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 - [ Ссылка ]
16X2 LCD Display - [ Ссылка ]
i2c Module - [ Ссылка ]
MQ2 Gas Sensor - [ Ссылка ]
Buzzer - [ Ссылка ]

Led - [ Ссылка ]
Breadboard - [ Ссылка ]
9v power Adapter - [ Ссылка ]





 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:
[ Ссылка ]

CIRCUIT DIAGRAM:
[ Ссылка ]

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 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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