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if 1 is true how does the durametric pick it up plugged into the obdii port? Are there pins in there that generic readers dont use that durametric does?
for 2 - theres no way to write that into some software? can't reverse engineer whatever durametric is using...
if 1 is true how does the durametric pick it up plugged into the obdii port? Are there pins in there that generic readers dont use that durametric does?
for 2 - theres no way to write that into some software? can't reverse engineer whatever durametric is using...
Yes to your first question and yes it's possible to reverse engineer durametric, which itself was reverse engineered from the Porsche scanners.
This could be very simple using the $24 Cirtcuit playground. It has an arduino and some leds. Only need to wires to the sensor.
Can probably be powered using the USB so only need a a charger for that, or bats.
Would make a nice gauge.
There is also a $5 case. You wouldn't see exact temp but I guess the range 200 - 300 is interesting. So each LED would be 10 degrees.
Gosh I love reading these kind of innovations, I really do. Just wish I understood it. Keep up the good work guys and when the kits come out, then I understand simple 'plug and play' technology. I pay for the kits people create without question because of your-alls fantastic determinism and I appreciate that! .
This is a great old thread that deserves to be revived. @Ahsai Im guessing your pinout plug III pin 5 is referencing DME 7.8
Im looking for the correct pin on DME 5.2.2, but my wiring diagram is not clearly legible. I can see the sensor is pin 13 in engine connector X59/2, (one of the round ones in the engine compartment) but I cant read my diagram well enough to trace it back to the DME. Any advice/clues?
This is a great old thread that deserves to be revived. @Ahsai Im guessing your pinout plug III pin 5 is referencing DME 7.8
Im looking for the correct pin on DME 5.2.2, but my wiring diagram is not clearly legible. I can see the sensor is pin 13 in engine connector X59/2, (one of the round ones in the engine compartment) but I cant read my diagram well enough to trace it back to the DME. Any advice/clues?
Hi Coopduc, the equivalent pin on your 5.2.2 DME is pin 73
@ahsai: can you elaborate a bit on the circuit in post 29? I assume the 5v reference voltage does not exist in the DME, so a simple circuit will need to be created maybe using a VXO7805 or LM7805 and a couple of 10mf capacitors, the R2 is the temp sensor in the engine, and V is the gauge? so an Arduino is not needed?
@ahsai: can you elaborate a bit on the circuit in post 29? I assume the 5v reference voltage does not exist in the DME, so a simple circuit will need to be created maybe using a VXO7805 or LM7805 and a couple of 10mf capacitors, the R2 is the temp sensor in the engine, and V is the gauge? so an Arduino is not needed?
No, post #29 is just explaining how the stock DME/coolant temp circuit works. DME does have internal 5v signal. Anyway, it's not something you build. You need to build the whole circuit in post #15 so you can use a mechanical gauge.
So the signal on pin 73 (5.2.2 DME) is just the oil level/temp sensor output? And that output is an analog NTC signal?
I'm looking to log oil temps to a race logger, but I read some thread about the output being an unreliable calculated value.
Reading RL threads can get confusing when some authors content is not accurate. What pin is the input to DME from the sump sensor?
So the signal on pin 73 (5.2.2 DME) is just the oil level/temp sensor output? And that output is an analog NTC signal?
I'm looking to log oil temps to a race logger, but I read some thread about the output being an unreliable calculated value.
Reading RL threads can get confusing when some authors content is not accurate. What pin is the input to DME from the sump sensor?
For 5.2.2, pin #73 is the one you want to tap into. It's an analog signal that indicates the oil temp (not oil level). It's a direct measurement taken from the oil temp/level sensor and it's NOT a calculated value.
For your purpose, you just need to program your logger to map the signal (in volts) to oil temp. I have the graph in post #15.
04-16-2017, 08:07 AM
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