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Re: Code to fix offset/delay teeth
Posted: Mon Nov 23, 2009 6:03 am
by robh
DME pin 27.
Re: Code to fix offset/delay teeth
Posted: Mon Nov 23, 2009 6:07 am
by robh
vrin1(+) is DME pin 27 and vrin2(+) is DME 26.
I connected both vrin1(-) and vrin2(-) (DME pins 8,25) to the Microsquirt pin 33.
Re: Code to fix offset/delay teeth
Posted: Mon Nov 23, 2009 5:05 pm
by Peter Florance
robh wrote:vrin1(+) is DME pin 27 and vrin2(+) is DME 26.
I connected both vrin1(-) and vrin2(-) (DME pins 8,25) to the Microsquirt pin 33.
That's pin 2 on the VR sensor; I'll check the waveform tomorrow to determine the correct edge. I think that's more important than stim testing
Re: Code to fix offset/delay teeth
Posted: Wed Nov 25, 2009 6:41 am
by Peter Florance
Sorry, finally got time to sit down and scope pin 2 of Reference Sensor on my test wheel
To me it looks like rising edge is correct, assuming:
1) Pin 2 of VR sensor is connect to VR +
2) Microsquirt VR does not invert (I'm 99% sure of this)
Re: Code to fix offset/delay teeth
Posted: Wed Nov 25, 2009 7:54 am
by Peter Florance
Peter Florance wrote:Sorry, finally got time to sit down and scope pin 2 of Reference Sensor on my test wheel
motronic1_ref_pin2_hot.jpg
To me it looks like rising edge is correct, assuming:
1) Pin 2 of VR sensor is connect to VR +
2) Microsquirt VR does not invert (I'm 99% sure of this)
I said MicroSquirt, but of course I meant Sequencer.
Re: Code to fix offset/delay teeth
Posted: Wed Nov 25, 2009 9:43 am
by robh
Thanks for taking time to record the waveform.
Strange thing is the car runs much more stable with Falling Edge and I am using a Microsquirt. I assume Microsquirt VR inversion would be same as Sequencer.
I have probably about 3 hours of driving time with the Falling Edge setting now and I have not yet experienced a resynch. Could this because it changed the phasing of the crank speed sensor w.r.t. the reference sensor?
Re: Code to fix offset/delay teeth
Posted: Wed Nov 25, 2009 10:38 am
by Peter Florance
robh wrote:Thanks for taking time to record the waveform.
Strange thing is the car runs much more stable with Falling Edge and I am using a Microsquirt. I assume Microsquirt VR inversion would be same as Sequencer.
I have probably about 3 hours of driving time with the Falling Edge setting now and I have not yet experienced a resynch. Could this because it changed the phasing of the crank speed sensor w.r.t. the reference sensor?
I'll test the Sequencer input and see what it does.
Re: Code to fix offset/delay teeth
Posted: Thu Nov 26, 2009 6:12 pm
by Peter Florance
Rob
Can you verify which pin of your sensors are connected to VR+ inputs?
Thanks!
Re: Code to fix offset/delay teeth
Posted: Tue Dec 01, 2009 5:46 am
by robh
Sorry I've been away visiting family for the holiday.
I will check into this as soon as I have a chance. I'll do a point to point check from the Microsquirt AMPseal connector to the 3-pin VR sensor connectors.
Re: Code to fix offset/delay teeth
Posted: Wed Dec 02, 2009 3:30 am
by Peter Florance
robh wrote:Sorry I've been away visiting family for the holiday.
I will check into this as soon as I have a chance. I'll do a point to point check from the Microsquirt AMPseal connector to the 3-pin VR sensor connectors.
Thanks Rob,
Once you know, I check with VR sensor at that polarity