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Tachometer Mod? Anyone heard of it? - Page 2

post #11 of 19
Thread Starter 
If I was smart enough to code an interface for a touchpanel that would be the schizz

Nope I want automotive type 2" round analog panel mount gauges like a hot rod would have...which I have pretty much found..although the PC tach thing that Barternder linked would have been perfect..
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post #12 of 19
for an amp reading of everything in your pc...you'll need to disassemble your psu a bit. on the pcb inside all the yellow wires are soldered to one terminal and all your black wires and red wires to their own terminals. just unsolder the yellow wires, solder one end of your ammeter to the pcb and the other end to your yellow wires. This will only work for a single rail psu though, if you have multi rail psu then i think there will be more than 1 terminal for all the yellow wires so you'll have to go with 2 or more ammeters in this case. (not 100% sure on the multirail as i've never pulled a multirail psu apart before)
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post #13 of 19
Thread Starter 
Oh Wow...I get to void a warranty too
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post #14 of 19
It's a car part, so the Tachometer should be able to run off PC power, but. . . as for hooked it up to the hard drive, that's a different story. . .

Maybe you could figure out what tachometer they use for the PC Tachometer, order one from the manufacture, get ahold of a serial cable and the software, and just do a bit of playing around?
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post #15 of 19
For the harddrive, I'm quite certain that you could use the onboard HDD monitor for it. As long as that tachometer doesn't require too much amperage, you can always wire it directly to it, and every time the LED should light up (on a normal case), the tachometer would react.
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post #16 of 19
Well, it looks to be a standard cheap Sunpro tach from your local Advanced Auto Parts.....so you can at least buy that.

The hard part is trying to figure out how it is wired and finding the software....

Hmmm....it doesn't look hard really....lemme look around some more for ya...



[http://www.envador.com/CPUMAG/DashboardPCArticle.htm

^^^^^^ How well does that help you?
 
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post #17 of 19
Thread Starter 
I bought some itty bitty gauges from Advance yesterday and may have a chance to play around.

For the ammeter hookup I am gonna make a shunt to the PCIe power to the GFX card just to see what that does. It would be cool if it jumped up when the card went under load.

The Oil Pressure gauge is a no brainer although the sensitivity will be minimal (60 PSI gauge).

The temp gauge is prolly not going to work out..but it was a three gauge set.

I will mess around with the lil tach I got and see what it does..

I contacted Xoxide and the replied the mfr had discontinued the part and they had no leads for me.

My guess is something like a Timer/Clock IC that sends a series of rapid pulses that increase in frequency triggered by a 3V input (IDE activity LED). The longer the HDD LED is on the faster the pulse would ramp up...hence giving the impression of increase RPM to the tach--which simply reads momentary pulses off the distributor condenser.

I haven't built an IC PCB since HS lol so it's a vague memory...but it seems easy enough to make a series of clock IC cascade so as to create more and more pulses the longer they run...I dunno...some sort on mini amp to step up the voltage of the pulses until the tach can read it?

It would be neat to have a lil black box that goes between any tach and the IDE pin out on the FP header...
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post #18 of 19
Interesting... so is this baby going to have "slicks" on it too
    
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post #19 of 19
Thread Starter 
Kelly's...can't afford Mickey T's
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