lost sync reason 38 (4g63)
#5
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ok after many more hours of research i found out what the problem is.
apparently i need the 2nd opto circuit for the cam signal for people after me
Second Opto circuit in VR space on 3.0 PCB - Miata Turbo Forum - It's the Cat's Meow
how the hard part how the #### am i gonna build that
apparently i need the 2nd opto circuit for the cam signal for people after me
Second Opto circuit in VR space on 3.0 PCB - Miata Turbo Forum - It's the Cat's Meow
how the hard part how the #### am i gonna build that
#7
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yea i dont know, ive check everything else and it seems ok so only thing ive found is this.
did you follow this for your tach select etc..
Megasquirt 2 Assembly - Miata Turbo FAQ
did you follow this for your tach select etc..
Megasquirt 2 Assembly - Miata Turbo FAQ
#19
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I guess you're probably going to need to do the opto circuit.
I still think it's odd as I've never run into the issue, but others have. I myself ran without, and I have at least 3 other locals still running ms2 without it here, as well as a handful of others.
I believe the issue you're having is that the input isn't pulsing. The CAS is not dropping the input to JS10 back low to ground. So on your composite log, I'd expect too see a sold green line, a constantly pulsing blue line (up down up down up down), and a red line that pulses every few moments; all in a pattern.
the circuit is pretty easy:
![](https://www.miataturbo.net/attachments/megasquirt-18/59716-lost-sync-reason-38-4g63-2ndcas_input.gif?dateline=1352818226)
you'd build it in the proto area, not on the daughterboard.
I still think it's odd as I've never run into the issue, but others have. I myself ran without, and I have at least 3 other locals still running ms2 without it here, as well as a handful of others.
I believe the issue you're having is that the input isn't pulsing. The CAS is not dropping the input to JS10 back low to ground. So on your composite log, I'd expect too see a sold green line, a constantly pulsing blue line (up down up down up down), and a red line that pulses every few moments; all in a pattern.
the circuit is pretty easy:
![](https://www.miataturbo.net/attachments/megasquirt-18/59716-lost-sync-reason-38-4g63-2ndcas_input.gif?dateline=1352818226)
you'd build it in the proto area, not on the daughterboard.
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Zaphod
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10-26-2018 11:00 PM