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  • Boost Gauge

    I wanted to either find for purchase, or design and build, a boost gauge for my car, so rather than having a gauge sit somewhere on the dash, I could have the readout on my screen.

    I know Phidgets has a PSIG meter which you can use with an API setup. Does anyone else know of other solutions or somewhere to purchase something pre-made?

    I just need 0-20psi.

  • #2
    Why not use OBDII?
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    • #3
      You can't get boost pressure through ODBII. You would need a proprietary protocol that is car specific to be able to read boost.

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      • #4
        I think I'd personally go with the Phidgits option. You'd need to build yourself a front-end for it, but at least you wouldn't have to worry about drivers and all that.


        BTW, what kinda car? Being a gear-head, I'm just curious.
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        If it's not fun, you're not doing it right!

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        • #5
          2005 GTO CGM-M6

          Can't use OBDII for the reason he said above, plus, the car doesn't come stock with any boost devices

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          • #6
            you could use a regular boost gauge and have a shaft encoder on it to the PC. Or look for a pressure transducer. quite easy really but the former is easier to calibrate in a way.

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            • #7
              Originally posted by Scouse Monkey
              you could use a regular boost gauge and have a shaft encoder on it to the PC. Or look for a pressure transducer. quite easy really but the former is easier to calibrate in a way.

              the gauge wouldnt be able to turn a shaft encoder
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              • #8
                Take this article from Audi world and work from there http://www.audiworld.com/tech/elec94.shtml
                Also boost data via OBDII is going to be way to slow to be useful.

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                • #9
                  Originally posted by scott_fx
                  the gauge wouldnt be able to turn a shaft encoder
                  yes it would. i bet you.

                  optical ones have no drag.

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                  • #10
                    i didnt even think about an optical encoder. you are correct sir!
                    New System in progress:
                    M10k
                    Phaze TD1500 ~> Dynaudio MD130
                    Phaze TD1500 ~> Seas g18rnx/p
                    Zapco Ref 500.1 ~ 12" tc-9
                    Behringer DCX2496 ~ Envision Electronics psu
                    Transflective Xenarc

                    My Car Pc Install
                    My Boat Pc worklog

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                    • #11
                      Originally posted by scott_fx
                      i didnt even think about an optical encoder. you are correct sir!
                      hehe wanna know a secret....me neither at 1st...had to think to get myself out of that one!

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                      • #12
                        ha.. ok, well since we are getting all 'dr phil' over here and being honest... i never even heard of an optical encoder until you posted it and i did a search :-) they are pretty cool... now how can i use one in my setup! :-)
                        New System in progress:
                        M10k
                        Phaze TD1500 ~> Dynaudio MD130
                        Phaze TD1500 ~> Seas g18rnx/p
                        Zapco Ref 500.1 ~ 12" tc-9
                        Behringer DCX2496 ~ Envision Electronics psu
                        Transflective Xenarc

                        My Car Pc Install
                        My Boat Pc worklog

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                        • #13
                          haha love it.

                          the other option is a pressure transducer. Honeywell do some with RS232 interfaces but all you need is to interpret the signal - probably resistance which you can do with most I/O boards, phidgets, joystick port etc etc

                          hell you could always take the optical enocder out of a mouse scroll wheel or off the ball and use that!!!!

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                          • #14
                            Might as well use a pressure sensor such as MPX4250AP, changing output voltage with pressure, cost about $20.

                            Amplify the voltage (if needed) and send the measured pressure to PC, use serial or USB, easily done with PIC MCUs.


                            http://www.vpv-motorracing.com/MPX4250AP.pdf

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                            • #15
                              Opps

                              He want premade

                              Ignore my last post

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