Hi! I’m using a MQ303A alcohol sensor on a project but in order to have a good reading, my chip needs to know what’s the range it needs to fit in. I know that the sensor sends a voltage, but nowhere on the specsheets does it give the range…
Does someone have this information please?
Thanks and have a nice day!
FrankP
I’ve seen that data sheet but I don’t see the information that I’m looking for… can you point me in the right direction?
Thx!
On page 2 you can see the callibration graphic and a sample circuit. The resulting voltage across the sensor will depend on your testing voltage. On datasheet 3V is used.