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  • Co2 Sensor

    EEnano

    Member

    Updated: Oct 26, 2024
    Views: 1.5K
    hi everyone

    i'm working on a project about Co2 sensor but one of the problem i'm running into is finding a 3.3v sensor that have specification of :0ppm-10000ppm, operating temperature of: -25- +25. i found one before before but the operating voltage was 5v. does anyone out there have some knowledge in this?

    Thanks
    EEnano
    0
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Replies

  • Rupam Das

    Member • Oct 6, 2012

    EEnano
    hi everyone

    i'm working on a project about Co2 sensor but one of the problem i'm running into is finding a 3.3v sensor that have specification of :0ppm-10000ppm, operating temperature of: -25- +25. i found one before before but the operating voltage was 5v. does anyone out there have some knowledge in this?

    Thanks
    EEnano
    [Sensor op Vin]
    |
    R1
    |
    |___________[3.3 v range Vout]
    |
    |
    R2
    |
    |
    GND
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  • Rupam Das

    Member • Oct 6, 2012

    If you are in final year, I will assume you know the formula for Calculating R1 and R2 of a voltage divider circuit.

    Vout=Vin*R2/(R1+R2);

    470, and a potentiometer will do.
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  • Ramani Aswath

    Member • Oct 6, 2012

    EEnano
    finding a 3.3v sensor that have specification of :0ppm-10000ppm, operating temperature of: -25- +25.
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