Author Topic: How to connect Vems with bluetooth?  (Read 30405 times)

Offline Benzmac16v

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Re: How to connect Vems with bluetooth?
« Reply #15 on: December 17, 2013, 01:08:15 am »
I would recommend keeping the ability to use the USB-Serial adapter.  At least for initial setup and firmware updates.  I did do a firmware update over bluetooth but it takes longer and I am not sure what will happen if you loose connection in the middle of an update.  I cannot imagine it would be good, so my firmware gets updated over USB.

Also, I don't think that bluetooth is fast enough to capture a trigger log, so having the ability to swap the USB-Serial adapter would be valuable, but maybe not absolutely necessary.

Jim
1985 Mercedes-Benz 190E 2.3-16v - VEMSv3.3 1.1.92

MemberWiki: http://www.vems.hu/wiki/index.php?page=MembersPage%2FBenzmacx

Offline Kamuto

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Re: How to connect Vems with bluetooth?
« Reply #16 on: December 17, 2013, 07:57:22 pm »
Is this type of connection fast and stable enough to replace need for usb to serial adapter cable?
yes, it is more stable than usb serial adapters, it works much better when you have crappy ignition system where usb serial starts to disconect.
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valdas.sunokas@gmail.com

Offline lost

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Re: How to connect Vems with bluetooth?
« Reply #17 on: December 19, 2013, 01:06:41 pm »
I would recommend keeping the ability to use the USB-Serial adapter.  At least for initial setup and firmware updates.  I did do a firmware update over bluetooth but it takes longer and I am not sure what will happen if you loose connection in the middle of an update.  I cannot imagine it would be good, so my firmware gets updated over USB.

Also, I don't think that bluetooth is fast enough to capture a trigger log, so having the ability to swap the USB-Serial adapter would be valuable, but maybe not absolutely necessary.

Jim

Can you try if its fast enough to record log file?
I had disconnect & freeze problems after 5-10 minutes, but i think its becouse of slow netbook -old atom CPU with profilic usb to rs232 adapter.
Ignition was active COP. I also remember i had problems with one or two cylinder power values. So maybe it is ignition related. !?
« Last Edit: December 19, 2013, 01:08:59 pm by lost »

Offline Benzmac16v

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Re: How to connect Vems with bluetooth?
« Reply #18 on: December 21, 2013, 01:09:00 am »
I tried to grab a quick trigger log with the bluetooth module.  I haven't used it since I "upgraded" to Windows 8, and, although the set up looked identical to Windows 7 I couldn't get it working.  When I get time to workout bluetooth I will report back if no one else does.

Jim
1985 Mercedes-Benz 190E 2.3-16v - VEMSv3.3 1.1.92

MemberWiki: http://www.vems.hu/wiki/index.php?page=MembersPage%2FBenzmacx

Offline lost

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Re: How to connect Vems with bluetooth?
« Reply #19 on: March 04, 2014, 04:02:28 pm »
Did anyone used EC36-pin28 +5V to power bluetooth?

Offline mattias

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Re: How to connect Vems with bluetooth?
« Reply #20 on: March 04, 2014, 04:24:04 pm »
Yes. Add to that, the universal harness does this.

Offline Seight-v8

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Re: How to connect Vems with bluetooth?
« Reply #21 on: March 04, 2014, 08:06:59 pm »
yes my Bluetooth adapter works fine running the 5v from my vems ecu.....

My Bluetooth adapter will work with 5-9v either battery or from pin 9 on the dsub.

Mines wired to feed 5v from ecu PS2 connector to Bluetooth & GPS sensor.

regards

scott
Engine:Rover V8 4600cc
Vems Firmware:V1.2.38, GPS, SDcard, LCD & Dual lambdas, Wasted spark, 36-1 trigger, Cam Sync & Bluetooth serial.

http://www.vems.hu/wiki/index.php?page=MembersPage%2FScottRichmond

Offline lost

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Re: How to connect Vems with bluetooth?
« Reply #22 on: March 04, 2014, 09:33:51 pm »
do you know if ec18 pin17 on old vems v3.3 (3.5) can be connected to ground internally, with wire to ec36 pin26 GND.
On v3.6 pinout ec18/pin17 is gnd. But on v3.3 looks like there is nothing, just trace on PCB that leads to wbo heater no2 that is not installed, (this is middle pin) and it is connected to square component behind it...
I was hoping i could get GND on ec18 to use it for serial connection on car loom, to be able to remove separate rs232 cable that goes directly out of the vems box.

Offline Kamuto

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Re: How to connect Vems with bluetooth?
« Reply #23 on: March 04, 2014, 11:21:32 pm »
yes you can do it with wire
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Offline lost

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Re: How to connect Vems with bluetooth?
« Reply #24 on: March 05, 2014, 06:45:10 pm »
should i connect GND here between needles directly with small piece of wire to get gnd on ec18 pin17 or connect to gnd pin on ec36.

Does anyone knows how its conneted od v3.6 board from "factory"

Offline lost

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Re: How to connect Vems with bluetooth?
« Reply #25 on: December 23, 2014, 09:26:49 pm »
Does anyone know why it wont connect over bluetooth when bt adapter  speed in set to 115200 (AT+BAUD8)
It works fine on 19200...

Anyone has BT that works higher than 19200bps ?

Offline VEMS

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Re: How to connect Vems with bluetooth?
« Reply #26 on: December 29, 2014, 09:39:42 am »
Hello Lost,

BT adaptor does not support on the fly baudrate changes, therefore only 19200 is supported.

Best regards, Dave