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Thread: 300W tiny PSU final feature requests collecting

  1. #61
    Maximum Bitrate
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    Q&A No.6

    Q: are you making money from this product?

    A: No. it is just my hobby. and I don't think that it can bring me much money if I intended to low the list price.

  2. #62
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    Q&A No.7

    Q: are you going to sell the design or make it to produced in USA?

    A: as a US resident (green card owner) I do hope it can be helpful to the US companies, and some kind of coporation could help me paying tax there

  3. #63
    Raw Wave RoyN's Avatar
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    Dragon, couldnt you have it produced in China for a cheaper price and then sell it to Mp3car store (or even direct if they dont want it)?

    I'd prefer keeping costs down than having it built in America or Europe or anywhere with higher manufacturing costs... (not to promote sweatshops, but cheaper labor can make us all have a good deal, why not take afvantage of it)
    Roy

    2005 Range Rover 4.4
    Any ideas for putting a PC in this? :)

  4. #64
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    Q&A No.8

    Q: what is the size of this so called TINY 300W PSU?

    A: as what I showed on the 150w thread, I hope the final product could meet the size of 120mm x 46mm x 31mm

    and this picture is on page 16th of that thread also
    Attached Images Attached Images  

  5. #65
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    Q&A No.9

    Q: above all, when will it be released?!

    A: I have stopped all software plugins and CF1.4 related projects on doing this, It already took me 1 month (and much money )
    what I am going to say is to release it ASAP

  6. #66
    FLAC evandude's Avatar
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    Meddler, thanks for the input.

    I'm not using a picaxe due to the price, and the limitations on program size and speed... (limited to 600 lines of code at most... whereas on the 16F88 I get 4000 lines of assembly) Also, a regular PIC can do the same functions in terms of not requiring a programmer; all it needs is a bootloader. After all, all a PICAXE is is a regular PIC pre-programmed with their proprietary firmware. As you can see from my earlier discussion, I'm implementing basically the same set of features (including amp turn-on if I can spare the I/O) plus temperature and voltage monitoring... and my final board needs to be significantly smaller than 2"x3" (probably more in the range of 1"x2")
    Obviously, i'm using a surface-mount PIC... and the size constraints demand a TSSOP package, which the PICAXE does not offer anyway.
    I can easily see the PICAXE being good for quick projects and things, but for a commercial product, spending a couple extra hours getting it set up is well worth the few dollars you'll save on every single unit. (PICAXE is about $8 I think in USD, and the 16F88 is under $5 in single units, and under $3 in quantities over 25)

    However, if you have any ideas that you think should be implemented in my board, let me know. It sounds like you've got some programming experience on the computer side of the communications, perhaps you can offer me some advice there.

    Due to the modular design of this PSU/SDC interface (the 14-pin socket) there won't really be much stopping someone from plugging in their own custom SDC if they so desire. So it should be very appealing to the hardcore DIY'ers as well
    But don't take it from me! here's a quote from a real, live newbie:
    Quote Originally Posted by Viscouse
    I am learning buttloads just by searching on this forum. I've learned 2 big things so far: 1-it's been done before, and 2-if it hasn't, there is a way to do it.
    eegeek.net

  7. #67
    Low Bitrate Coldfusionpower's Avatar
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    Quote Originally Posted by dragonBTV
    Q&A No.9

    Q: above all, when will it be released?!

    A: I have stopped all software plugins and CF1.4 related projects on doing this, It already took me 1 month (and much money )
    what I am going to say is to release it ASAP
    goint to release it ASAP ... that's really nice to hear ... Yay !!
    First 3 Version DONE ...but sold ..with the car .. now .. building another one for the new car .

    Coming Soon : CarPC 2.0 .. 40%

  8. #68
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    Hate to ask, but what will the estimated cost be? (at least a range)

    Thanks!!! I am in dire need of this as my case will not fit an opus.

  9. #69
    Raw Wave RoyN's Avatar
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    hum, I'm not sure if dragon will risk putting a real figure up as it would depend greatly on shipping/importing costs, whether mp3carstore takes it up, or if he sells direct, yada, yada, yada..... but if he can post a certain pricerange that would be cool!
    Roy

    2005 Range Rover 4.4
    Any ideas for putting a PC in this? :)

  10. #70
    FLAC evandude's Avatar
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    Sorry for this rather "boilerplate" answer...

    We are very much trying to make the price very competitive with other DC-DC PSU's out there.

    It's very hard to pick a price before somewhat finalizing the design, finding parts costs, and getting a quote from a company that will actually manufacture the units... not to mention dealing with shipping and resale and all that stuff, as RoyN pointed out.

    We do have some ballpark figures on what we expect the PSU and SDC to cost, but we'd certainly hate to disappoint anyone by having them come out higher than expected when all the details were sorted out.

    For what it's worth, I think the price should be quite reasonable. I would expect those who find the opus 150w to be a good bang for the buck would find this to be also. (and even though dragon's shooting for twice the wattage, we're not expecting it to cost twice as much as the opus... the power supply really shouldn't be the most expensive part of your system )
    But don't take it from me! here's a quote from a real, live newbie:
    Quote Originally Posted by Viscouse
    I am learning buttloads just by searching on this forum. I've learned 2 big things so far: 1-it's been done before, and 2-if it hasn't, there is a way to do it.
    eegeek.net

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