Fermion: MEMS Odor Smell Gas Detection Sensor
Fermion MEMS Odor / Smell Gas Sensor
Overview
Compact odor (smell) detection sensor
Uses advanced MEMS (Microelectromechanical Systems) technology
Designed for qualitative gas detection (e-nose applications)
Compatible with Arduino, ESP32, Raspberry Pi
Working Principle
Gas molecules interact with MEMS sensing element
Causes change in electrical properties (resistance/conductivity)
Internal circuit converts change analog voltage output
Microcontroller interprets signal detects odor presence/intensity
Works like an electronic nose (e-nose) for smell detection
Key Specifications
Current Consumption: < 20 mA
Detection Range: 0.5 50 ppm
Output Type: Analog voltage
Operating Temperature: -10C to 50C
Humidity Range: 15% 90% RH
Size: ~13 13 2.5 mm
Lifespan: 5 years
5V
Module Components
MEMS gas sensing chip
Signal conditioning circuit
Analog output pin
Compact breakout board
Features
Ultra-compact size (very small footprint)
Low power consumption (<20mA)
High sensitivity with fast response & recovery
Supports detection of multiple odor-related gases
Long lifespan and stable performance
Detectable Gases / Odors
Hydrogen Sulfide (H'S)
Ethanol (EtOH)
Acetone
VOCs (volatile organic compounds)
General odor gases
Can detect a wide range but gives qualitative results (not exact ppm accuracy)
Applications
Electronic nose (e-nose) systems
Food freshness / spoilage detection
Breath analysis & health monitoring
Air quality monitoring
Smart home & safety systems
Usage Tips
Remove protective film before use
Preheat sensor (~24 hrs if unused for long time)
Avoid silicone vapors and chemicals
Use in clean, stable environments
Advantages
Very small and energy-efficient
Fast response compared to traditional gas sensors
Easy analog interface
Suitable for portable & IoT devices
Limitations
Provides qualitative (relative) measurement only
Not suitable for safety-critical gas detection
Sensitive to environmental conditions (humidity, temperature)
Requires calibration for better interpretation
Summary
A compact MEMS-based odor detection sensor
Works like an electronic nose
Outputs analog signal based on smell intensity
Ideal for environments, and experimental projects