GPS on second comm port

[Seight-v8]

hello all,

Has anyone had success with this mod yet....since V1.1.89.

I am using V1.1.91 and when i've looked at the logs from the SDcard i still have no GPS info, checked all my wiring and everything looks as it should.

Dont know how to test the second comm port, if anyones got an idea that i could use to test it.

Its the last thing it need to work now, and i can finally put my dash back and do some driving.

cheers

scott

[Seight-v8]

So i've used tried a terminal command on the second port, and all that happens is, i get a return of the commands i've sent.

so if i send say V i get a returned V in the recieved box.

So i if send a file, i get the info returned in the recieved box.

So i presume this second comm port is working, but if i run the engine with the GPS connected, i still dont get a GPS time stamp in the log file.

Currently i only get a triggerlog and vemslog on the sdcard, should i also get a GPS log, or should this be included in the vemstune log.

So many unaswered questions, that are driving me mad.

cheers

scott

[Seight-v8]

so more testing/trying today...

I sent a GPS log file via the terminal command to the second comm port while the engine was running.....and still no GPS info in the vemslog

so i tired using the main comm port for logging the GPS data, and still no GPS infomation in the vemslog....

So now i cant think of anything else to try.....

Could it be a problem with the firmware?...or hardware somewhere...

I've saved a GPS log from my sensor and its exactly the same as the GPS file, i got from the wiki page to used for testing, so i know there' no problem here.

I must be the only person trying to get this to work.

scott

[boostd audi]

i am watching this.. i have never used the gps.

i am on 1.1.91 and log with sd card so i would love to hear the solution.

sorry i couldnt provide any further insight

[Seight-v8]

cheers, any help appreciated.....i really want to use this great feature.....

So i took my vems board out the case to investigate further....looking at pcb schematic & my genboard.....i am missing R111 (1G)....on my board......so looks like no connection to the chip....so no wonder it dont work.....

Can anyone confirm i need to make this connection before i fry something i dont want to.....

I got a pic of the schematic here...



And a pic of my board with it missing.



Just to to make sure i need this before i do anything.

Can anyone confirm a working second comm port for me?..and what is required to make it work...

cheers

scott

[Seight-v8]

well got my answer from vems today, and yes looks like it need a 4k7 resistor to make this connection, and get my second comm port working.

Hoping i can finally get this sorted and car wiring finished and car back on the road to do some proper tuning.

scott

[Seight-v8]

well today i followed the instructions from my email to vems hq, buy fitting a 4k7 resistor where R111 is shown on the schematic diagram.

At first nothing, but i removed the earth from the ecu pin header and connected it to the other ecu earths on my engine block.

An finally i have a sdcard log with a gps time stamp....and it now works.....

After 6 months of starting this mod and waiting for firmware....and problems, i can now finish the wiring/dash and get my card out into the sun.

Looking forward to using this with logging in the future, although i will miss the next kit car show, which is a shame...but maybe next year...

scott

[Sprocket]

Hi

I don't suppose you have any spare 4K7 SMD resistors (472) going spare I've got my box open for the last time and getting it ready to accept this GPS, but the rescue kit doesn't have any in it, and I don't need 5000 of them I have been quoted lol.

second chanel Knock also has missing components

[Seight-v8]

sprocket,

Sure i think i have what you need, drop me private message with your address and i will send you some.

I also added the second knock channel wiring to my vems unit....although i am not to sure its working correctly...and is still turned off for the mo.

regards

scott