Jarsena
Posts: 3
Joined: Wed Apr 18, 2018 2:31 pm

Help with reading output from digital pressure sensor

Wed Apr 18, 2018 2:59 pm

I'm working on a project that involves creating a controller for a portable 12v air compressor. Ideally I would need to be able to turn the compressor on and off as well as read from the attached digital pressure sensor on the compressor.

As I've never tried connecting a Raspberry Pi to any sensor that was not designed for use with a Raspberry Pi I was wondering if this is something that might be doable?

wh7qq
Posts: 1085
Joined: Thu Oct 09, 2014 2:50 am

Re: Help with reading output from digital pressure sensor

Thu Apr 19, 2018 1:55 am

Without some info on the sensor and its output, there is no way to accurately answer. What sensor? What kind of data output does it have? There is probably a way to interface it with the RPi but no way to help without knowing what it is.

Jarsena
Posts: 3
Joined: Wed Apr 18, 2018 2:31 pm

Re: Help with reading output from digital pressure sensor

Thu Apr 19, 2018 2:37 am

Sorry I forgot to post the link! The air compressor I'm using is EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI
Any other hardware I'm waiting to purchase as I want to make sure what I want to do is indeed possible.

Paul Hutch
Posts: 287
Joined: Fri Aug 25, 2017 2:58 pm
Location: Blackstone River Valley, MA, USA

Re: Help with reading output from digital pressure sensor

Thu Apr 19, 2018 9:03 pm

There is likely no way to get digital data, or a useful analog signal, out of the built-in pressure gauge, at least not without breaking the automatic inflation pressure feature. So think about adding an additional pressure sensor for the Pi to read and choose one that is Pi friendly.

Jarsena
Posts: 3
Joined: Wed Apr 18, 2018 2:31 pm

Re: Help with reading output from digital pressure sensor

Sat Apr 21, 2018 1:59 am

Are there any Pics compatible sensors you might recommend for reading the internal air pressure of a PVC system?

Paul Hutch
Posts: 287
Joined: Fri Aug 25, 2017 2:58 pm
Location: Blackstone River Valley, MA, USA

Re: Help with reading output from digital pressure sensor

Tue Apr 24, 2018 12:04 am

I've never used any high pressure sensors with a RasPi but this forum thread recommends one that looks good.
viewtopic.php?t=183940#p1164072

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bensimmo
Posts: 3220
Joined: Sun Dec 28, 2014 3:02 pm
Location: East Yorkshire

Re: Help with reading output from digital pressure sensor

Tue Apr 24, 2018 7:02 am

You'll probably need to break the display area open too see what's in there.

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