USB GDrom Thread

Discussion in 'Sega Dreamcast Development and Research' started by nonosto, Jun 13, 2015.

  1. Friend of Sonic

    Friend of Sonic Spirited Member

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    It really is a shame about Mnemo's behavior. At least he didn't outright cheat anyone on an individual basis, but this behavior is really unfortunate. It's a shane his business is so poor because he has a great product
     
  2. darcagn

    darcagn Site Supporter 2013, Site Supporter 2014

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    I wasn't really going to buy a USB-GDROM because I bought a GDEMU before the USB-GDROM even existed, but I'm definitely not going to recommend it to anyone now.

    Well, Stone Age Gamer fronted him $1500 worth of connectors for his board and then once Mnemo received them he changed their agreed-upon price, essentially scamming them out of their money. Sure, he didn't scam an individual in this situation but I certainly can't say I'd trust sending any money to Mnemo at this point. It's far too easy for him to exit-scam from this business (i.e. building a reputation and then taking a bunch of orders and not fulfilling them and disappearing).
     
  3. Rocky5

    Rocky5 Site Supporter 2015

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    Alpha testing of the new UGC firmware has started.

    I'm not part of this alpha :(
     
  4. Sonic-NKT

    Sonic-NKT Newly Registered

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    does anyone know more about what new features will be integrated in the new firmware?
     
  5. Friend of Sonic

    Friend of Sonic Spirited Member

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    That is a very good point. It makes you wonder how someone could be so crass to someone, especially when they stand to make good money from the partnership
     
  6. rayik24

    rayik24 Active Member

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    Where is this message found? I've looked at the site and cannot find it.

    BTW, I purchased one which was delivered at the end of January 2016. Firmware is 15/11/20(a). If any one can give instructions on how to extract it, iIll do that and post it.
     
  7. erfg12

    erfg12 Rising Member

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    [3/28/2016 2:05:25 PM] erfg12: I'm sorry if I was rude before. I got one of your products from StoneAgeGamer.com
    [3/28/2016 2:05:28 PM] erfg12: Thank you for your work.
    [3/28/2016 5:24:34 PM] MNEMO: Yes, but price pretty high.
    [3/28/2016 5:24:38 PM] MNEMO: Soon will be cheaper.
     
  8. Greg2600

    Greg2600 Resolute Member

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    Perhaps a GUI? There are nicer menus on the freaking Harmony Cart on the Atari 2600!!!!!!!!!!
     
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  9. Olschoolgamer

    Olschoolgamer Spirited Member

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    Looking forward to the new firmware. Also disappointed in all the drama between MNEMO and SAG. He seemed to have burned several bridges with all of that. Despite that, I had good business with him. When I contacted him he got back to me fairly quick and my transaction went smooth. Wish he would've worked with Krikzz. I think if all of these different developers could collaborate we could all benefit greatly.
     
  10. Friend of Sonic

    Friend of Sonic Spirited Member

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    It is on the main page for USB GDROM. Now it says this:

    more features, fixes, improved compatible with HDD- in development: alfa testing started

    So, it sounds like it's complete now that alpha testing has begun
     
  11. lovewiibrew

    lovewiibrew Site Supporter 2012

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    So was there ever a consensus on what resistor to use to reduce heat in the dreamcast? I'm too much of a noob to try de-soldering something.
     
  12. krisk77

    krisk77 Peppy Member

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    It's already mentioned on this site. 300ohm 1/2w resistor
     
  13. Mauricio

    Mauricio Active Member

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    Hi

    I read all 19 pages but I'm still in doubts about best option for me to reduce heat in Dreamcast.

    I've already ordered an gdrom usb directly from Mnemo. He replied to me after SAG drama (I was waiting for a reply for 3 weeks) paid an he already shipped it. But in want to use a external hd to fill all the trurip collection in one place.

    Picopsu seams to be the best technical option but I'm in Brazil and will have difficult to find components here and I don't have room for tries. I should buy the right component in the first try. To add difficult I will have to hire a technican do to the work for me. I never touch a soldering iron!

    So picopsu will only be an option to me if anyone have a Dreamcast plug and play ready and tested picopsu to sell to me ( please contact...)

    The only remaining options are the resistor between ground and 12v rail and the original psu mod for cut the 12v generation.

    What option are the best? De soldering and take off the 2 components of original psu will indeed reduce heat? Someone here said no...

    My Dreamcast have a ide mod with a 3.5 hdd but with external power supply. I will loose this mod with any solution?

    Thanks

    Mauricio
     
    Last edited: Apr 6, 2016
  14. citrus3000psi

    citrus3000psi Housekeeping, you want towel?

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    Removing 12v linear voltage regulator does indeed work. The pico power supply I would say is the best solution because its just much more efficient then the stock unit. But I prefer the stock unit over a hacked in pico, Now if there was a pico in the same form factor as the original psu...
     
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  15. Mauricio

    Mauricio Active Member

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    Citrus

    Since there is not such pico psu avaiable (and I also needed it wilth all dreamcast compatible conectors), what remaining option to you consider the best? I´m inclined to add the resistor because I can easily return psu to original estate but if removing the 12v have advantages, I can go either way.

    About the hdd, do you think it´s a better idea to drive the usb cable outside case and leave the HDD outside (less heat)? Do you think I can do it without moding the case? I will install the lid switch, so I think I will cannot be able to play with the lid open to pass the cable...

    Thanks

    Mauricio
     
  16. citrus3000psi

    citrus3000psi Housekeeping, you want towel?

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    I think MNEMO's original intention with V5 is to use a usb thumb drive. Not an external hard drive

    The resistor thing is still up in the air, the last thing I read is that you need something rated in the 3-5 watt range.

    I would keep the hard drive on the outside. If it was me, I would install something like this to the back of the case:

    [​IMG]
     
  17. Mauricio

    Mauricio Active Member

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    I didn´t have an option since Mnemo only manufacture v5 now. He told me that he only use usb thumb drive.

    If nothing else change, I will go to the "removing 12v" path. I don´t have the means to be testing 1/2w, 3w or other wattage resistor.

    Nice adapter. Where did you find it?

    Mauricio

    Found the adapter on Amazon:

    http://www.amazon.com/StarTech-com-...rue&ref_=ox_sc_act_title_3&smid=ATVPDKIKX0DER

    Many brands and sizes.

    Thanks

    Mauricio
     
    Last edited by a moderator: Jan 27, 2017
  18. lovewiibrew

    lovewiibrew Site Supporter 2012

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    No, people said that wasn't good enough.

    I'm trying to find a solderless solution and it seems the resistor is the way to go for that. So a 5w resistor at how many ohms?

    Alternatively, could I just put another fan in it?

    Also this was on the order page for the USB GDROM:

     
    Last edited: Apr 6, 2016
  19. krisk77

    krisk77 Peppy Member

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    Good enough for me, had no issues after 16 hours continous play and the system is frequently used.

    Tbh, all this heat blah, blah is blown out of proportion and made to sound worse than it is. Yes, there is extra heat (spikes) on the 12v since USB and gdemu both don't require 12v to run and I own them both. Because of the drive being removed it plays a part too, so creating a air filter inside helps this. All this extra fan stuff, is overkill imo, yet each to their own I guess, if you wish to do that.
     
    Last edited: Apr 7, 2016
  20. Mauricio

    Mauricio Active Member

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    Superg (gscartsw 8:1 fame ) is his new dealer in US:


    Ordering closed. You should come back later.

    (Temporary I don't send to USA. In May I can send couple devices only. Later more.)


    My dealer in USA http://assemblergames.com/l/members/superg.66399 (now pre-orders only)

    For information- Currently in my stock about 50 pcs of USB-GD. Since July I will produce 150-200 devices per month.
     
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