AiM Dash Display install

[bigjae46]

Yeah that device should do what you want.

Another option is to wire a Gauge.S in and have it retransmit the pressures over CAN:
- https://shop.sorek.uk/products/gauge...elopment-board
- https://github.com/handmade0octopus/...retransmission
Keep in mind that if you go this route the Gauge.S will essentially be completely useless except for grabbing and retransmitting brake pressures.

The box is more expensive but at least seems to be plug and play. Gauge.S is cheaper but will require more messing around.

Edit: Actually, I have a second Gauge.S coming my way. If you want an extra cheap way to do it, I'll sell you my old one once the new one arrives. Nothing wrong with it, just wanted the newest board revision

So just need to buy Guage S and then upload the code from github? Let me know when you want to sell your old one.

[George Hill]

Is there a way to pull this data into CAN so I can log with a SoloDL?

Convert to a Solo2 DL and then you can add analog inputs. You can then monitor oil pressure and brake pressure... that's what I plan to do, amongst some other components. *Edit, I'm surprised you aren't monitoring oil psi already.

I've installed a couple brake pressure kits to wire into a datalogger and it seems like a solid option for a track car. This will give you the idea to piece your own kit together, https://www.moreheadspeedworks.com/p...-pressure-kit/

[heinzboehmer]

Is there a way to pull this data into CAN so I can log with a SoloDL?

Yeah that device should do what you want.

Another option is to wire a Gauge.S in and have it retransmit the pressures over CAN:
- https://shop.sorek.uk/products/gauge...elopment-board
- https://github.com/handmade0octopus/...retransmission
Keep in mind that if you go this route the Gauge.S will essentially be completely useless except for grabbing and retransmitting brake pressures.

The box is more expensive but at least seems to be plug and play. Gauge.S is cheaper but will require more messing around.

Edit: Actually, I have a second Gauge.S coming my way. If you want an extra cheap way to do it, I'll sell you my old one once the new one arrives. Nothing wrong with it, just wanted the newest board revision

[t3ddftw]

Is there a way to pull this data into CAN so I can log with a SoloDL?

The device Heinz linked would pull that data over to CAN, but otherwise you’re on your own.

[bigjae46]

Been experimenting with this so will add one more thing in case it's useful for anyone else.

There is no way to get brake pressure on CAN from the MK60, even after sending the DS2 command in the previous post. There's some references online to brake pressure being available at CAN ID 0x1F8, but it looks like only AWD cars will do this. The DSC module on AWD cars is different to the MK60, so unless you write some custom MK60 firmware, you're stuck with reading the pressures from D bus.

I was also just made aware of this thing: https://www.airventdisplay.no/en/onl...60-detail.html

Seems useful pretty useful.

Is there a way to pull this data into CAN so I can log with a SoloDL?

[heinzboehmer]

Been experimenting with this so will add one more thing in case it's useful for anyone else.

There is no way to get brake pressure on CAN from the MK60, even after sending the DS2 command in the previous post. There's some references online to brake pressure being available at CAN ID 0x1F8, but it looks like only AWD cars will do this. The DSC module on AWD cars is different to the MK60, so unless you write some custom MK60 firmware, you're stuck with reading the pressures from D bus.

I was also just made aware of this thing: https://www.airventdisplay.no/en/onl...60-detail.html

Seems useful pretty useful.

[heinzboehmer]

Okay can confirm that brake pressures are available on D bus (not K bus) if you request them from the MK60. The following DS2 command is what you need to send out:

B8 29 F1 02 21 06 45

You'll get a response with 15 bytes of data. Front brake pressure is 2 bytes long at data offset 6 and rear brake pressure is 2 bytes long at data offset 8.

Here's my Gauge.S showing the pressures:



Cross checked with Inpa and they matched.

Note: Raw pressure values are in kPa and are int16_t not uint16_t (i.e. they're in two's complement)

[sda2]

To access KBUS modules without the cluster, you can add "MODE=KBUS" to your obd.ini file.



I personally would completely dismantle any cheap non M3 cluster with coding index 8, code it to M3, mount it to the backside and then read all the important information via CAN.

Seeing you are German, the M3 kph cluster you can sell afterwards will cross finance a lot of other goodies

[t3ddftw]

Not necessarily, I did an INPA brake fluid flush on my MK60 without any connection to K-line. Only the can bus was connected to transfer information.
I also revisited the connector pinout of the MK60 as I did not recall K-Line from doing the conversion. There's no pin for K-Line.

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The EDIABAS API (what's under the INPA hood) is written entirely with the DS2 protocol in mind, which is exclusively used on the D-Bus (K-Line). As Heinz points out, CAN isn't even accessible from the OBD-II port.

CAN is used for high speed inter-module communication between the cluster, transmission controller, DME and DSC module.

-Ted

[heinzboehmer]

I also revisited the connector pinout of the MK60 as I did not recall K-Line from doing the conversion. There's no pin for K-Line.

BMW calls it TXD in their wiring diagrams. Pin 2 in the pinout Ted posted.

Here's the entire TXD1 (goes to pin 8 on the OBD II plug) bus:


There's also a TXD2 bus, but that just goes from pin 7 on the OBD II plug to the DME and transmission control module:



The two are bridged together by some jumpers on the OBD II plug cap.

[Altaran]

My configuration is specific to my car, not much help on yours to be honest.

I am running a few metrics from the standard AIM configuration on CAN1, and then picking up alot of metrics on CAN2. This is the only way to do it, in my opinion. I have a full list of some CAN ID's I can share in this thread that may be of use.

I have a custom module in place that is emulating the stock cluster, satisfying the MK60/SMG, as well as converting some KBUS/DBUS metrics to CAN.

That would be good for the other guys considering it in the future.
I changed my Aim Can Bus directly with the Ecumaster preset, since I run an EMU Black. It gives me a whole lot of additional things to grab. Though the BMW preset works as well for the info the stock ECU distributes on the bus.

What is the custom module you are running for the K-/D-Bus translation? Is this obtainable somewhere?

For the time being, all lighting options work for me using analog inputs. I am only waiting for the mounting fixture delivery and I still have to do the fuel tank sensor measurements, then it's good to go.

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[Altaran]

I think the big disconnect is that the industry refers to BMWs "D-Bus" as K-Line / K-Bus. BMW couldn't call it that because they decided to create an unrelated "Karosserie" Bus to simplify comms between the different body ECUs.

Anyhow, dug this up from the interwebs:


If INPA sees these values, then it's 100% available on the D-Bus.

I would guess that this DS2 command would give you the raw sensor data from the MK60:

56 05 90 00 C3

Logging the D-Bus while watching the values is going to be your best bet at deciphering it

-Ted

Not necessarily, I did an INPA brake fluid flush on my MK60 without any connection to K-line. Only the can bus was connected to transfer information.
I also revisited the connector pinout of the MK60 as I did not recall K-Line from doing the conversion. There's no pin for K-Line.

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[heinzboehmer]

Thanks Ted! I'll give it a shot soon

[t3ddftw]

Ah I'm kinda just grabbing info from this thread to add to my own datalogger (Gauge.S). I'm not sure if the AiM products can log values from D bus, but Gauge.S can. So, if brake pressure is on D bus, it should be simple to add.

I think the big disconnect is that the industry refers to BMWs "D-Bus" as K-Line / K-Bus. BMW couldn't call it that because they decided to create an unrelated "Karosserie" Bus to simplify comms between the different body ECUs.

Anyhow, dug this up from the interwebs:


If INPA sees these values, then it's 100% available on the D-Bus.

I would guess that this DS2 command would give you the raw sensor data from the MK60:

56 05 90 00 C3

Logging the D-Bus while watching the values is going to be your best bet at deciphering it

-Ted

[heinzboehmer]

Maybe I missed it what do you have in mind?

I really want to start looking at brake pressure data to further develop my skills...would be outstanding if I could get that through my AiM SoloDL without adding an additional sensor (reliability and weight).

Ah I'm kinda just grabbing info from this thread to add to my own datalogger (Gauge.S). I'm not sure if the AiM products can log values from D bus, but Gauge.S can. So, if brake pressure is on D bus, it should be simple to add.