MPLAB IDE(Integrated Development Environment)  is a software program that runs on a  PC It is used to develop applications for pic micro...

MQ5 gas sensor:  MQ5 gas sensor detects natural gas and LPG Mq sensor used to detect a gas very easy here you can use either analog pi...

Arduino IDE Arduino software is used to write code and upload it to the board quickly The open source arduino software(IDE) makes it easy...

Arduino code: #include <LiquidCrystal.h> #define gas_Pin 7 // initialize the library by associating any needed LCD interface p...

MQ4 gas sensor Arduino code: #include <LiquidCrystal.h> #define gas_Pin 7 // initialize the library by associating any needed LC...

MQ3 ALCOHOL SENSOR Arduino code: #include <LiquidCrystal.h> #define gas_Pin 7 // initialize the library by associating any ...

Arduino coding: #include<Keypad.h> const byte ROWS = 4; //four rows const byte COLS = 4; //four columns char keys[ROWS][COLS...