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Thread: Scion xB '06, in-dash Atom 330, Lilliput 889GL; details, pictures, links. Index: pg 1

  1. #1101
    Sheepdog rdholtz's Avatar
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    Trouble in the Music Department

    The system has run flawlessly, and route guidance from Garmin Mobile PC has been excellent. The system seems rock solid, although I think I may have way too much exhaust fan airflow in there. Better too much than too little, though.

    I've run into one puzzling thing: no sound from the PC to the head unit; there's not even a hum from it. The head unit -- which I reinstalled temporarily -- plays music fine. It correctly reads the presence of an Aux input, so that indicates the wiring is correct, but there's no sound.

    Because I was able to play output from the EeePC through the head unit, I'm making the assumption that the issue is PC-related.

    Resolution of that issue will have to wait a few days. I'm headed up to Michigan for the holidays on another shakedown cruise, this time 650 miles each way. While I'm on the road, I'll try reinstalling the sound drivers, because I notice there's no volume icon displayed.

    If that adds volume controls, but there's still no sound, I'll try adding a small amplifier. Josh's homemade pre-amp might fix it, so I'll build one of those and try it out.

    For music on the way up, I'll just plug the little iPod Nano into the head unit, and there will be tunes. But I could do that before I ever started the carPC project, so I want to get this fixed.
    .
    If just enough is really good, then too much ought to be perfect.

    2006 Scion xB with in-dash Atom & Lilliput 889GL -- Worklog at http://www.mp3car.com/vbulletin/work...res-links.html
    .

  2. #1102
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    I'm not sure how inaccessible the port is, since its in your dash. But a good check for whether its lack of signal amplification is to just pop headphones into the port and see what you get.

    My guess however is much like your initial thought. A problem with your sound drivers. Though you are clearly very competent to diagnose on your own, I'd also check where it is sending the sound (does it have a digital output that it might be bypassing the analog)


    Edit: And I liked the title. I work in a music department- there is always trouble.

  3. #1103
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    Holtz:

    for the music trouble, in case you didnt know, right click "my computer" from desktop, "manage", then "device manager". anything with driver problems usually shows up with a yellow question mark and anything with resource problems (IRQ conflicts etc) usually show up with a yellow question mark and exclamation point. Also, can scan for new hardware from that dialogue as well.

    this is all assuming you are running winxp of course.

  4. #1104
    Sheepdog rdholtz's Avatar
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    Quote Originally Posted by TFCommanderBob View Post
    I'm not sure how inaccessible the port is, since its in your dash. But a good check for whether its lack of signal amplification is to just pop headphones into the port and see what you get.

    My guess however is much like your initial thought. A problem with your sound drivers. Though you are clearly very competent to diagnose on your own, I'd also check where it is sending the sound (does it have a digital output that it might be bypassing the analog).
    Quote Originally Posted by thehump View Post
    for the music trouble, in case you didnt know, right click "my computer" from desktop, "manage", then "device manager". anything with driver problems usually shows up with a yellow question mark and anything with resource problems (IRQ conflicts etc) usually show up with a yellow question mark and exclamation point. Also, can scan for new hardware from that dialogue as well.

    this is all assuming you are running winxp of course.
    Thank you both. Yes, I'm competent to do the troubleshooting, but I always appreciate suggestions and reminders. Although I have an excellent memory, it's kinda short.

    Now that I've turned the PC around so the connections are on the passenger compartment end, they're much more accessible. ALthough working on a car in the snowy weather isn't a lot of fun, all I need to do is remove the screen froim its mount, and I'll have easy access to that sound connection. I'll take your suggestion, Bob, and plug in the headset. An alternative might be to dig out the Bluetooth headset I have and charge it up. I'll give that a shot first.

    I did check the hardware in the Device Mangler, and it seems to think everything is fine. I would have downloaded the latest drivers while I was on the road, but I had a strange problem: I downloaded the new drivers from Sprint and installed those for the Sprint wireless stick. Unfortunately, those drivers ate the NEMA ports and killed the GPS driver. After uninstalling the Sprint driver, I had a GPS again, and that was more important than Internet access. I'll see if I can get something figured out during the vacation up here. This system does have a digital out, and I may have something set up wrong. I'll chase that down.

    Overall Impressions
    Even if the carPC ends up going back south in its present condition, the system is absolutely terrific. Garmin Mobile PC works very well. Despite the very stiff suspension in the Scion, the laptop hard drive seems to easily absorb the bumps in northern roads. I think I probably have the bare minimum of hard drive cushioning installed, and this trip has caused me to consider a solid state disk much more seriously.

    Quote Originally Posted by TFCommanderBob View Post
    And I liked the title. I work in a music department- there is always trouble.
    .
    If just enough is really good, then too much ought to be perfect.

    2006 Scion xB with in-dash Atom & Lilliput 889GL -- Worklog at http://www.mp3car.com/vbulletin/work...res-links.html
    .

  5. #1105
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    Quote Originally Posted by rdholtz View Post
    I'll take your suggestion, Bob, and plug in the headset. An alternative might be to dig out the Bluetooth headset I have and charge it up. I'll give that a shot first.
    I would expect at least some kind of feedback from the line if you were plugging everything in while the speakers were live, so I sincerely doubt that to be the case. But at least you can take everything Post-PC out of the equation! Isn't a bad idea to add preamp to the line though, I've heard the PC output can be ridiculously low powered. Would give you more dynamic range with better quality at low volume levels.

  6. #1106
    Sheepdog rdholtz's Avatar
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    Quote Originally Posted by TFCommanderBob View Post
    I would expect at least some kind of feedback from the line if you were plugging everything in while the speakers were live, so I sincerely doubt that to be the case. But at least you can take everything Post-PC out of the equation! Isn't a bad idea to add preamp to the line though, I've heard the PC output can be ridiculously low powered. Would give you more dynamic range with better quality at low volume levels.
    I agree that a preamp is a good addition. I can finish this one by making four solder joints, and I brought a small electric soldering iron along.

    It occurred to me last night that I haven't checked the BIOS settings, so I'll get that done when I go out to pick up Mom and bring her back for the family gathering.

    Christmas
    I'm not a "Season's Geetings" sort of guy. I just go with "Merry (or Merrie) Christmas. [rant] I'm not interested in being politically correct -- I think political correctness is total B.S. foisted on us by whiners. Political correctness is simply mandated dishonest speech. Those who believe in political correctness need to grow up and get thicker skin. [/rant]

    So, to those who celebrate Christmas, I wish you a Merrie Christmas. To those who don't celebrate it, I wish you a Merrie Christmas anyway.
    .
    If just enough is really good, then too much ought to be perfect.

    2006 Scion xB with in-dash Atom & Lilliput 889GL -- Worklog at http://www.mp3car.com/vbulletin/work...res-links.html
    .

  7. #1107
    Sheepdog rdholtz's Avatar
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    Silent Runnings

    There's still no sound from my carPC. I checked the BIOS settings, and they appear to be fine. The audio drivers seem to be the latest versions., so I suspect the next thing to do is add a preamp. I'll try to get that soldered up today. The temperature here has fallen below freezing; what used to be cold rain is now snow flurries, and that low temperature is making outside car work less than fun. I'll see if I can slip the Scion into the garage for a while and do some updating.

    Well, Not Completely Silent . . .
    There is some noise, and it's noise I hadn't expected: the screen mount rattles until the car warms up. I forgot that the screen mount is simply metal-to-metal right now. The cold weather seems to aggravate it until warm-up.

    I thought I'd want to be able to adjust the screen angle, but it's been perfect in the vertical position, and I think leaving it like that is going to work just fine. So I'll need to review the screen mount and determine the best way to lock it in the vertical position, and figure out whether that will eliminate the warm-up rattle.
    .
    If just enough is really good, then too much ought to be perfect.

    2006 Scion xB with in-dash Atom & Lilliput 889GL -- Worklog at http://www.mp3car.com/vbulletin/work...res-links.html
    .

  8. #1108
    Newbie peewee3ie's Avatar
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    Hi rdholtz,

    A bit of foam would help that as it is. without changing anything. Just put a bit between the 2 metels and that sorted.

    Did you try headphone on the computer. if you don't hear anything then it is a driver problem as I had a same problem. I had to go back to the driver that came with the motherboard. you should not need a preamp, as the audio out on the back is ment for speaker with an amp and your car radio (head unit) is the amp.

    If you have to high of an input you can kill the input stage of an amp.

    If I was you I would try the old drivers first or a set of pc speakers or head phones. This could save you some time.
    Tony

    Just started me carpc here is a tempory link to pic of it http://mcgcs.net/carpc.

    my worklog http://www.digital-car.co.uk/forum/s...027#post249027

  9. #1109
    Sheepdog rdholtz's Avatar
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    Quote Originally Posted by peewee3ie View Post
    A bit of foam would help that as it is. without changing anything. Just put a bit between the 2 metels and that sorted.
    That would work well. I don't have any foam handy, so I decided the easiest route was to simply move one of the USB cables into the gap as a cushion. That will keep it from rattling until I can get the car back to the home shop and build the permanent mount.

    Quote Originally Posted by peewee3ie View Post
    Did you try headphone on the computer. if you don't hear anything then it is a driver problem as I had a same problem. I had to go back to the driver that came with the motherboard.
    I went to use the Bluetooth headset, and found there were two problems: (1) the headset was dead and needed recharging, and (2) the Bluetooth installation had failed. I stuck the headset on the charger for later, and pulled the USB Bluetooth nubbin out of the back of the PC, and plugged it into a USB port on the powered hub. The system recognized it right away, and it's good to go. When the headset is charged up, I'll go do some tests.

    Quote Originally Posted by peewee3ie View Post
    . . . you should not need a preamp, as the audio out on the back is ment for speaker with an amp and your car radio (head unit) is the amp.

    If you have to high of an input you can kill the input stage of an amp.

    If I was you I would try the old drivers first or a set of pc speakers or head phones. This could save you some time.
    I'm not too worried about killing the head unit. Josh put a somewhat similar unit in his Scion, and it worked just fine. The one I'm building isn't exactly the same, but it's pretty close. I'm hoping it will be just enough power.
    .
    If just enough is really good, then too much ought to be perfect.

    2006 Scion xB with in-dash Atom & Lilliput 889GL -- Worklog at http://www.mp3car.com/vbulletin/work...res-links.html
    .

  10. #1110
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    a quick question, but won't a blue tooth headset use its own "soundcard" for audio and not use the pc onboard that uses the same jack as the headunit?

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