GAS Leakage+Smoke Detector Using Arduino + MQ2( or MQ9) + LCD SCREEN +I2C module + buzzer / Led

The Circuit uses a gaseous sensor device MQ2/MQ9 as an input device and processes it by using the Arduino uno in sending an output to the LED and Buzzer when a level of gas is detected and this level is displayed on the LCD Display
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Hardwares Needed:
Arduino UNO r3 - bit.ly/35WyYkJ
16X2 LCD Display - bit.ly/2T3LXfd
i2c Module - bit.ly/3cwZxzg
MQ2 Gas Sensor - bit.ly/2Wx2n1X
Buzzer - bit.ly/3dLbrWq
Led - bit.ly/2y4Q2so
Breadboard - bit.ly/3fKkJE5
9v power Adapter - bit.ly/3fLt0HL
Circuit Connection
LCD display to i2c display : simply connect LcD dispaly to i2c display module with parallel i2c to arduino
------------------------------------------
i2c to Arduino
VCC to 5V
GND to GND
SDA TO A4
SCL TO A5
------------------------------------------
Arduino to Gas sensor
GND to GND
VCC to 5V
A0 to A0
--------------------------------------------
BUZZER&LED TO ARDUINO
+VE TO I/O13
-VE TO GND
----------------------------------------------
Add i2c library to Arduino library
Source code:
drive.google.c...
CIRCUIT DIAGRAM:
drive.google.c...
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Wireless Gas Leakage Smoke Detector • How to Make Arduino Wi... ]]
El circuito utiliza un dispositivo sensor gaseoso MQ2 / MQ9 como dispositivo de entrada y lo procesa utilizando el Arduino uno para enviar una salida al LED y al zumbador cuando se detecta un nivel de gas y este nivel se muestra en la pantalla LCD
Hardware necesario
Arduino uno
16 * 2 pantalla lcd
Módulo de pantalla lcd I2C
Sensor de GAS -MQ9 / MQ2
Cable de conexión
Zumbador
LED
Conexión de circuito
Pantalla LCD a pantalla i2c: simplemente conecte LcD dispaly al módulo de pantalla i2c con i2c paralelo a arduino
i2c a Arduino
VCC a 5V
GND a GND
SDA A A4
SCL A A5
Sensor Arduino a Gas
GND a GND
VCC a 5V
A0 a A0
ZUMBADOR Y LED A ARDUINO
+ VE A I / O13
-VE A GND
Añadir biblioteca i2c a la biblioteca Arduino
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Wireless Gas Leakage Smoke Detector • How to Make Arduino Wi... ]]

[@pranaveshe2966]

Need a circuit diagram

[@josharduino3241]

CIRCUIT DIAGRAM:
drive.google.com/open?id=1GmwVwxlyvHNheNcJ3neVKRihjTlnUhEx

[@user-np2zf4xe4f]

Hello what kind of jumping wire did you used?

[@humbertodejesusmartinezdua8498]

exit status 1
'class LiquidCrystal_I2C' has no member named 'init'

marca error ayuda:(

[@rutujachavan5631]

lcd is not showing readings

[@zinhledlamini3265]

I AM LOOKING FOR THE CODE PART WHERE IS IT?

[@avimpecknp]

How you derive the calculation to convert values into percentage

[@satyanarayan611]

LiquidCrystal_I2C.h no such or directory . kindly help . making project for my students.

[@toandang4015]

Làm ơn giúp tôi, sau khi nạp code mạch của tôi báo động liên tục ko về trạng thái bình thường

[@udanthapabasara]

THANX BRO

[@jepoy1754]

Hi, i am having a compiling error...
exit status 1
'int LiquidCrystal_I2C::init()' is private within this context

[@lugojulio1856]

I have the same problem

[@devanshsinghparmar]

use "begin" instead of "init"

[@mahir_uka]

Bro I need code

[@junaidi4562]

may I have the fritzing sequence file ?

[@double_tech]

i dont have a file for running a code

[@nursuhadahbintimohdsuhaimi220]

i want all this file coding help me please ...

[@priyanshukrprasadcreative2004]

I need code

[@mrflook-iw1nv]

Running the program doesn't help as well.

[@josharduino3241]

Kindly specify the problem you encountered with the Arduino code.

[@alidaabeldelacruz8052]

Can't upload the code to my arduino

[@josharduino3241]

which error message did you receive?

[@alidaabeldelacruz8052]

@@josharduino3241 exit status 1

[@akashakash4764]

Need of clear program to run ardino

[@josharduino3241]

Source code:
drive.google.com/open?id=1-DfDz80EjMBmFm5RRAR-o41-fcNB6vbQ

[@pranaveshe2966]

We need circuit diagram

[@damiakhalisa6951]

Does it detect smoke?

[@josharduino3241]

Yes it does

[@damiakhalisa6951]

@@josharduino3241 I have made this project but it only detect gas. What should I do to ensure it can also detect smoke?

[@josharduino3241]

@@damiakhalisa6951 MQ2 /MQ9 Gas sensor works on 5V DC and draws around 800mW. It can detect LPG, Smoke, Alcohol, Propane, Hydrogen, Methane and Carbon Monoxide concentrations anywhere from 200 to 10000ppm.
But incase you have a sensitivity problem,
You can calibrate your Sensor by holding the gas sensor near smoke/gas you want to detect and keep turning the potentiometer until the Red LED on the module starts glowing. Turn the screw clockwise to increase sensitivity or anticlockwise to decrease sensitivity.

[@damiakhalisa6951]

@@josharduino3241 Alright sir, thank you 😊👍🏻

[@akashajay9683]

Corect code plz

[@josharduino3241]

That’s the correct code…
Kindly specify the error you got.

[@shuvoranjondeb]

Help please

[@josharduino3241]

hello Ranjon, how may i help you?

[@josharduino3241]

hello Ranjon, how may i help you?

[@junaidi4562]

Source code eror ini LCD 😭

[@josharduino3241]

what was the error message?

[@junaidi4562]

@@josharduino3241 file header lcd not write

[@gsarduino1609]

@@josharduino3241 Bibliothèque non valide trouvée dans C:\Program Files (x86)\Arduino\libraries\Ultrasonic-HC-SR04-master : aucun fichier d'en-tête (.h) trouvé dans C:\Program Files (x86)\Arduino\libraries\Ultrasonic-HC-SR04-master

[@user-np2zf4xe4f]

Hello what kind of jumping wire did you used?