617 Oil pressure gauge instead of idiot light sender? - PeachParts Mercedes-Benz Forum

300 Super D · #1 08-02-2015, 04:53 AM

I wanted to know what the pressure actually is when needed, and my intent was to also put one of these on the dash.

Very cool LED warning BEEPING light
https://www.youtube.com/watch?v=LdU6u8bfxa4

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Jeremy5848 · #2 08-02-2015, 11:30 AM

Quote:

Originally Posted by 300 Super D

I wanted to know what the pressure actually is when needed, and my intent was to also put one of these on the dash.
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That's a nice product. I wonder if the beeper can be heard over engine sounds, radio, etc? My alarm is similar except it has no beeper.

leathermang · #3 08-27-2015, 07:19 PM

Quote:

Originally Posted by Jeremy5848

That's a nice product. I wonder if the beeper can be heard over engine sounds, radio, etc? My alarm is similar except it has no beeper.

That is nice... they claim 80 db volume ..... which I think would be enough..
so a properly calibrated sending unit mated up to it.... very important that important warnings be AUDIBLE.... all the important ones on airplanes are...

mach4 · #4 08-27-2015, 08:00 PM

It would not be too difficult (relatively speaking) to implement a microcontroller-based engine warning system. I'd envision sensors for oil pressure, coolant level, oil level and fuel pressure. My first cut on system logic would be to have it chirp when the key is turned on to alert the driver that the system is live but not throw warnings until it recognizes that the the engine is actually on. I'd use oil pressure (as normally used in Hobbs meters) as the indicator that the engine has started. A RGB LED would glow Blue until the engine is on and sensors are normal at which point it would glow Green. A fault would sound an audible alarm and turn the LED Red and flash 1,2,3 or 4 times to signify which sensor had tripped (unless a gauge is present for that sensor). A pushbutton would silence the alarm but the LED would still flash. Since it's a microcontroller the trip points could be programmed as desired.