i need help. i had set up my megasquirt like it says on aaron cakes page
but now i purchased the zeal board and i wanted to know how i could make both vr circuits work from the zeal bored

 

not sure if you've seen these or not ...

DIY Rx-7 FC Install

 

I think this is a good question that needs to be stickied.

I had/have the same questions and many other have too.

It would be nice to have some sort of diagram or pin-to-pin instruction showing the less electronics savy individual how to hook up the zeal board so that either one or two of the daughter card VR circuits work in conjunction with the pinout orientation of the AarronCake schematic.

the reason being is that the connection points of the DIY autotune and AaronCake's writeup conflict and unless you know the internal workings of each board, it can be confusing.

Example, one of the IAC pins is used as the e-fan switch in the AC writeup but is used for the Zeal in the DIY writeup.

Obviously there is more than one way of doing it but I would hazard to guess that the majority of the MS users are using the AC writeup as their bible and again, understanding that there are many diffrent ways of building this fuel controler, I do beleive that a schematic WRT AC's writeup is appropriate.

 

i tend to agree that there should be a comprehensive writeup, but that's the problem. like you said, there are too many ways to get the same result (a working engine) and it's compounded by the variety of MegaSquirt systems (self-made, pre-made, different versions, etc.) and the Zeal connections. so the prospect of a simple and comprehensive writeup looks bleak.

 

Why do you need to use both VR circuits on the zeal board?

What's wrong with the circuit built into the v3 board?

Ken

 

i wasnt getting any spark at all

 

do u still need the pull up resistors for the zeal board???

 

This is the aim of my writeup, but as I don't have a Zeal board and an MSII, I have not included that in the writeup. If you are using a Zeal board, however, there is no reason you can't follow my writeup. Just substitute the Zeal for the 2nd VR circuit, but make the same connections. You can use the same IAC and SPR pins that are shown on my schematic.

When I do have an MSII and a Zeal in my hands (maybe late this summer for my Cosmo?) I'll update my writeup.

That's why you need to follow one writeup, because the pin selection is an arbitrary decision by the person who made the schematic. My writeup follows how I always hook them up, while other people may use different pins.

 

The pullup resistors have nothing to do with the Zeal board BTW. The pullups go on the LEDs on the v3 board.

If you can't get spark are you getting RPM? If you're getting RPM and no spark, then the Zeal board isn't the problem.

If you're not even getting RPM, then you won't get spark, and the Zeal board *could* be the problem. However, it's very likely that there is something wrong with how you wired the v3 conditioner, or with the potentiometers or other wiring if you can't get RPM. Both v3 pots should be turned fully counter clockwise.

Ken

 

well i have rpm but no spark

 

Do you have your pullup resistors on the correct side of the LED?

 

yea they are

 

Which side then? Is the middle LED blinking while you crank?

Ken

 

wow, i'm really glad so many of you all have contributed to the vast expanse of megasquirt knowledge on the net. I love aaroncake's writeup too. Anyways I'm saving up for an MSII with V3.0. I wanna buy the kit put it together and all of this info is definitely going to help, it's much appreciated.

 

its just as pictured in aaron cakes page. and from what i can tell it is not blinking =/

 

i also have rpm and fuel im using my friends car to test it. so i know its not the harness or anything because his car is running perfectly. it is running on aaroncakes setup

 

If the middle LED isn't blinking when you crank and you're running MS2, did you remember to turn on trailing ignition? Can you post your msq?

Ken

 

im running ms1 on 3.0 booard

 

ill try and upload my tune soon

 

Ahh, on ms1, trailing doesn't fire on crank.

Ken

 

so then how can i fix the problem im having =/

 

bump bump bump

 

Are your LEDs on? Do they flicker when you crank? Do they flicker on the stimulator?

 

they r on i dont have a simulator i have a friends car i test my ms on

 

there is fuel and rpm signal the only thing im missing is spark