Carminat Bluetooth Cd Aux Pinout
BackgroundWhy, why, why isn't there an AUX input on my car stereo from 2007?Yes 2007 was before the big era of smartphones, but everyone owned a couple of dirt cheap mp3 players and iPod was a big thing.The HU that my car is fitted with has two super retro 8-pin DIN-connections on the back. One of which is for connecting a CD-changer 'CD-CHGR' that you could have installed in the boot of the car - but who uses CDs these days?It didn't take allot of research to find out there is already a that lets you add an AUX to you HU-xxxx. Set BUSY to low for 1000 ms to make the HU run its initialization routine. The HU init routine starts by sending three bytes: 0x07 0x1A 0xEE.
Then two bytes per optional connection device (30 of them), the first byte being the predefined ID of the device (ex. CD-CHGR = 0x8E), followed by either an empty byte 0xFF, if the device is not connected, or the answering ID of the device (CD-CHGR = 0xEE)Example: External CD-CHGR: ID = 0x8E and its return ID is 0xEEExample: Internal CD-player: ID = 0x80 and its return ID is 0x86See list of predefined addresses and returns on bottom of. I.e. F1 challenge 99-02 download.
View and Download Renault Carminat user manual online. Bluetooth dvd nav-com system. Carminat Car Navigation system pdf manual download. Pinout of Car Audio ISO connectorISO 10487 is a standard connector that is used in the radio unit (head unit). There are contacts for the power supply off / on (controlled by the ignition key), the speakers and automatic antenna.
The code I wrote (below) is well documented and fairly easy to understand.I had a hard time getting the function 'SendByteToMelbus(uint8t byteToSend)' to work.It turned out that the Arduino functions: digitalWrite(MELBUSDATA, HIGH); and LOW are too slow for this code, (MELBUS runs at 10-12MHz) and CLK had returned to high state before Databit was changed.To solve this, I had to go back to the old AVR-GCC technique and usePORTD = (1. You really helped me out there with some things I was struggling to do with my emulator (doing IO the AVR way + a typo in my CD-Changer address).Issues with your code are mostly the mixed use of Arduino and AVR pin numbers: For your Nano these seem to match, but on my Sparkfun Pro Micro (Clone), the numbers are off (i.e. Digital Pin 2 is PD0/INT0).One question though: You are supplying your Arduino via the MELBUS 12V run line - is that really safe?In case you're interested, my code is on github (But it's way more bloated than yours, and probably still more broken;-). Hello,nice job! Tried to use your hack on another melbus device which is mitsu's product called w142 (PH3000).
It has a 13-pin cd changer socket like those used in Volvo Nav units. Pinout is the same for melbus (pins 11-13) data and audio (pins 1-4) signals.
Strange things happen though: the unit not only does not want to switch to cd changer, but also the display disappears and the switches on front panel of the unit do not work. Otherwise, the unit plays normally - with no cd it plays the radio and when i give it a cd it starts playback with no problems. I'll try to investigate further, there has to be a way to make your hack work on mistu's also!:). AnonymousI am running this code on UNO. I had to do a number of changes to the code to get it running. However, none of these changes was due to the different Arduino platform, but due to a different HU (Mitsubishi, not Volvo) and due to enhancements such as displaying track number and run time. Some changes also might have been necessary due to bugs in the original code, but I am not sure about this, because I do not have a Volvo HU to test it.
So it might be that the melbus protocol is just implemented slightly different on those HUs. For example, I had to change the interrupt edge mode from RISING to FALLING. And for text display I had to change SendByteToMelbus such that it releases the data line between two consecutive transmissions. After all my implementation is still not perfectly reliable, because from time to time the bus gets reset by the HU for no obvious reason. AnonymousI was able to improve stability by adding 'EIFR = (1. Thank you so much Karl, the modified code worked no problem on my Volvo V40 HU-655. I was a little confused by the lack of a free DIN socket in the back of my HU until I realised that one of the DIN cables is an unused factory installed loom that runs to the back of the car ready for an aftermarket CD changer to be installed.
I was also wondering if I would still be able to use the radio, tape, CD as there is no on/off for the Arduino. But not to worry, all of these still worked and the CD button on the HU cycles between the Arduino Aux-In and the HU CD player. Many thanks again. AnonymousI'm having some trouble. I have the HU working well (HU-801 Volvo S80) in CD CHGR mode but it will always fail after a short while. The CD and Track numbers will start to change sporadically and eventually I get a 'CD LOAD CARTRIDGE' message that stays in place. When this is here, I cannot adjust volume (but the music still plays from AUX).
After cycling the key, the CD CHGR mode will disappear until eventually it will pop back up (could take many key cycles and days later). Any thoughts? Code problem? Connection issue?
AnonymousHi Karl,I have been meaning to build one of these for ages. All the bits arrived some time ago, but no time to do anything about it. I stole some time away from the family over our Christmas holidays, programmed up the Arduino and built up the connectors. Actually, I built an extension lead from the back of the HU 803 to just behind the removable panel at the side of the footwell, to enable easy connection without having to remove all the climate control and radio system. After a little bit of fiddling, lo and behold, IT WORKS!!! I am so grateful to you for sharing all this info. Hope you and yours have an excellent 2017 and beyond.RegardsDoc BJ.
Hi, I posted here the other day, but either it failed, or it was removed. Let's try again -I just wanted to give thanks to everybody that shared their knowledge about MELBUS and made the AUX input possible. I built one myself and used Karl's code and modified it a bit.
I put it on github if anyone is interested. It supports showing the cd# and track# and you can change track by pressing the buttons on the steering wheel/radio. It can also trigger MASTER mode, but I didn't know what to do with that. There is also a simple schematics of how to connect it to the arduino.Hope that you don't mind using parts of your code Karl!Here is the link: https://github.com/visualapproach/Volvo-melbus.git/Thomas. Karl,After the ENUM message from the HU, it will request the cartridge info with the 3 byte INFO message.
You need to reply with the the six info bytes. After that the HU will send the 5 byte PLAY massage to the CD-CHGR that requires the 9 byte reply. Only with this sequence you can make the 'CD ERROR' go away. CD and track number will be displayed as set in the 9 byte PLAY reply.
Renault Tuner List Aux
I use an RS232 link between this gateway controller and the MP3 player to transfer these numbers from the player to gateway controller. Hence they will be automatically forwarded to the HU and the track and CD control buttons on th HU and steering wheel start making sense.Did anyone find out how to transfer text to the HU (track artist, title.)? It should be possible, the RDS is doing it. DmitryJust to share my experience - my S60 is equipped with RTI system, which is hooked up to HU - exactly to the same DIN8 socket which is to be used in the described 'hack'. If one wants to have AUX with RTI still operative then using DIN8 socket of the HU's back is not a good idea.But installation of the Karl's system proved to be even easier - RTI module (in the trunk) has DIN13 socket for 'daisy chaining' of CD Changer and all one has to do is just make the cable with this DIN13 instead of DIN8. And it's much easier (for me- at least) to plug this cable into the RTI back side socket. Getting there - instead of taking out climate and HU units - is rather simple thing.Of course, one needs to pull the audio cable from the trunk to the central console or tunnel compartment, or - under the doors' mats - this may be an issue (not that big one for me).
If a car doesn't have RTI but RTI-prepared (all wiring/harnesses are in place) then the whole thing is even more simple.The pinout of DIN13 comes from the mentioned 12Audio GND 1RUN 10Data 13Busy 11Audio Left 2Audio Right 4Arduino GND either 1 or plug 'shell' (or both). AnonymousHello,I have very strange problem here, have tried all the codes found in this thread, all of them does the same. If im using AC-DC 12V power supply at home to power up my Volvo HU-603 everything works just fine every time i turn in on, but if i connect my HU in the car everything messes up i can't switch to cd-chngr, even CD disappears, i don't even start the car. If im switching ignition key on-off-on several times, i did get one time when cd-chngr lighted up, but one more time off-on and its gone.I'm using arduino nano + DC-DC 5V converter to power it up from car battery.Any suggestions what could be wrong?
Found this and thought I'd build it for my Volvo hu-615. Looking at the schematics, I'm a little confused. There are 2 grounds, it seems: Pin 2 (audio cable screen) and the Din 8 shield ground. Which connects where?That is,what connects to the Arduino Mini Ground pin?and what connects to the audio jack ground?This is what I've figured out so far:on Arduino mini:Pin D3 = din pin 1 (clock)Pin D4 = din pin pin 4 (data)Pin D5 = din pin 5 (busy)VIN = din pin 3 (run/12v)G =??? What connects to the Arduino mini ground pin?
Din pin 2 (audio cable screen) or din ground shield?on audio jack:Left audio (tip) = din pin 6Right audio (ring) = din pin 7Ground (sleeve) = which? Din pin 2 (audio cable screen) or din ground shield?Thanks for your thoughts. I think I solved the 'CD ERROR' problem.I put a mini buck regulator between the ACC and the Arduino and the 'CD ERROR' went away.The voltage in a car varies between 12-14.5 volts but the Arduino is specified for Max 12volts.I set the regulator to 10 Volts sins it is very stable 2 volts below Vin.I also added a CSR8645 to the project to get full Bluetooth functionality.Great projects! If anyone would be kind to share the code for MD changer instead of a CD changer I would be very grateful.I tried to hack the code but I'm not good enough at C.
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Many threads have appeared discussing how to add aux to a base Prius radio. Most approaches involve adding a 3rd party device to the CD changer connector on the back of the radio.
As an alternative I opted to upgrade the radio to add aux. My 2007 base Prius comes with factory radio 51830 which does not have aux nor can it play MP3s. I purchased radio model 51824 from a salvage company for just over $100.
This is similar to the base radio but has aux and MP3 capability. I used instructions on PriusChat to remove the existing radio which was relatively easy. I discovered the base Prius has no aux wiring whatsoever so this turned out to be a challenge.The first attachment shows a photo of the back of the Prius radio with the 20 pin connector which came with the upgraded radio. The wires are clipped because it was easier for the salvage compary to do this than pull out the connectors. By examining Prius radio wiring diagrams I determined which wires needed to be added for aux (shown in photo). I needed to connect a 3.5mm stereo cable to the 20 pin connector.
To do this I used 4 of the pins in the clipped connector which came with the salvage radio. When soldering the pins to the 3.5mm cable, the left audio channel goes to the tip of the 3.5 mm connector; the right audio channel goes to the connector next to the 3.5 mm tip, and audio ground goes furthest from the 3.5mm tip. The aux sense input just needs to be connected to audio ground.
Carminat Bluetooth Cd Aux Pinout Cable
The next attachment shows a photo of the 20 pin connector in my Prius after adding the 4 aux pins. Yes its ugly but connections are solid. The wire connecting aux sense to audio ground is very ugly because it was soldered in place in the dash. The last attachment shows how the 3.5mm female connector fits in the tray below the radio.The aux works fine with the salvage radio.
A message even pops up on the MFD when aux is connected. This is somewhat surprising because the base Prius MFD does not expect aux to be there. This brings me to the MP3 player. This works perfectly fine except that the MFD does not display any information about the music. There is no Title or Artist nor is there any display of play time. You can advance tracks and folders via the steering wheel controls and using the radio controls.Now for a surprise ending. It turned out the salvage radio had a problem ejecting CDs so I returned it.
By the way the company I dealt with was very good about it and even paid to ship it back. Instead of getting another radio I decided to put back the original radio and buy a 3rd party device. I will report on that endeavor soon.Edited to say photo in last attachment was taken after the original radio was put back in the car. I chose to use an upgraded Prius radio instead of aftermarket for several reasons. First, the Prius radio looks the same as the original and appears as if 'it belongs'. Second, except for adding the aux cable, installation was a simple swap of one radio for another.
Third, the steering wheel controls continue to work. Finally, the price was reasonable.Installing an aftermarket radio is certainly a good option as you have pointed out (& done) before. However I thought this would be easier for me given my installation skill level and needs. The aftermarket stereo install looks suprisingly great.i'd like to tap into the aux on the back of my radio to add my newly purchased xm radio (i have the ipod adapter, so i bought a stand alone after market xpressrc radio) - i saw the pins but i'm still a bit leery, can some kind soul tell me how i split my 1/8' aux cable to tap into the pins at the back of my radiio? I'd plan to use 4 taps (unless someone has a better suggestion) - i was originally going to run the wire to the console and drill a hole in the console - keeping it all in the dash will be much cleaner - many thanks!
Many threads have appeared discussing how to add aux to a base Prius radio. Most approaches involve adding a 3rd party device to the CD changer connector on the back of the radio. As an alternative I opted to upgrade the radio to add aux.
My 2007 base Prius comes with factory radio 51830 which does not have aux nor can it play MP3s. I purchased radio model 51824 from a salvage company for just over $100. This is similar to the base radio but has aux and MP3 capability.
I used instructions on PriusChat to remove the existing radio which was relatively easy. I discovered the base Prius has no aux wiring whatsoever so this turned out to be a challenge.The first attachment shows a photo of the back of the Prius radio with the 20 pin connector which came with the upgraded radio. The wires are clipped because it was easier for the salvage compary to do this than pull out the connectors. By examining Prius radio wiring diagrams I determined which wires needed to be added for aux (shown in photo). I needed to connect a 3.5mm stereo cable to the 20 pin connector. To do this I used 4 of the pins in the clipped connector which came with the salvage radio.
When soldering the pins to the 3.5mm cable, the left audio channel goes to the tip of the 3.5 mm connector; the right audio channel goes to the connector next to the 3.5 mm tip, and audio ground goes furthest from the 3.5mm tip. The aux sense input just needs to be connected to audio ground. The next attachment shows a photo of the 20 pin connector in my Prius after adding the 4 aux pins. Yes its ugly but connections are solid. The wire connecting aux sense to audio ground is very ugly because it was soldered in place in the dash. The last attachment shows how the 3.5mm female connector fits in the tray below the radio.The aux works fine with the salvage radio. A message even pops up on the MFD when aux is connected.
This is somewhat surprising because the base Prius MFD does not expect aux to be there. This brings me to the MP3 player. This works perfectly fine except that the MFD does not display any information about the music. There is no Title or Artist nor is there any display of play time.
You can advance tracks and folders via the steering wheel controls and using the radio controls.Now for a surprise ending. It turned out the salvage radio had a problem ejecting CDs so I returned it.
By the way the company I dealt with was very good about it and even paid to ship it back. Instead of getting another radio I decided to put back the original radio and buy a 3rd party device.
I will report on that endeavor soon.Edited to say photo in last attachment was taken after the original radio was put back in the car. I'm trying to add an AUX to my base 2008 Prius using primarily what you have explained here. What my plan has been was to wire a switch to connect the Aux Sense to ground so that I can flip it on and off, and also wire a little pannel mount female phono connector to plug things into. In theory, this all work.
However, the trouble I'm having is finding what kind of pins to buy to add to the existing connector. So that is my first question.Also, I tried just sticking a couple of wires in the holes and connecting them to see if the system would switch over to AUX even though there isn't an input wired yet, and it didn't. Do you know for sure that the Aux Sense just needs to connect to ground? Or does it speak some kind of serial language that I'll need some processing to use?Any info would be great. I'm trying to add an AUX to my base 2008 Prius using primarily what you have explained here. What my plan has been was to wire a switch to connect the Aux Sense to ground so that I can flip it on and off, and also wire a little pannel mount female phono connector to plug things into. In theory, this all work.
Ctvrnx001
However, the trouble I'm having is finding what kind of pins to buy to add to the existing connector. So that is my first question.Also, I tried just sticking a couple of wires in the holes and connecting them to see if the system would switch over to AUX even though there isn't an input wired yet, and it didn't. Do you know for sure that the Aux Sense just needs to connect to ground? Or does it speak some kind of serial language that I'll need some processing to use?Any info would be great. Click to expand.When trying to hook up the Aux in my 2007, I first tried just adding 3 pins to the connector: audio left, audio right and audio ground. This did not work.
I was forced to add a pin for Aux Sense and connect it to audio ground to get it to work. As far as the type of pins to use, I was lucky in that the salvage radio I bought had a plug in the connector so I was able to extract 4 pins with wires from it and re-use them. I honestly have no idea where you can get these pins or what you even call them.As a follow-up to Purikos question, the base radio has no Aux capability so even if you added the pins and wiring, there is no Aux button on the radio to enable it.Hope this helps. Many threads have appeared discussing how to add aux to a base Prius radio. Most approaches involve adding a 3rd party device to the CD changer connector on the back of the radio.
As an alternative I opted to upgrade the radio to add aux. My 2007 base Prius comes with factory radio 51830 which does not have aux nor can it play MP3s. I purchased radio model 51824 from a salvage company for just over $100. This is similar to the base radio but has aux and MP3 capability. I used instructions on PriusChat to remove the existing radio which was relatively easy. I discovered the base Prius has no aux wiring whatsoever so this turned out to be a challenge.The first attachment shows a photo of the back of the Prius radio with the 20 pin connector which came with the upgraded radio. The wires are clipped because it was easier for the salvage compary to do this than pull out the connectors.
By examining Prius radio wiring diagrams I determined which wires needed to be added for aux (shown in photo). I needed to connect a 3.5mm stereo cable to the 20 pin connector.
To do this I used 4 of the pins in the clipped connector which came with the salvage radio. When soldering the pins to the 3.5mm cable, the left audio channel goes to the tip of the 3.5 mm connector; the right audio channel goes to the connector next to the 3.5 mm tip, and audio ground goes furthest from the 3.5mm tip. The aux sense input just needs to be connected to audio ground. The next attachment shows a photo of the 20 pin connector in my Prius after adding the 4 aux pins. Yes its ugly but connections are solid.
The wire connecting aux sense to audio ground is very ugly because it was soldered in place in the dash. The last attachment shows how the 3.5mm female connector fits in the tray below the radio.The aux works fine with the salvage radio. A message even pops up on the MFD when aux is connected. This is somewhat surprising because the base Prius MFD does not expect aux to be there.
This brings me to the MP3 player. This works perfectly fine except that the MFD does not display any information about the music. There is no Title or Artist nor is there any display of play time. You can advance tracks and folders via the steering wheel controls and using the radio controls.Now for a surprise ending. It turned out the salvage radio had a problem ejecting CDs so I returned it. By the way the company I dealt with was very good about it and even paid to ship it back. Instead of getting another radio I decided to put back the original radio and buy a 3rd party device.
I will report on that endeavor soon.Edited to say photo in last attachment was taken after the original radio was put back in the car.