Custom LED boost gauge - calibratible!
Thread Starter
Joined: Dec 2003
Posts: 314
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From: orlando, fl, 32826
Custom LED boost gauge - calibratible!
This thing is an autometer A/F ratio gauge that was modified to work as a boost gauge! It uses a GM 2 bar sensor and is powered by a custom 5 volt power supply (2 calibratible outputs - 0-5v and 1 standard 5v output).
Everything you need is included to set this bad boy up - its a one of a kind!
Cost more than $200 to make, willing to sacrifice for $100!
More info here: http://www.7thgencivic.com/for...66522
Thread Starter
Joined: Dec 2003
Posts: 314
Likes: 0
From: orlando, fl, 32826
Re: Custom LED boost gauge - calibratible! (wantboost)
You can use whatever sensor you would like. You just need to have a way to power the sensor (5 volt power supply, usually off of the ECU - but the power supply I made should work just fine).
You could also modify the aluminum back plate to have some numbers on it if you wanted to (would require disassembling the gauge again). Other than that, I just calibrated it to top dead center for whatever value my boost controller was set to. That way I knew what boost I was running. If it went over that value, than I knew I had a boost spike (or other issues).
Kind of crude, yeah - but as long as you set the gauge to your max boost, it will never change, and you will always know you are pegging your boost out....
You could also modify the aluminum back plate to have some numbers on it if you wanted to (would require disassembling the gauge again). Other than that, I just calibrated it to top dead center for whatever value my boost controller was set to. That way I knew what boost I was running. If it went over that value, than I knew I had a boost spike (or other issues).
Kind of crude, yeah - but as long as you set the gauge to your max boost, it will never change, and you will always know you are pegging your boost out....
Thread Starter
Joined: Dec 2003
Posts: 314
Likes: 0
From: orlando, fl, 32826
Everything except the 5 volt power supply is off the shelf. I basically took a stock autometer gauge, took it apart, modified the internal circut a bit, reassembled it.
Than I had to have a reference power source since the gauge uses 0-5v to light the LEDs. I than created a shematic from a power supply circuit and had the 5 custom boards silkscreened from PCB123. I bought 1 enclosure from another source and mounted everything.
Since this thing uses a standard 5 volt source for the MAP sensor, if the 3.5 BAR map sensor you want to use does - it will work great (although, you may be limited in resolution, since there are only 20 LEDs). You may have to get another sensor harness too, as I'm not sure if the AEM sensor has the same plug style as the GM 2.5 BAR sensor.
Than I had to have a reference power source since the gauge uses 0-5v to light the LEDs. I than created a shematic from a power supply circuit and had the 5 custom boards silkscreened from PCB123. I bought 1 enclosure from another source and mounted everything.
Since this thing uses a standard 5 volt source for the MAP sensor, if the 3.5 BAR map sensor you want to use does - it will work great (although, you may be limited in resolution, since there are only 20 LEDs). You may have to get another sensor harness too, as I'm not sure if the AEM sensor has the same plug style as the GM 2.5 BAR sensor.
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