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How to detect Smoke and Inflammable Gases using MQ-4 Gas Sensor interfacing with Arduino Uno

Name: How to detect Smoke and Inflammable Gases using MQ-4 Gas Sensor interfacing with Arduino Uno
Brand: Robokreeda
SKU: 3417
Price: 1591.82 INR
Availability: InStock
Rating: 5 (1 reviews)

Category: Arduino Compatible Kits

MQ4 sensor can sense methane / natural gas easily with a range sensitivity from 300 to 10000ppm, costs are very low, and can be easily plugged with Arduino boards.

MQ4 GAS SENSOR – METHANE NATURAL GAS MONITOR WITH MQ3 / MQ4 SENSORS

HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download :https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

MQ-4 GAS Sensor Module

Detection Range: 300 ~ 10000ppm
Characteristic Gas: 5000ppm methane
Sensitivity: R in air/R in typical gas≥5
Resistance of Sensitive Material: 1KΩ～20KΩ in 5000ppm methane
Response Time: ≤10s
Recovery Time: ≤30s
Heating Resistance: 31Ω±3Ω
Heating Current: ≤180mA
Heating Power: ≤900mW
Heating Voltage: 5.0V±0.2V
Measuring Voltage: ≤24V
High sensitivity to CH4，Natural gas
Small sensitivity to alcohol, smoke
Fast response
Stable and long life
Simple drive circuit

Working condition of MQ-4:

Environment Temperature: -20℃～+55℃
Humidity: ≤95%RH
Environment Oxygen Content: 21%

Storage condition of MQ-4:

Temperature: -20℃～+70℃
Humidity: ≤70%RH

OLED DISPLAY

Voltage: 3V ~ 5V DC. Working Temperature: -30 ℃ ~ 70 ℃
Ultra-low power consumption: full screen lit 0.08W
Supports many control chip: Fully compatible with Arduino, 51 Series, MSP430 Series, and STM32 / 2, CSR IC, etc.
High resolution: 128 * 64. Viewing angle:> 160 °

PIN DESCRIPTION

MQ-4 GAS Sensor Module

1 pin VCC 5v
1 pin GND
1 pin DO (digital output) TTL digital 0 and 1 (0.1 and 5V)
1 pin AO (analog output) 0.1-0 .3 V (clean), the highest concentration of voltage around 4V

Led

CIRCUIT CONNECTION

Connect led with one ground and other to pin no 10 of Arduino Uno
Connect Buzzer’s one point to gnd and another pin to pin no 9 of Arduino uno.
Connect mq-4 gas sensor’s gnd to gnd, vcc to vcc, analog output to pin a0 of arduino Uno.
Now connect the oled vcc to vcc, gnd to gnd , scl to arduino scl pin no 16 and sda to Arduino pin no 17 sda.
Now upload the code.

CODE

Click to see the code:

https://docs.google.com/document/d/e/2PACX-1vRVGmmDw1epvdrcL-TEIy9gcREcHmSyc4DJCbBUFa7b4CjsC4kannKNjNHaIG87EmN0mFoBAyHaxxzA/pub

WORKING

Upload the code and see the data on OLED Display measured by MQ-4 Gas Sensor.

Battery operated	Yes , 1 nos 9V battery included

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