.::evil inside::.

ok so I have a problem... outputs!
I'm running MS2 v3 on msextra 1.0.2 running twin vr circuitry and stock CAS.

The only auxiliary output I have gotten to work is FIdle which seems to just be a grounding output, it doesn't emit any voltage and that is fine.

My problems lie with the outputs js0, js2 (IAC1a, IAC2a), and js11 (pa0). I attempted to use the IAC outputs without the jumper from sc12 to js9 (hadn't occurred to me that I didn't have it connected) One gave a constant 12v output and the other gave nothing. I connected js9 to sc12 and found the same results regardless of the settings in megatune. I also tried using IAC1b and IAC2b but I had no luck. I tried pa0 before I connected the jumper from js9 to sc12 from memory and it worked fine, however now it isnt working! It is really melting my brain not having the outputs I want and I was hoping someone could help point me in the right direction as to what my problem is. I was full of motivation this morning when I set out to get my outputs working and I had the small success with FIdle and js11 which was encouraging, but it steadily went downhill from there and now I'm making this thread with no motivation left to work on the car haha.

my output settings look something like this just for testing purposes.



my intentions for the outputs are to run my thermo fans, run a shift light, run a coolant temp warning light and perhaps a spare output for whatever.

muythaibxr

The outputs are meant to be used as grounds...

So the ones where you saw "nothing" should've actually been grounding when they were on. You normally hook a relay, or a higher-current transistor to the output and then hook the relay or transistor to the thing you're trying to turn on. Normally with a transistor, it also switches ground, so you want to run +12v to whatever it is you're trying to turn on/off.

Ken

.::evil inside::.

yeh I thought this might have been the case Ken, however I'm not getting a response from the outputs whether it be ground or +12v or +5v... when I had pa0 working it was giving +5v. One of the IAC's seems to have 12v all the time and the other has nothing. I'll do some more testing and see if I can get anything to happen...

.::evil inside::.

ok so I've just been having a fiddle with the car, I decided to put everything aside and just concentrate on js11 (knock in, aka. pa0) now, with this output its just staying grounded the whole time. I enabled pa0 with every setting available in the menu and it was still grounded (tested with multi or an LED on separate occasions). I tried disabling pa0 in the outputs menu and it just stayed a ground. So there is obviously something wrong. I've tried disconnecting the jumper between js9 and sc12 with no luck. Another strange thing I just noticed when I had an led connected to constant 12v and js11 was that when I turn the megasquirt off the led stayed on... so the js11 output is just staying as a ground 100% of the time no matter what I do!

ideas?

muythaibxr

What version of the firmware are you using? There were a few bugs with some of the outputs that are fixed in the 2.0 betas, so I'm wondering if you're not running into one of those.

Also, the IAC outputs are reversed, so whatever you set for IAC1, IAC2 will do it, etc... That's a megatune bug.

Ken

.::evil inside::.

I'm running ms2 extra 1.0.2 - release. If I change to the 2.0 beta will I need to change anything else on my megasquirt? or am I good to just trial it?

I was also very aware that the IAC's are reversed and when I tested them I tested both of them at the same time, every time just to be sure there was nothing strange going on with them with reversals etc... I'll let you know how I go with the 2.0 beta when I get a chance to test it, that might not be for a couple of days though. we'll see. Thanks for your help this far mate

.::evil inside::.

still no love on the outputs, tried running beta 2.0 with no success... beginning to think its hardware related but I've no idea where to even start. I might just have to get over it and leave my MS output-less

muythaibxr

I don't know what to tell you, I've not had any trouble at all with any of the outputs.

I fixed a few bugs in 2.0 that were never fixed in 1.0.x with outputs, I'll have to go back and figure out which output wasn't working.... the IAC's have worked for me from the beginning. I used one of them for a coolant fan, and one for VVT on the 20v 4age (ae86).

Ken

Cochrane

I have the same weird problem but I am sure that doesn't surprise Ken at all ha ha!
I can't get anything to switch my shift lights. I ended up giving up.
I might try the firmware beta.

Maybe it's a Aussie thing?

.::evil inside::.

Must be an aussie thing mate, I gave up! however I've clocked up a few k's now with no troubles. MS is working just fine! except I seem to be having some trouble starting when cold at the moment.

on another note, rather than starting a new topic I thought I'd ask and see if it is ok to run two relays through my one output that actually works which is a grounding output. Just providing 12v to the relay constantly and earthing the relay with the ms, like this.



but x2

.::evil inside::.

well, I cant just run the earth to my megasquirt as it seems to make my temp sensor go bananas! so I need to develop a circuit so that the megasquirt earth triggers a body earth for the relays or something... any suggestions?