I'm loooking for more information about the DIY Car-handsfree at
http://wiki.xda-developers.com/wiki/Connectors for building a single connector for QTEK/XDA in-car solution.
audio out => build-in car radio input
mic => external mic
rs232 or USB => command the internal car bus (e.g; I-bus in a BMW http://www.openbmw.org/bus/ ) or GPS
power => charging the device
Anyone has already explored theses topics.
Olivier
On the http://wiki.xda-developers.com/wiki/Connectors page, there is already a schematic for making a connector which has power, microphone and speakers for handsfree, so all you would need is to then connect the serial lines to the correct plug for your BMW's car bus
Related
Hi to all hardware developers!
I am trying connect my MDAIII to car audio aux input as simple handsfree device (to hear voice or navigation commands in loudspeakers). For this I need simple logical information is phone in talk mode or not. I cannot find this signal in connector when is serial and usb port , +5V power supply and mic/audio output. In serial port is also no activity when phone is in active state, when talking.
When I can find technical information on COM port in Windows mobile 2003 system?
How can I do that? Thanks in advance for any answer.
Andreas
Hi,
in http://forum.xda-developers.com/viewtopic.php?t=16096
s93ncer wrote:
What pin is that that gives +5V when in a call on the XDAII?
Pin 12 on an XDA II goes to a positive voltage when in a call.
I am trying control voltage in my MDA3 on pin 12 but is always low 0,1V.
And also in COM port I can't see any activity during calls.
Is there a solution to check phone when in use?
Andreas
I have a monitor with HDMI input but it doesn't have a internal speaker.
I want to get sound via my analog external speaker.
What can i do for this?
Thanks.
If your monitor doesn't have an analog audio output, AFAIK it's not possible to get an audio signal from Atrix's audio connector.
A good option may be a bluetooth AD2P stereo audio connection (the audio would out through bluetooth not HDMI) but you would need something which supports it.
Sry for my crappy english.
There are some adapter boxes and switches which do this, I know some Xbox users who needed a similar thing but it wasn't that interesting to me at the time, so I can only say look it up in xbox forums, sorry.
headphone out would be cheap and easy, but and extra thing to plug in.
Just plugged my external speaker to 3.5" audio output and it works.
I did not think at all thats so easy
Is there any way to record stereo audio from an external source?
I want to use my phone like the line-in port of my laptop. At the moment i've managed to plug a 4 pin 3.5mm jack to 3xRCA, but this provide 2 mono-out and a mono-in (the phone recognize this as a stereo headset with built in microphone).
I wonder if is possible to obtain a stereo line in, maybe using an adaptor on the usb port.
Tnx!
any idea? or just know if it is possible or not.
Hi,
Many cars have a USB socket into which the driver / passenger can plug their MP3 devices and listen to music through the car's audio system. Can an Android phone redirect its sound to the car's USB, like it does for Bluetooth (if the car has one)?
I know this does not happen by default. But for cars that do not have BT, it would be useful if there was some application / hack which allowed me to do phone calls and listen to any media (including directions from a navigation system) by plugging the Android phone into the USB.
Theoretically, I can imagine some piece of software (not sure if an Android app can do that) that would represent itself to the car's audio system as an mp3 player, capture all audio-out of the phone, and play it as a single (continuous) mp3. When the phone does not produce any audio, it would just put silence into the generated mp3.
Thanks,
Shlomy
** Edit: Simple solution found. I have an AUX port next to the USB port in the car. Connecting the phone's earphone socket to AUX in the car (with a standard 3.5 cable) does the same thing that I wanted.
Hello,
I am making navigation system out of my android tablet, and i faced a problem that not all times i connect USB DAC, android sends audio data to USB, but rather to internal speakers (some times it does that, sometimes it does not)
Is where a simple way how to set to use USB as main audio source, and block headphones or any other audio source ?
Same apply to FM radio, i can plug headphones so it would act as antenna, but i still need audio to be rooted to USB DAC
Small support via PayPal for some one who give me the right answer
I would like to know too