

#define IR_Servo_L 0x00ff6897 //motor turning left

#define IR_Servo_R 0x00ff9867 //motor turning right

#define IR_Speed_UP 0x00ffb04f //increasing speed

#define IR_Speed_DOWN 0x00ff30cf //decreasing speed

#define IR_XunJi_Mode 0x00ff18e7

#define IR_Self_Control 0x00ff7a85 //ultrasonic distance detecting

#define IR_IR_Control 0x00ff10ef

#define IR_Bluetooth_Control 0x00ff38c7

#define IR_ESC 0x00ff52ad //quitting from remote control

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#define SensorLeft 6 //sensor left pin of line tracking module

#define SensorMiddle 9 //sensor middle pin of line tracking module

#define SensorRight 11 //sensor right pin of line tracking module

unsigned char SL; //state of left sensor of line tracking module

Keyestudio 4WD Bluetooth Multi-functional Car - Page 133