MQ 7 Gas Sensor for Arduino/Raspberry Pi
₹109.00
Estimated delivery:1 - 3 days
MQ 7 Gas Sensor for Arduino/Raspberry Pi
The MQ 7 Gas Sensor for Arduino/Raspberry Pi is a reliable gas detection module ideal for Arduino and Raspberry Pi projects. It detects various gases and provides both analog and digital outputs for easy integration.
Key Features
- High sensitivity to target gases
- Dual analog and digital output
- Adjustable sensitivity via potentiometer
- Wide detection range
- Fast response time
- Compatible with 5V logic
Technical Specifications
- Model: MQ
- Operating Voltage: 5V DC
- Output: Analog + Digital
- Preheat Time: 20-24 hours
- Detection Range: Varies by gas type
- Operating Temp: -10°C to +50°C
Pinout
- VCC: 5V Power
- GND: Ground
- A0: Analog Output
- D0: Digital Output (TTL)
Working Principle
The sensor detects gas concentration through a chemical reaction in the sensing layer. The resistance changes proportionally to gas presence, producing a measurable output voltage.
Applications
- Gas leak detection systems
- Air quality monitors
- Industrial safety systems
- Home automation
- Environmental monitoring
Wiring Guide
- Connect VCC to 5V
- Connect GND to Ground
- Connect A0 to analog pin
- Allow preheat before calibration
Package Includes
- 1 × MQ 7 Gas Sensor for Arduino/Raspberry Pi
Important Notes
- Requires preheating for accurate readings
- Calibrate in known clean air
- Sensor life decreases with exposure
Compatibility
- Arduino Uno / Nano / Mega
- ESP8266 / ESP32
- Raspberry Pi (with ADC)
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