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-   -   Megatune COM port problems (https://www.miataturbo.net/megasquirt-18/megatune-com-port-problems-17786/)

Joe Perez 05-20-2009 02:13 PM


Originally Posted by albumleaf (Post 410393)
Do I need to supply power to the MS before the laptop will recognize it?

Yes.



Is the power supplied through the ECU harness or the serial port?
Through the DB-37 connector.

albumleaf 05-20-2009 02:22 PM

Alright thanks for the heads up, was just curious because I know you can get a small amount of power over serial. Lookin' to be up and running by the weekend :D

NAshowdown95 11-17-2009 11:05 PM

Having a similar problem, the laptop is recognizing my usb to serial adapter when plugged in but no driver has worked for it, even the driver sent with the cable, when i open device manager on my windows (xp) it shows up the yellow triangles which i assume is a problem with the driver?

poobs 11-18-2009 11:41 AM

I don't remeber exactly how it went but I drove myself nuts with something I thought was device manager related.
It turns out that device manager will only display things correctly when the cable is plugged in.

NAshowdown95 11-18-2009 10:03 PM

well i have the usb to serial cable plugged in and it still shows no driver for it, or i assume thats what the yellow triangle is. It also wont communicate with the MS1 or megatune likewise

poobs 11-19-2009 07:54 AM

Do you have the DIY adapter or another brand ?

Their adapter comes with the driver and the driver can also be down loaded from the DIY site.

The DIY site also has a utility that helps you sort out comm problems - don't know what it is called.

I had problems connecting to Megatune only using a Rat Schack cable/adapter but was able to connect to Tuner Studio. When I got the DIY adapter I was able to connect to both programs.

You may want to email matt. He helped me out a lot with my issues ( matt@diyautotune.com )

NAshowdown95 11-19-2009 11:44 AM

awesome thanks for the info

poobs 11-19-2009 03:38 PM


Originally Posted by NAshowdown95 (Post 484602)
awesome thanks for the info

I was trying to post the link to the com Check thing but it seems to be part of the software on DIY software page.

Did you make any progress ?

NAshowdown95 11-19-2009 07:23 PM

still no progress, it just keeps showing that the driver isnt installed. after the 3534535 time trying to install it

poobs 11-19-2009 07:28 PM

If you have DIY's adapter you can also down load the driver straight from them....

Did you do searches under "Communication Problems" and stuff like that. I think we have had issues with connectivity.

Also check Miata.Net

NAshowdown95 11-19-2009 08:17 PM

i believe its the usb-serial adapter im using, crap, im going to just get DIY's adapter

poobs 11-19-2009 08:28 PM

:ugh2:Chances are good that it will solve your problems

NAshowdown95 11-19-2009 11:14 PM


Originally Posted by poobs (Post 484850)
:ugh2:Chances are good that it will solve your problems

thanks for the help man....:bigtu:

poobs 11-20-2009 08:39 AM

No problemo :x:

poobs 12-21-2010 09:22 PM

I'm stumped.

I haven't tried to connect to my MS in a few months but last time I did everything was fine.... Today I can't connect to Logworks,Megatune or Tuner Studio.

Tried all the ports, tried Ports Check and it tells me there are 2 ports open. The lap top makes that "Bing" sound when I plug and unplug the cable.

I downloaded the driver for my adapter from DIY again and I still can't connect to any of the above programs !!!!!!!!!!!!!!!!! :vash:

Matt Cramer 12-22-2010 09:29 AM

What port is the USB adapter using?

poobs 12-22-2010 11:03 AM


Originally Posted by Matt Cramer (Post 671900)
What port is the USB adapter using?


Hi Matt!! :wavey:

The lap top has 3 USB ports in the back. I don't know how it assigns numbers or designations to them but I tried all of them.

The ports work for other things like a wireless mouse...

Any stuff I can try ?

shuiend 12-22-2010 11:35 AM

What type of laptop do you have? I would suggest trying a different laptop and see if that works. You might also want to go to a local goodwill and see if they have any old laptops for sale. I recently picked one up for $25 that had a real serial port and it works great for running TunerStudio.

poobs 12-22-2010 12:12 PM

Thanks!! It is a Dell Inspiron 1200. It is pretty old.

Matt Cramer 12-22-2010 12:38 PM

I meant the COM port number, sorry for not making that clear.


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