Help with building your Speeduino, installing it, getting it to run etc.
By ndemaio
#49629
Hello,

I have a MAF sensor

https://shop.advanceautoparts.com/p/del ... lsrc=aw.ds

And an arduino uno. I am doing this for research purposes and not related to a car. But I need to measure the mass flow rate of a stream of air through a duct that this MAF will fit between.

Can anyone help me identify some arduino code that can assist me in this.
User avatar
By pazi88
#49631
Not sure about that particular maf, but usually maf sensors have 0-5 output relative to mass air flow. So ypu just need to measure that voltage with arduino and do calculation to mass air flow. For that, you need the transfer curve specific for your maf sensor.
By ndemaio
#49633
It outputs a pwm signal between 0-5, so the frequency of the pulses would be the flow rate. This is why I’m having trouble. Also know nothing about arduino
By ndemaio
#49634
Here is the signal I get
Attachments
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By theonewithin
#49635
Best to hit up an Arduino group.

Speeduino doesn't have any MAF support so any help would be completely unrelated.
By ndemaio
#49637
theonewithin wrote: Tue Apr 13, 2021 9:01 pm Best to hit up an Arduino group.

Speeduino doesn't have any MAF support so any help would be completely unrelated.

Ahh okay. Didn’t know that. Thanks
User avatar
By pazi88
#49643
Yeah no MAF support in speeduino. But because that is MAF with PWM output, you could look into flex fuel sensor reading in speeduino FW to get clues how to read that MAF PWM signal using Arduino.

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