Comments on: How to Use the MQ-3 Alcohol Sensor

By: ihaiz

ihaiz — Mon, 10 May 2021 03:56:46 +0000

Hi i would like to ask if there is a mistake for the equation F(x)=2.5x^-0.699 as I the equation I got is F(x)=0.527x^-0.699

By: zhang

zhang — Sun, 21 Feb 2021 13:15:53 +0000

i think you are talking about BrAC(breath alcohol concentration) NOT BAC(blood alcohol concentration)

By: Francesco

Francesco — Sat, 23 Jan 2021 14:50:38 +0000

Sorry, R0 for me is 100 (average). And the value of R2 resistor is 1000. It.s possibile?
thanks

By: sravya

sravya — Fri, 06 Dec 2019 05:28:14 +0000

I interfaced aurdino with mq135 sensor, I got the output displaying in serial monitor.I Want to push these values to p10 led board using Arduino throw hub12 port How is it possible...?

By: Theerapong Santhaveesuk

Theerapong Santhaveesuk — Fri, 06 Sep 2019 12:56:01 +0000

In reply to Theerapong Santhaveesuk. I'm wrong , you're correct.

By: Theerapong Santhaveesuk

Theerapong Santhaveesuk — Fri, 06 Sep 2019 12:54:31 +0000

This equation might be wrong.

RS_gas = ((5.0 * R2)/sensor_volt) - R2;

It should be + R2 not - R2.

By: sacharidis

sacharidis — Fri, 21 Dec 2018 10:34:28 +0000

How do you have the curve in the introduction and what is his formula ?
And I don't understand the relation between mg/L and RS R0 ?
what is the unit of RS and R0 ?
Thank you

By: sandeepa hasaranga perera

sandeepa hasaranga perera — Sat, 22 Sep 2018 17:01:52 +0000

how you make this equation BAC = 0.1896*ratio^2 - 8.6178*ratio/10 + 1.0792

By: sandeepa hasaranga perera

sandeepa hasaranga perera — Sat, 22 Sep 2018 15:24:16 +0000

how you get this equation 0.1896*x^2 - 8.6178*x/10 + 1.0792