BlueBus: A fully integrated A2DP Bluetooth solution

[t3ddftw]

I didn't know what the root cause for this bug was until now. Amusing!

The I/K-Bus spec says that the maximum frame size is 32 bytes, but being that so many different OEMs were part of making modules for these cars, they didn't all understand or care about that "limitation". Of course, the guy who sat down and wrote the code for the IHKA DID read that and probably just `memcpy(frame, buffer, sizeof(buffer));`

[heinzboehmer]

What PSUEng said is correct -- IHKAs made after 09/2003 do not have this bug. The problem is that the LSZ I/O status response message, to make the comfort blinkers work, is longer than they programmed the IHKA to accept which results in undefined behavior.

I didn't know what the root cause for this bug was until now. Amusing!

[t3ddftw]

Thanks for your feedback!

I’ll get my car’s VO to match its actual equipment and if the issue persists, get in touch with Ted for proper support. I’ll keep you all posted in case someone else has the same problem.

What PSUEng said is correct -- IHKAs made after 09/2003 do not have this bug. The problem is that the LSZ I/O status response message, to make the comfort blinkers work, is longer than they programmed the IHKA to accept which results in undefined behavior.

So just got mine, installed it on my 04 M3 Cabrio, bluetooth works great. I can't find the harness for the phone connector though. Anyone have tips for cabrio owners? Car is pre wired for phone.

Does it have the oval mirror or the mirror with the SOS button? If it has the SOS button, then the connector is probably already connected to the BMW Assist Module (TCU):




Thanks!
-Ted

[fuddy]

So just got mine, installed it on my 04 M3 Cabrio, bluetooth works great. I can't find the harness for the phone connector though. Anyone have tips for cabrio owners? Car is pre wired for phone.

[Der_Spanier]

I had the same issue in my 2003 M3 and if I recall, Ted advised me to either 1] turn off triple blink or 2] upgrade to the later model HVAC control module. I upgraded the module and no problem since. Contact Ted and he'll give you proper direction; great person to work with.

Thanks for your feedback!

I’ll get my car’s VO to match its actual equipment and if the issue persists, get in touch with Ted for proper support. I’ll keep you all posted in case someone else has the same problem.

[PSUEng]

I very recently retrofitted a CD53 and a Bluebus to my E46 325ti Compact (it originally came with a C43 Reverse radio).

Ever since, my HVAC randomly shuts off. Sometimes it won’t happen at all, sometimes it’ll do it twice in 30 min. It happens mostly when the radio is in Bluebus mode, though yesterday it happened with the radio completely off.

I’m still to update the car’s VO to tell it that it no longer has a C43 radio, but a CD53 instead. Not sure if that’s relevant.

I had the same issue in my 2003 M3 and if I recall, Ted advised me to either 1] turn off triple blink or 2] upgrade to the later model HVAC control module. I upgraded the module and no problem since. Contact Ted and he'll give you proper direction; great person to work with.

[Der_Spanier]

I very recently retrofitted a CD53 and a Bluebus to my E46 325ti Compact (it originally came with a C43 Reverse radio).

Ever since, my HVAC randomly shuts off. Sometimes it won’t happen at all, sometimes it’ll do it twice in 30 min. It happens mostly when the radio is in Bluebus mode, though yesterday it happened with the radio completely off.

I’m still to update the car’s VO to tell it that it no longer has a C43 radio, but a CD53 instead. Not sure if that’s relevant.

[kryptokatalyst]

Any news when the next batch will ship? t3ddftw

Thanks!!! Looking forward to enjoying the Bluebus on my 2nd E46…

Also interested in when the next batch would ship.

[sev]

I think it would, but I am not familiar enough with the CID to know.

Replacing the factory screen is something I have been looking at since supply for good screens is drying up. I haven't found a suitable screen -- it seems like this sector is so tight-nit with the OEMs that they don't put a lot of effort into other customers.



I hope you've figured this out or emails me by now -- sorry for missing this! the fix is to remove the unit from the case, locate the "RECOVERY" jumper and connect it to both pins. Once you reconnect it to USB, the green light will flash, indicating that it is ready to accept software.

Shoot me an email for more guidance -- [email protected]


Sort of -- I have all but written off the Carlinkit adapter as a viable option because it's just shit. There's a huge lag while on wireless carplay that makes the streaming experience extremely painful. Essentially, you'll pause a song but it'll continue playing for ~1.5 seconds. You can read more here: https://docs.google.com/document/d/1...mP-5J-H6VI/pub

The other fellow I am working with has managed to get Android Auto working on the bare metal of the Raspberry Pi, so I'm hoping to do something similar with Carplay. The problem, of course, is that any implementations are closely guarded by Apple. I will be at least finishing the hardware side of things sometime this month.

Thanks!
-Ted

I find that the lag isnt a big deal in real world experience. I have an android head unit in my other e46 with one of these types of adaptors. Mine is a zbox. They lag a little bit but work just fine.

[0-60motorsports]

Still have the issue with the caller hearing his echo. Anyone have a similar issue and what did you do to solve it.

[BTB]

Any news when the next batch will ship? t3ddftw

Thanks!!! Looking forward to enjoying the Bluebus on my 2nd E46…

+1

Ordered mine on the 4th. So stoked to get this installed!!

[Der_Spanier]

Any news when the next batch will ship? t3ddftw

Thanks!!! Looking forward to enjoying the Bluebus on my 2nd E46…

[t3ddftw]

Thanks, I'll try that option. That would shut it but it'll pop back up when I change tracks, no?

I just purchased a used Z4M and was thinking about cobbling something together and replacing the Sharp 400x240 LVDS LCD with something higher res in the same form factor and using a Lattice iCE40 or similar small FPGA to mux and scale the stock input. Glad to hear you're working on a CarPlay solution and I don't have to start another project I will not finish .

I think it would, but I am not familiar enough with the CID to know.

Replacing the factory screen is something I have been looking at since supply for good screens is drying up. I haven't found a suitable screen -- it seems like this sector is so tight-nit with the OEMs that they don't put a lot of effort into other customers.

Hopefully you can help. I upgraded to 1.1.30. the upgrade seemed to go well. but the multi flash wasnt working. The unit had a green light flashing. I reflashed to 1.1.18. After the green light was on constantly. All seemed to work when connected to the car (E46). I then tried to flash 1.1.30. When the it was flashing the firmware (after the erase) the green progress bar started at about 80%, then completed the flash quickly. Now the green light on the unit is out. When I disconnect the USB cable, then reconnect, the green light on the unit flashes momentarily then stays out. When I try to connect to the Firmware tool, It finds COM5, but when it tries to connect then I get "ERROR: Failed to get a response within 5 seconds" (I tried 2 computers and 5 cables) I tried Putty (windows 10 64 bit) Serial, COM5, 115200. The terminal window opens with a small solid green box, but when I type nothing happens. (I made sure the terminal wind was the active window). Any help apperciated. If this has been discussed please direct me. Yes I tried searching using multiple terms.

I hope you've figured this out or emails me by now -- sorry for missing this! the fix is to remove the unit from the case, locate the "RECOVERY" jumper and connect it to both pins. Once you reconnect it to USB, the green light will flash, indicating that it is ready to accept software.

Shoot me an email for more guidance -- [email protected]

Just curious if there's any update on your CarPlay module - thanks! t3ddftw

Sort of -- I have all but written off the Carlinkit adapter as a viable option because it's just shit. There's a huge lag while on wireless carplay that makes the streaming experience extremely painful. Essentially, you'll pause a song but it'll continue playing for ~1.5 seconds. You can read more here: https://docs.google.com/document/d/1...mP-5J-H6VI/pub

The other fellow I am working with has managed to get Android Auto working on the bare metal of the Raspberry Pi, so I'm hoping to do something similar with Carplay. The problem, of course, is that any implementations are closely guarded by Apple. I will be at least finishing the hardware side of things sometime this month.

Thanks!
-Ted

[mtpktz]

Just curious if there's any update on your CarPlay module - thanks! t3ddftw

[slawless]

Hopefully you can help. I upgraded to 1.1.30. the upgrade seemed to go well. but the multi flash wasnt working. The unit had a green light flashing. I reflashed to 1.1.18. After the green light was on constantly. All seemed to work when connected to the car (E46). I then tried to flash 1.1.30. When the it was flashing the firmware (after the erase) the green progress bar started at about 80%, then completed the flash quickly. Now the green light on the unit is out. When I disconnect the USB cable, then reconnect, the green light on the unit flashes momentarily then stays out. When I try to connect to the Firmware tool, It finds COM5, but when it tries to connect then I get "ERROR: Failed to get a response within 5 seconds" (I tried 2 computers and 5 cables) I tried Putty (windows 10 64 bit) Serial, COM5, 115200. The terminal window opens with a small solid green box, but when I type nothing happens. (I made sure the terminal wind was the active window). Any help apperciated. If this has been discussed please direct me. Yes I tried searching using multiple terms.