MS3 PnP build - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 10-20-2011, 10:46 PM   #21
Senior Member
 
Join Date: Aug 2010
Location: Maumelle, AR
Posts: 618
Total Cats: 2
Default

Ah man... Why didn't I think of that... I got me an ugly *** adapter cable wrapped in black tape.
ianferrell is offline   Reply With Quote
Old 10-21-2011, 12:12 AM   #22
Senior Member
 
Join Date: Dec 2004
Location: Brisbane, Australia
Posts: 1,272
Total Cats: 32
Default

After getting permission from Jason I have had a PCB printed for the alternator control circuit incorporating the dash light driver. If anyone is interested, when I receive them I'll post up some pics.
timk is offline   Reply With Quote
Old 10-21-2011, 03:18 AM   #23
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,441
Total Cats: 198
Default

Quote:
Originally Posted by y8s View Post
the output of the known working alternator circuit that goes to the field coil to the place in the above where it says +12 and the output of the above to the field coil and then set the output to only be enabled for over 450 rpm so it doesn't charge during cranking and make your belt squeal for 20 seconds every time you start your car.
The alternator control is NOT your issue. My board tried to charge from 0rpms and up (a failsafe system, in case the tach signal gets lots etc), and I have no belt squeal. Nor do any of the cars that use my MS2s.
Reverant is online now   Reply With Quote
Old 10-21-2011, 06:11 AM   #24
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: Belgium
Posts: 939
Total Cats: 59
Default

Quote:
Originally Posted by saboteur View Post
After getting permission from Jason I have had a PCB printed for the alternator control circuit incorporating the dash light driver. If anyone is interested, when I receive them I'll post up some pics.
Did you make them so they slide in the case?
WestfieldMX5 is offline   Reply With Quote
Old 10-21-2011, 07:27 AM   #25
Elite Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,658
Total Cats: 39
Default

Quote:
Originally Posted by saboteur View Post
After getting permission from Jason I have had a PCB printed for the alternator control circuit incorporating the dash light driver. If anyone is interested, when I receive them I'll post up some pics.
Well I'm interested (and also in purchasing one if it becomes available)
richyvrlimited is offline   Reply With Quote
Old 10-21-2011, 11:20 AM   #26
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Quote:
Originally Posted by Reverant View Post
The alternator control is NOT your issue. My board tried to charge from 0rpms and up (a failsafe system, in case the tach signal gets lots etc), and I have no belt squeal. Nor do any of the cars that use my MS2s.
Maybe it's not, but now it doesn't squeal at startup. Whatever the belt tightness is combined with the additional load from the alternator at startup was making it squeal. Since I don't have a belt tension gauge or the ability to decrease the load from the water pump... I did it my way.

And as a bonus, when the engine tries to stall, it doesn't die as easily.
y8s is offline   Reply With Quote
Old 10-31-2011, 09:01 AM   #27
Senior Member
 
Join Date: Dec 2004
Location: Brisbane, Australia
Posts: 1,272
Total Cats: 32
Default

Here is a quick shot from my iPhone, these boards are tiny:



Now I'll stop derailing your thread!
Attached Thumbnails
MS3 PnP build-photo.jpg  
timk is offline   Reply With Quote
Old 10-31-2011, 09:48 AM   #28
Elite Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,658
Total Cats: 39
Default

Want!
richyvrlimited is offline   Reply With Quote
Old 10-31-2011, 09:55 AM   #29
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

Y8s and I discussed doing these, stamped, but we never got around to it due to our shear laziness.

Let me know about how to secure a few of them...
Braineack is offline   Reply With Quote
Old 10-31-2011, 11:22 AM   #30
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

only design change I would have suggested is a teenie tiny high quality multi turn trim pot to set the final voltage.

that said, can I have one?
y8s is offline   Reply With Quote
Old 10-31-2011, 12:34 PM   #31
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: Belgium
Posts: 939
Total Cats: 59
Default

also I would use an axial capacitor (ie layed down) to reduce the height of the board so you can slide it (upside down) in the top slot of the case.
WestfieldMX5 is offline   Reply With Quote
Old 10-31-2011, 10:48 PM   #32
Senior Member
 
Join Date: Dec 2004
Location: Brisbane, Australia
Posts: 1,272
Total Cats: 32
Default

Let me populate one to make sure it works first. I like the idea of changing the footprint to suit a MegaSquirt case. The trim pot and axial cap changes could be implemented too.

These ones I have now (assuming they work alright) will be good for chucking in a small plastic sealed hobby box and using for any aftermarket ECU. I'm planning to use one with the Adaptronic in my track pig.

Jason should take the credit for this as it is his circuit. All David and I have done is lay it out so it looks pretty.
timk is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Buzzing from driver side of engine bay? (MS3 install) nick470 MEGAsquirt 7 06-16-2017 02:53 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Bizarre connection issue? nick470 MEGAsquirt 1 09-30-2015 11:32 PM
Any pnp megasquirt for 2001 Big_gumby WTB 0 09-30-2015 04:34 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:57 PM.