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Thread: New Build...What do you think?

  1. #1
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    New Build...What do you think?

    Hello,

    My first post! I want to build my 1st carpc and I've been doing alot of reading on here for the last couple of weeks. Below are what I came up with and I appreciate your feedback. For now, sound quality is not a priority as long as it sounds factory or better. I care more about functionality, reliability, and clean dash look. I also care about ease of returning back to stock and transfer this to my wife's SUV or my next vehicle.



    Motherboard: ASRock H67M-ITX
    CPU: Intel Celeron G530
    SSD: Crucial M4 64GB
    Case: ByByte BBX-1 Mini-ITX
    Touch Screen: Capacitive Multi-touch 7" LCD
    Power Supply: M4-ATX 250w
    Amp: TDA7850 with Denoiser
    Microphone: Phoenix Audio MT107A
    Radio: Directed DMHD-1000 + Mitch's Interface Cable
    Steering Wheel Control: Joycon EX
    GPS Receiver: i-Blue GM-2
    Bluetooth: AZiO BTD211
    WiFi: Airlink101 802.11n AWLL6075
    O/S: Windows 7
    Frontend: Centrafuse Auto 4.0
    Wiring Harness: Speakers + Power, Steering Wheel Control??, Antenna??




    A few questions I have:



    1. Touch Screen
      Will it fit right into the ByByte BBX-1?
      Does it support auto-on?
      Any video issues using Intel HD?
      Is 800*480 possible?

    2. M4-ATX
      Any issues powering the PC, touch screen, amp, and all above USB devices (except Directed HD)?

    3. Microphone
      Any cheaper alternatives to the expensive Phoenix MT107A that can reliably perform voice commands and clear, echo-free calling?

    4. Bluetooth
      Is AZiO BTD211 a good choice for Centrafuse? Main use is handsfree calling and phone book sharing.
      Do I have to install IVT BlueSoleil software to work properly with Centrafuse?
      Any other inexpensive usb dongles that support 3.0 EDR and Centrafuse?

    5. Vehicle Specific (2005 Nissan Titan SE with mid-range 6-disc stereo)
      Will Joycon EX work with my steering wheel controls?
      Is there a steering wheel control wiring harness? I really don't want to cut into the factory wires.
      Do I need an antenna adapter to plug the factory antenna into Directed HD? I am having trouble finding one.



    Thanks!
    Last edited by chung_chang; 11-19-2011 at 10:41 AM.

  2. #2
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    I ran into a roadblock already. The double-din case won't fit behind my dash. It is too long. I removed my stock stereo and measured depth behind the dash. It's about 35mm short! Back to the drawing board. I'll have to mount my car pc elsewhere if I want to keep a mini-ITX motherboard (which I really do!)

  3. #3
    Constant Bitrate
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    Webcam integration as CAR DVR?

  4. #4
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    As nice as BBN-ITX sounds in theory, few cars have a double din opening deep enough to fit a whole motherboard. Once u get it to fit, don't forget all the wiring and USB connectors that will also add to your depth requirement!
    If you really want to go with the all-in-one approach, checkout the new zotac zbox nano ad10 - it's much smaller than a Mini-ITX and laid out in a way that would save you lots of space. You could take it out of the case (or leave it in the case, even) and put it directly into BBN. I had a similar approach - check out my worklog thread.
    As far as m4-atx goes, I think 250W would be plenty to power everything you have. However, the harness wires are of a smaller gauge and I wouldn't recommend putting more than 10W @ 12V load on them. I'd recommend you bring dedicated BAT/IGN/GND wires with a lower gauge (I mean, a thicker wire). I'm not sure about power requirement for TDA7850, but I have an inline fuse of 5 AMP on the line that powers it, and it hasn't blown yet, so 60W is the ceiling for that amp for sure (probably a lot lower).

  5. #5
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    For Centrafuse, anything BlueSoleil-compatible will work. You do have to install BlueSoleil, the version that comes with Centrafuse.

  6. #6
    MySQL Error soundman98's Avatar
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    for the screen questions, your better off contacting motor city tech, or his username here-- tft-lcd-org

  7. #7
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    Quote Originally Posted by soundman98 View Post
    for the screen questions, your better off contacting motor city tech, or his username here-- tft-lcd-org
    Thanks soundman98 for his username here! I will contact him.

    Quote Originally Posted by nivanov View Post
    For Centrafuse, anything BlueSoleil-compatible will work. You do have to install BlueSoleil, the version that comes with Centrafuse.
    Nivanov, I have read some of your worklog during my research and have definitely inspired me to get this project underway. So, big thanks to you!

    I have considered that Zbox Nano AD10, but in the end, it would cost me a couple of hundred more. I am leaning towards remote mounting right now. I have measured my glovebox and it would fit a M350 case nicely. Plus it opens up behind the dash and is right next to the stereo location for ease of wiring. I think this is probably a good compromise for now.


    I have a few questions on the "TDA7850 with denoiser" if you don't mind:

    1. Sorry if I missed this in your worklog, but can it be powered directly from car's switched, unfiltered 12v source? I think you made mentions of it. Is that what you have done?

    2. You also mentioned that it has a remote trigger to prevent startup thump. I read that you've used some USB relays to do this. How would I accomplish this with the anti-thump control that is already built into the M3 or M4 power supplies?

    3. Since you have it mounted very close to all the PC components, does it pick up any sound interferences or degrade sound quality? I was wondering if I should mount it somewhere outside the case.

    As for Bluesoleil, I have a similar thread started on Centrafuse forum. They are saying Centrafuse 4.0 no longer comes with Bluesoleil. But their FAQ did mention they'll supply a key to activate it. I guess I can download a trial BS 8 and activate it with a purchased Centrafuse. I'll clarify this with them.

  8. #8
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    Sure thing. Here are my experiences with TDA7850 Denoiser

    Quote Originally Posted by chung_chang
    1. Sorry if I missed this in your worklog, but can it be powered directly from car's switched, unfiltered 12v source? I think you made mentions of it. Is that what you have done?
    Yes, I hooked it up directly to the ACC line. Not even BATT - straight up to ACC.

    Quote Originally Posted by chung_chang
    2. You also mentioned that it has a remote trigger to prevent startup thump. I read that you've used some USB relays to do this. How would I accomplish this with the anti-thump control that is already built into the M3 or M4 power supplies?
    The amp has a Mute pin. The way it works is, if the pin receives Vin (same Vin you supply at the + terminal of the amp), the amp is muted. So to prevent thump, you want to start the amp muted and then unmute it later. I had two thumps: one is when the car gets turned on (due to voltage fluctuations, i assume) and another due to the usb sound card having a startup pop. I solved it by using a USB relay: I took the Vin line and connected it to the relay and took the NC contact (Normally-closed, so when the relay is off, the current flows through) and hooked it up to the Mute pin. This means that as soon as the amp gets power, it is muted. The relay is switched by a service I wrote, once Windows boots up. By the time the service is loaded, the USB card is fully initialized, so there's no thump.
    I'm not sure how M3 anti-thump works, but I think it might do it in reverse: it will give power to the anti-thump wire when the amp should be on. You can use a 12V relay to invert that, similar to what I did, only you don't need an expensive USB-controlled relay, just a normal 12V relay. Once again, I have no clue how M3 thump works, so I would measure the voltage of the thump control wire and figure out how to go from there.

    Quote Originally Posted by chung_chang
    3. Since you have it mounted very close to all the PC components, does it pick up any sound interferences or degrade sound quality? I was wondering if I should mount it somewhere outside the case.
    As far as I can tell - no. The quality is on par with in-dash receivers and there's absolutely no noise, like alternator whine, at least in my case.

    Quote Originally Posted by chung_chang
    As for Bluesoleil, I have a similar thread started on Centrafuse forum. They are saying Centrafuse 4.0 no longer comes with Bluesoleil. But their FAQ did mention they'll supply a key to activate it. I guess I can download a trial BS 8 and activate it with a purchased Centrafuse. I'll clarify this with them.
    I bought Centrafuse 3.5 and it came with BlueSoleil. I'm pretty sure they'll keep shipping with it, since it's the BT framework they wrote their code to work with.


    I hope this helps!

  9. #9
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    Hooking it straight up to ACC is good news! Your explanation for the Mute pin is very clear. I'll be doing some experiments with M3's anti-thumb once I receive it. No sound interference is also great news! I'll be mounting my TDA7850 Denoiser inside my PC case too. I'll document everything here along the way so others can benefit just as I have benefitted from your work. Thanks again and hope you don't mind popping in here once in a while if I have more questions for you.

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