Carkit / Navigation / Radio Mute

[LumpiStefan]

Hello friends.

Long time after planning to build my own Car Kit, at least i orderd yesterday an original Car Kit from O2.... :roll:

Not having received it, i´ve got some questions about it. ....

I´d like to connect a GPS mouse to it and will use my TomTom-Software with it.
Wiring the GPS should not be a problem since FVH did such great reverse Engineering... (Thanks a lot for it)
My Question is now about Radio Mute / Speaker output....
I´ve got 2 input Systems at my Radio. one for Telephone and one for NavigationSystem....
Where do i connect the car kit now? I think, i can do only once of it, or?
What will happen, when i use the mute-connector for phone on radio-side? Will it stop the Radio on every output of the Tomtom? Will it only mute the radio when a call comes in?
What are you´re experiences?
Glad about every answer....

Regards


Stefan

[LumpiStefan]

Come on guys....

Where are your answers?
I know there are some people using the Car KIt, and i think they use the Navigation function too....
So plz geave me some tips....

Regards

Stefan

[se0805]

Yes,

Also using the XDA carkit. I found the radio mute function very disappointing: it is triggered by a variety of events (screen tapping, navigation output, GSM basestation handover etc). Finally decided not to connect the radio mute to the car stereo.

If you have a line in port on your radio/cd, you can profit from good quality mp3 from the xda without using the mute cable. Also connect the carkit speaker, parallel to the line-in.

[FVH]

I have taken a closer look at how the radio mute works. It quiet easy, if what ever signal (beep, voice, music or what ever) is sent to the XDA speaker, it will trigger the mute signal.

The mute wire is pulled to either ground or VCC (i can´t remember which one, it´s been to long...) as long as there is audio output. When connecting it to my radio (Renault Laguna) I found it works the opposit to what you would expect: no signal--> no radio ; voice or telephone --> radio on.

SOlving this is easy, just get a small relay (make sure it power usage is low, specs can be found in the Carkit manual) and connect it to the mute signal. Use the switched contact to create an inverted signal.

Good luck,

Francois

[Anonymous]

@FVH
your wrote: 'The mute wire is pulled.....as long as there is audio output.'

The mute wire is also pulled as long the GPS Software of TOMTOM is active.

Any idea how to fix it?

THX
Marlboro

[LumpiStefan]

@FVH
your wrote: 'The mute wire is pulled.....as long as there is audio output.'

The mute wire is also pulled as long the GPS Software of TOMTOM is active.

Any idea how to fix it?

THX
Marlboro

In my case this isn´t so.
Mute turns on, when audio ouptut is from Tomtom or anything else. After this, it turns on Radio again.

Regards

Stefan

[charlie1234]

I also have the same problem:
As soon as the GPS Add-On of TomTom starts, Mute of the O2 Car Kit is switched and the radio keeps silent until the GPS Add-On is terminated.

Any idea how to solve this???

Thanx,
Charlie

[FVH]

I do see the problems as described, mute works correctly, even when navigating.

MAYBE this is your problem:
----------------------------------
When I put the XDA in the cradle and the GPS is switched on it looks like that the amplifier is switched on. You can hear this by listening to the noise that produced. It sounds a lot like RS-232 interferance.

I solved this by pressing the RED phone switch once or twice until you hear a beep comming from the XDA. This first legitemate sound correctly mutes the amplifier and from that moment on the carkit works like it should.

Try it and let me know,

francois