MS3 CAN Bus + trans controller and AEM uego

[hellhaunter]

Hello

Have anyone tried the AEM X-Series OBDII Wideband UEGO part 30-0334 ? and still retain the communication betwen ms3 and trans controller over CAN bus

It seems that this would work since you can config CAN output 11bit/29bit and rate 250/500 kbits.

Best Regards, Mattias

[jsmcortina]

You can't run 250kbps and 500kbps at the same time.

James

[dr.mike]

The 30-0333 / 30-0334 don't seem to be the right choice for MS. They emulate a CPU. and respond to PID requests ( mostly PID $24 WBO2 )

I can probably mod up a 30-0300 with code to match the MS3 requirements, if somebody can point me at them. The bitrate and address size ( 11 vs 29 bits ) can be set to whatever.

I did the original work to make the X-series gauges work with HPTuners and EFILive.

[Reverant]

The 30-0300 already works at 500KBps.

[Janz99]

Bringing this thread back just to clarify. I have an ms3pro and using a micro trans controller via canbus.

I was trying to hook up an aem wideband via canbus but I can't seem to make both work at the same time (trans controller or wideband).

If I enable the can ego it gives me an error that I need to disable the MS 29bit can. If I disable that it can't find the can1 device which is my trans controller.

Am I doing some wrong or can you not run an aem WB and the trans controller over the same canbus network?

[jsmcortina]

Unfortunately you cannot use regular 29bit CAN at the same time as "Megasquirt" 29bit CAN.

I have considered extending the transmission code to allow it to communicate with an MS3 using standard 11bit header messages. This would allow you to enable the AEM wideband at the same time, but you would have to connect the directly the serial port on the Microsquirt to tune it as "CAN passthrough" requires Megasquirt specific messaging on the bus.

James

[jsmcortina]

I've added 11bit CAN broadcasting to the Trans controller and made it possible to disable 29bit Megasquirt CAN, so it should be possible for it to co-exist with an AEM uego now. As mentioned above you would have to tune the trans controller with a direct serial cable.

James

[Janz99]

By co-exist do you mean you could still view all the sensory information in TS from the trans controller, but in order to make changes you'd need to directly connect to it?

If that's the case, I could live with that. At this point I'm not making many changes to the trans if any.

[jsmcortina]

Any time you are 'talking' to the TCU while your tuning computer is plugged into the ECU it automatically uses 29bit 'CAN passthrough' to collect the data. That won't work once you disable Megasquirt CAN.
The sensor data would be viewable on the ECU only by configuring CAN Receiving for each channel you want to see, this capability is what's new.

James