Someone here has be be able to crack this HDRadio for the car!

**Kamakazie2** · 01-23-2007, 02:49 PM

Originally Posted by DaveDog

Ok the other IC on the main PCB is a BD3805F , that is a 4 channel audio controller, must be a switcher for the iPod interface, it's controlled via a I2C bus, so what do you wanna bet the communication between the car interface PCB and the main PCB is also I2C ?

VERY INTERESTING.. do i also smell Optical out?

**Kamakazie2** · 01-23-2007, 02:51 PM

Originally Posted by DaveDog

Kamakazie2

Should be get this thread moved to hardware development? Seems like that's where it really belongs.

I agree.. i will put in a request

updated 1st post

**DarquePervert** · 01-23-2007, 03:49 PM

Originally Posted by DaveDog

Kamakazie2

Should be get this thread moved to hardware development? Seems like that's where it really belongs.

Done.

**sama** · 01-24-2007, 06:13 AM

Originally Posted by Kamakazie2

I was thinking the exact same thing!

Were all set to go, just waiting now for the ibus adapter to get here.

I found out how to get the ibus working without the ibus. I spoke with the guys on hackthe ibus and they confirmed the hook up goes like this:
12v pin: Give 12v+ to the Ibus interface and the DICE unit
Ibus pin: Give 12v+ with 1kohm resistor to the Ibus and DICE unit
Gnd: Ground to both Ibus interface and DICE unit

http://www.mp3car.com/vbulletin/show...6&postcount=86

found that post

**Kamakazie2** · 01-24-2007, 08:05 AM

Originally Posted by sama

http://www.mp3car.com/vbulletin/show...6&postcount=86

found that post

much appreciated.. I just looked at my cdrom cable and I have 4 independent wires.. however I will doublecheck. that would have been horrible!

**sama** · 01-24-2007, 11:35 AM

I wouldn't worry too much, the car is very reslient...

I had a short on a circuit for the ibus lines, and it was fine. I took it off right away though.

I even once put the battery terminals the wrong way around once, after checking it 3 times... I don't knwo what happened to me, I think I took too much medicine or something. Anyway, I got off lightly with only the FM antenna amplifier blowing up.

**Kamakazie2** · 01-24-2007, 12:36 PM

Originally Posted by sama

I wouldn't worry too much, the car is very reslient...

I had a short on a circuit for the ibus lines, and it was fine. I took it off right away though.

I even once put the battery terminals the wrong way around once, after checking it 3 times... I don't knwo what happened to me, I think I took too much medicine or something. Anyway, I got off lightly with only the FM antenna amplifier blowing up.

Just try explaining that to your dealer..

My Blinkers, windows, a/c, radio, and cd changer dont work...

**DaveDog** · 01-24-2007, 06:40 PM

Had a chat with mitchjs last night, basically asking him if it was worth going down the path of decoding the I2C bus to perhaps eliminate the need for the ibus/usb converter, and having a I2C/USB direct interface. He thought the cost wouldn't be much less and that the path we are currently following will be the easiest.

**Kamakazie2** · 01-24-2007, 09:26 PM

Originally Posted by DaveDog

Had a chat with mitchjs last night, basically asking him if it was worth going down the path of decoding the I2C bus to perhaps eliminate the need for the ibus/usb converter, and having a I2C/USB direct interface. He thought the cost wouldn't be much less and that the path we are currently following will be the easiest.

Yeah he PMd me last night. I think that we are good the way we have done it
1. We have a stable interface
2. Its has Roadrunner support
3. Its possible that we might be able to add other devices on later