Code to fix offset/delay teeth

[robh]

DME pin 27.

[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.

[Peter Florance]

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

[Peter Florance]

Sorry, finally got time to sit down and scope pin 2 of Reference Sensor on my test wheel

motronic1_ref_pin2_hot.jpg

(20.46 KiB) Not downloaded yet

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)

[Peter Florance]

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.

[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?

[Peter Florance]

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.

[Peter Florance]

Rob
Can you verify which pin of your sensors are connected to VR+ inputs?


Thanks!

[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.

[Peter Florance]

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