User avatar
By kabron
#44717
Measuring Range of the sensor declared as 0-5ppm.
That corresponds to 0 - 0.005 promile.
It means that will constantly overscaled at any reasonable
ammount of alcohol.
And indeed it overscaled after 0.33L of beer.
The question is: what is practtical benefit of this device?
#44730
cd Raspberry-Pi-Gas-Sensor-MQ
sudo python example.py
The calibration is started automatically during initialization. It is important that the sensor is in good / fresh air as smoke / other gases would falsify the calibration. The process takes a few seconds, but the gas content can already be measured thereafter (see video). Some sensors are quite hot, but this should not be a cause for concern.
Last edited by rafaelmatthews12.6 on Thu May 13, 2021 4:02 am, edited 1 time in total.
By 347945801
#44733
This sensor can measure alcohol in a volatile state, which is generally present in the breath of people who drink alcohol, and can be used to detect drunk driving.
User avatar
By kabron
#44737
347945801 wrote:
Wed May 12, 2021 7:09 am
This sensor can measure alcohol in a volatile state, which is generally present in the breath of people who drink alcohol, and can be used to detect drunk driving.
NO it could not! It has very narrow sensing range, much below any real concentrations