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Building the Brains for a Budget Racer: Jaguar A7 #42 
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LQFP112 - Up with the play
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I think the IGN LEDs are backwards. Per the schematics below, the anode should be on the right. The LEDs on my A7 have the cathode (note green dot) on the right (as in the photo above), and the anode on the ground plane.

Image

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Thu Aug 04, 2016 2:58 pm
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Warranty claim? :-D

Probably not worth messing around to fix those. Can if you want.

Config time, then? Or is it close enough to your car to give it a shot with that S19?

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Thu Aug 04, 2016 8:46 pm
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LQFP112 - Up with the play
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You're exactly right- I just need to overcome my OCD and walk away to more important things. Like config files. I think the warranty is a one-use thing- so I'd like to save it until I have a running/driving car. :lol2: I think it is close enough. What are you thoughts about trying to find the OE cam/crank offset for a 95 Miata and building the fw with that?

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Thu Aug 04, 2016 9:40 pm
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My thoughts are: Use a timing light.

Note, whatever offset you come up with, there are two that will produce the same ignition, but opposite fuel phasing. Once running and a bit tuned, try the other and see which runs best. Likely a subtle difference, so don't bother if you're short on time. More fine tuning is possible, but not straight forward at the moment.

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Thu Aug 04, 2016 9:59 pm
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LQFP112 - Up with the play
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This happened:
Image

Of course those LEDs are from IG3 & IG4 because I somehow popped the lid off IG1 LED and IG2 LED went shooting across the room making a quick exit from the tweezers. Also stole IG3 resistor because IG1 vanished. Started messing with solder wick trying to unmount these SMD LEDs and that was waste of time for me. Had all of them off with ChipQuick in minutes. Got the pads cleaned with flux/wick and laid down the two LEDs for some onboard video action: https://www.youtube.com/watch?v=zI8G7T9Uf-c

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Fri Aug 05, 2016 3:04 am
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Good stuff! Ship it out, on with the show, etc :-D

Can you check one thing for me? I'm a little paranoid about your ground jumpers. Can you verify that injector grounds and CPU grounds are isolated? Cheers :-)

EDIT: Did you put some strain relief crimps in the regulator leads as per the instructions? (not sure where they live, but...)

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Fri Aug 05, 2016 4:59 am
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LQFP112 - Up with the play
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Grounds checked. Zero continuity from INJ/OUTPUT-GND to the CPU/SENSOR grounds. That is the request correct?

Wasn't aware of the strain relief crimps. The instructions I've referenced are "Jaguar 0.6-alpha Assembly Guide" viewtopic.php?f=67&t=2343. Didn't see any reference of strain crimps there.

A forum search found a dedicated thread here: "Strain relief for the TO-220 voltage regulator leads" viewtopic.php?f=67&t=2262&p=35527&hilit=strain+regulator#p35527

Unfortunately I didn't do this to my A3- unless Hentai did it when he had it, I"ll have to update.

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Fri Aug 05, 2016 1:27 pm
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Yeah, that's what I meant.

Don't worry about it too much. It depends how you mount it as to whether it matters. In the official case it matters a lot. In your setup maybe not at all.

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Fri Aug 05, 2016 1:39 pm
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LQFP112 - Up with the play
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Fred wrote:
Don't worry about it too much.

Actually I think the PCB rails I use to mount (slide) the Jag in have enough tolerance to avoid the load concern here.

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Fri Aug 05, 2016 1:42 pm
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Fuel pump (HSD) works. I'm going to connect it to my jimstim and twist some knobs at this point. Then start the OE case install.
video courtesy of disco LED: https://youtu.be/3ti_jUyiEps

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Fri Aug 05, 2016 8:56 pm
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