RevZ wrote: ↑Sun Mar 04, 2018 9:12 pm
Rob Ashton wrote:... However the timing light shows what you actually have, when it catches and it advances it sounds like the timings not locked so still reading off the spark table even though it appears you have the fixed settings ??? Why don't you set 10Deg to all the cells in the spark table in case it is actually reading from it then it cant advance.
...
Rob
... The only problem I have is that when it does catch and exceeds the cranking RPM value, timing just jumps to some unknown place and doesn't come back to normal unless I do a power cycle.
Good tip about the spark table cells though, will do! It seems like the timing lock setting doesn't really work for some reason, like with the fan hysteresis setting. Don't know what's going on there..
is @PSIG still available to maybe comment on the situation?
RevZ - I don't know that I have a grip on the situation well enough to comment at this point. I'm not sure what you have or have not done. I would pursue Rob's suggestions for locking and/or fixing cell values for more clues. If the sprk was consistently out, that would be an easy phisical or settings fix, but I need a handle on exactly what is going sideways, under what conditions, to make any observations. Please post a short log of starting attempts, along with the msq containing the settings that produced the log. Maybe some more info there that is in-context. Else @noisymime may be able to run your msq on the bench with his tools in order to get some clues.
atntpt wrote: ↑Sat Mar 17, 2018 1:41 am
Hi, so I'm about to build a v0.4.3 board for my 1.8 nb1 turbo mx5
I have some questions before start building it :
1: doing 4 channel I should be able to run it in fully sequential right? (ignition obviously with COPs )
2: about alternator (can't find the post in additional boards ,link??) is the mx reg board for sale PSIG?
Does anyone tried IC L9409?
@atntpt - yes, sequential is an option. No, the MX-Reg is already obsoleted, as we are moving to a more advanced processor-controlled ARC (alternator regulator controller) to allow more options and controls. The initial test control code is running in a daily driver MX-5 test mule now.
However, release of the ARC is delayed as we are also including control support for a variety of makes and models well beyond the MX-5 that use vastly different control schemes. That said, let me know (PM me) when you would be requiring alternator control for your MX-5, and we can set you up for testing the latest Beta unit at that time, or get you going with an updated basic version in one way or another.
The L9409 is a generic controller IC, that can work for the MX-5 system if you want to try it out. It also functions in basic ways, so control options are limited, but should work to function a basic charging scheme that uses PWM for alternator field control. Note that the intent of the L9409 is to integrate it into the alternator, so some functionality is lost if you instead mount it remotely, but basic voltage control within about 1/2-volt (depending on temperature) should still be available, much like the Westfield board listed here earlier.
David