Another MegaSquirt

Wed Oct 11, 2006 12:54 pm

After reading a lot of posts about MegaSquirt and finding out what all it can do I was sold lol (really is some piece of kit) so I ordered the unassembled kit and got it last Friday, busy weekend building it up.

After reading the manual a few times and understood what went where I got the soldering iron out and got to work. Worked though all the steps and completed the tests at each section bar one

for some reason I cant get my RPM to work everything else is working fine IÃƒ¢Ã¢”š¬Ã¢”ž¢ve tried turning R56 and R52 7-8 turns like the manual said but get no read out in megetune. Part from that everything went fine

Took a few photos, not the best only had my phone handy

Just need to get a few sensors and the wiring hardness then the fun really starts hehe

Wed Oct 11, 2006 12:58 pm

Well done!

My V3 took about 8hrs to build one cold rainy night a few weeks back.

Something in my head tells me the two blue bits with the tiny screws need to be clicked all the way back to get the rpms working but I'd better ask Ant to be sure.

Are you going for wasted spark or the single coil setup? I can supply pics of my V3 if needed although it's been modded again for a few extras now

Mark.

Wed Oct 11, 2006 1:13 pm

I didnÃƒ¢Ã¢”š¬Ã¢”ž¢t really want to play about with the trimmers to much, just in case I did something to damage the board, maybe wait and see what Ant says

I was thinking about the wasted spark idea but what all is required for the setup?

Be great if you could send me a few photos, check out the extras to

, i may need a few myself soon

Wed Oct 11, 2006 2:23 pm

JonnyBravo wrote: I was thinking about the wasted spark idea but what all is required for the setup?

Be great if you could send me a few photos, check out the extras to , i may need a few myself soon

For wasted spark you need the additional two fets and some resistors, the circuit diagrams are on MS site.

I'll download the pics I have and send them over/post them later on.

I've gone for boost, water injection control, solonoid for boost is at home ready, just the pump and soloniod for the water to be bought/fitted.

Mark.

Wed Oct 11, 2006 3:01 pm

Great stuffÃƒ¢Ã¢”š¬Ã‚¦ keep the photos coming.

We could do with a Wiki on this site, so all our combined knowledge can be collected together.

Stuart.

Wed Oct 11, 2006 3:19 pm

That be some setup when all finished man

if you wanna send them via email, send them to jonathan@teamlsm.com or just post them here

I think i know why my RPM is not working but i'll have to wait till i get home before i find out, something silly

@Stuart - I'll try and get some better photos with the camera later 2nite and post them

Thu Oct 12, 2006 10:13 am

Well yes I made a silly mistake

I put R52 and R56 the wrong way round but it didnÃƒ¢Ã¢”š¬Ã¢”ž¢t fix the problem tho

Thu Oct 12, 2006 6:24 pm

dude, do you get rpm from the stim when set in normal ( non VR ) mode ?

if the answer is yes, enable "stim for wheel" and try again

Thu Oct 12, 2006 7:19 pm

so jumper it for Hall?

Thu Oct 12, 2006 7:39 pm

No mate, leave it jumpered for VR operation, on megatune, change the D14 output to reflect Spark, save the file !!

then go to "SPARK"- stim for wheel, click yes, stepsize = 1, then flash the ECU again, re-save the file to HD and you should get rpms.

with VR enabled and D14 as spark output, the rpm in MT should read 1 all the time

HTH

Thu Oct 12, 2006 7:54 pm

D14 was already set to "Spark output A" changed the stim for wheel like you said but still no joy

Fri Oct 13, 2006 4:42 am

well done looks like it is coming along. I would never be able to do this then deal with the 1 million and 1 mistake that i would make. hope you get it all working

Fri Oct 13, 2006 10:02 am

Got it working

was chatting to the Mad Professor last night on MSN and he got it sorted for me

I had missed a jumper

(silly me)

But thats it fully working now

Fri Oct 13, 2006 10:20 am

JonnyBravo wrote:Got it working was chatting to the Mad Professor last night on MSN and he got it sorted for me I had missed a jumper (silly me)

But thats it fully working now

Here that pic I mentioned

Fri Oct 13, 2006 11:16 am

Cheers man, all happy it works now

YouÃƒ¢Ã¢”š¬Ã¢”ž¢ve done some modifying to your MS unit

think IÃƒ¢Ã¢”š¬Ã¢”ž¢ll wire up the wasted spark

Where you get the other two VB921Z from?

Fri Oct 13, 2006 11:21 am

JonnyBravo wrote:Cheers man, all happy it works now

YouÃƒ¢Ã¢”š¬Ã¢”ž¢ve done some modifying to your MS unit think IÃƒ¢Ã¢”š¬Ã¢”ž¢ll wire up the wasted spark

Where you get the other two VB921Z from?

They were added as part of the package I asked for, sorta all in deal to get all the mods done at once. as in I didn't source them myself.

I would have thought maplins or the like would be able to help, if not a online electronics/parts store.

Ant may have bought some also, will speak to him later about it

Fri Oct 13, 2006 3:44 pm

Bill S was able to hook me up with the VB921s at Ãƒ”šÃ‚£5 delivered a pop. really helpful bloke, well worth using him, takes paypal which is handy and is very speedy, I've used him to get all sorts and he's helped me when I've had MS issues. can dig out his email addy if you like?
hth
tim

Fri Oct 13, 2006 3:59 pm

yes he's good, thats who i ordered my MS unit from.

Cheers man

Tue Oct 17, 2006 12:34 pm

Ok going to wire up the wasted spark

Seen this Omega Coil Pack on ebay:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... %3AIT&rd=1

It do the job ok?

Still need to order the VB921ZÃƒ¢Ã¢”š¬Ã¢”ž¢s but adding another connector to the MS box today

WhereÃƒ¢Ã¢”š¬Ã¢”ž¢s the best place to order the TPS and IAT sensors from?

Cheers

Tue Oct 17, 2006 12:46 pm

JonnyBravo wrote:
WhereÃƒ¢Ã¢”š¬Ã¢”ž¢s the best place to order the TPS and IAT sensors from?

Cheers

The coil pack is the same as Alex, Ants and mine so will be fine

TPS, M50 TPS or any variable TPS will do and IAT sensors Ant can get, I think he has a few in stock. I just flogged my spare one to Mark, typical

HTH, Mark.

Tue Oct 17, 2006 12:56 pm

happy days, i'll get that coil packed ordered up. cheers man

maybe drop Ant a email and see if he's got any sensors left

Sun Oct 22, 2006 6:06 pm

maybe goin at the weekend to get all the wires i need to make up my wiring harness

Would anyone have a wiring diagram? so i can splice MS into the old wiring loom

Cheers

Jonathan

Sun Oct 22, 2006 8:39 pm

urgh.. just looking about both yours and fuzzys circuit boards has given me a headache... your braver men that i lol.. which is why i'll happily pay Ant to do mine for me!

Mon Oct 23, 2006 10:24 am

dan_emaps wrote:urgh.. just looking about both yours and fuzzys circuit boards has given me a headache... your braver men that i lol.. which is why i'll happily pay Ant to do mine for me!

lol it may look like a knightmare man but its not to bad to build up as long as you can solder and understand what goes where (I missed a few things, but all good now)

The hard bit me thinks is the wiring up to the car and getting it tuned, thatÃƒ¢Ã¢”š¬Ã¢”ž¢s the bit IÃƒ¢Ã¢”š¬Ã¢”ž¢m not looking forward too lol

But weÃƒ¢Ã¢”š¬Ã¢”ž¢ll find out in a few weeks