Toxic Gas Sensor

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Artificial nose? Helping industry trace their leaks? MRTG for toxic gas?

Welcome to the wonderful world of post-chemistry.


  • Carbon Monoxide (CO), Hydrogen (H)
  • Hydrogen (H), Ethanol (C2H6O), Iso-butane (CH3CH(CH3)2), Carbon Monoxide (CO), Methane (CH4)
  • Toluene (C7H8), Hydrogen Sulfide (H2S), Ethanol (C2H6O), Ammonia (NH3), Hydrogen (H)
  • Ethanol (C2H6O), Hydrogen (H), Iso-butane (CH3CH(CH3)2), Carbon Monoxide (CO), Methane (CH4)



  • Sensors: cheap sensors made by a company called Figaro - one TGS2600 + one TGS2602. Available at Radiospares and Diltronic (St Germain en Laye)
  • Those sensors are already used by (that's how we found them)
  • Based on a Fonera which could connect to the /tmp/lab wireless network and directly post results on the internet
  • Using SPI with Fonera:
  • ADC: LTC2496 (I have an evaluation kit)
  • My LTC2496 driver for Linux:
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