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About Trash80toHP_Mini

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    Bermuda Triangle, NC, USA

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  1. Belay that bit about needing to do full res for downscaling. Makes no sense on second thought. You're still stuck using a VGA-HDMI adapter, but the controller may be expecting a digital only feed if it doesn't have the analog VGA input on board?
  2. I doubt there is such a thing as the controller you seek. VGA to HDMI is probably what you'd need to do. I'm not so sure even that would work as you'll likely need a clean QXGA signal to be downscaled? 1920x1200 (WUXGA) is a hard ceiling for Analog VGA from what @trag and @Gorgonops have said. QXGA is likely to be a pixel too far for anything 68K or NuBus/030PDS architecture. Dunno if there's support for QXGA in PCI or if it'll require a card from the AGP era?
  3. I'm really liking what I see in that SeaSonic PSU! What are the dimensions of the PCB? It looks much shorter and easier to use than the one I have in hand. I'd still mount it in the IIsi can backwards from the way you have it set up. Possibly doing it upside down from the case bottom with standoffs or suspend it from the lid, depending on component heights at front and back. Love the cabling connector, so easy! That would be at the rear hooked via adapter board to the stock IIsi connector assembly. Fan and plug would be removed at the front end with something like a 50mm x 50mm x 10mm fan, though it wouldn't quite cover the entire grating. I'd also have to put a pair of vents in either top or bottom of the IIsi can with a hole saw to match SeaSonic airflow requirements as below.
  4. Gotta say I LOVE your work here. I jumped into the thread late, I'd love to snag a couple of your boards too. For the IIsi specifically, I've had the bare bones of a power adapter board and setup worked out that makes use of the stock ass end components of the IIsi PSU and possibly some bits from its PCB? Dunno, I've been kicking it around for the longest time, I think I have better drawings somewhere in the files if you're interested? Drawing shows backplate laid flat. It plugs onto headers on adapter as in stock PSU and retains fuse protection for the AC bits in and monitor passthru connector on the new PCB which resides in the white section underneath connectors and behind the FlexATX bits in the mockup below: FlexATX is inverted and I've reversed the orientation/airflow of the FlexATX PSU to vent it and the rest of the IIsi case's exit air out a 120mm fan equipped ducted vent/hole routed out from under under the FDD and fitted into that cavernous empty cubic. Airflow from the stock fan is reversed and vane directed at the Radius Rocket and Savvio server drive of the SuperIIsiā„¢ with all heated air from the inside case blown out the through that 120mm hole in the bottom, reminiscent of the Q605/LC cooling setup. Airflow cooling of the IIsi PSU is very different and yet the same as the Q605/LC, so you shouldn't need need to do anything even close to that crazy. In the stock PSU, air is drawn in from the top vents and moseys out the perforations on both sides of the can in a far more direct manner than the pizza boxen. The exhaust fan at the back does all the work. Depending upon the config of the components inside your PSU of choice a few options are open, so to speak. Ducting the exhaust air from FlexATX might be done via the air inlet atop the IIsi's stock PSU. Flip the PSU in the mockup above so the PCB is on the bottom and the white area defines empty cubic to be used as a ducted airway vent. There might be so little heat generated at IIsi output to simply blow it out the front to head on out the back as is the heat from the stock PSU. Airflow for FlexATX is VERY dependent on a front to back (or back to front) direction for properly cooling the components inside and across the heatsinks of the worst offenders. Worst case scenario has a FlexATX can overlapping the front third of the IIsi can's slots on top. That's no biggie as the remaining area probably exceeds that of the slots on the passive end of the FlexATX can. Whatever, just thought I'd add some ancient IIsi info to go with the IIcx form factor stuff.
  5. @trag THX, forgot all about those things, Got a little one to go from 5V or 12V to 3.3V a few years ago. Took some measurements for the max size spec. of a drop-in ATX replacement for a IIcx form factor PSU: 150mm W, 140mm D, 86.5mm H A hair less might be better for Width and Depth in order to do a two sided mounting flange wrap. For that configuration, the fan needs to be on the top. Part out the original PSU, nibble a big hole for the fan on the bottom and your three sided, flanged wrap is ready made. with a notch on the corner of the hole, both mounting ears are retained for the power connector. I'd be tempted to nibble a hole in the exit grating on the back of the ATX PSU to match up with the louvered opening at the rear of the case to free up some airflow. Maybe not, the PSU will be idling at something like 20% to 40% max just to run anything with a PSU in that form factor.
  6. I wonder if technical drawings of that Newegg PSU's case are available anywhere? A cardboard mockup I can afford ATM, not the PSU.
  7. Is that for eBay or Newegg? Can't imagine a Mac testing a 680W PSU to the point of borkage.
  8. Dimensions are almost spot-on for inverting that Newegg PSU to replace the IIcx can. Bending a sheet metal wrap for that can on a box & pan brake would be easily done. Pop riveting or screwing it to side and back would yield mounting flanges, angle at back and all. Might need to do some surgery on the back side of the can to clear the snap? Dunno looks pretty good to the digiper readings for that. Dunno, worth a try anyway, the 3D model in my noggin looks pretty good. ___ | | | | | | | | | | | | |_______________________________________________ |
  9. Trash80toHP_Mini

    Brittle plastic OMG!

    I doubt it would warp if you got only half of the way to the melting point? Dunno, testing at different temps would be done first, obviously. Come to think of it, testing in an oven at different temps would be an interesting exercise.
  10. Trash80toHP_Mini

    Apple IIc Flat Panel

    I just replied to @olePigeon my own old thread instead of this one by mistake.Apple IIc VGA and related peripheral hacking silliness. ________________________________________________________________________________________________ RamWorks looks a bit long, got pics of the other and the measurements of both? Now thinking about replacing the FDD with VGA adapter and SD/Somethingorother2somethingorother with that media slot pointing out the FDD slot. Right about this point my long gone Laser128 is looking even better as compared to the IIc than it was in the day. ________________________________________________________________________________________________ ktkm just added his of his setup Edited 17 minutes ago by Trash80toHP_Mini
  11. Trash80toHP_Mini

    3D-printed Casing for LCD Panel?

    Forgot to say FABULOUS! in the post above.
  12. Trash80toHP_Mini

    3D-printed Casing for LCD Panel?

    Amazing, loving it!
  13. Trash80toHP_Mini

    Apple IIc VGA and related peripheral hacking silliness.

    RamWorks looks a bit long, got pics of the other and the measurements of both? Now thinking about replacing the FDD with VGA adapter and SD/Somethingorother2somethingorother with that media slot pointing out the FDD slot. Right about this point my long gone Laser128 is looking even better as compared to the IIc than it was in the day.
  14. Trash80toHP_Mini

    Brittle plastic OMG!

    I've read that the plasticisers leach out as well, causing brittleness, everything-you-need-to-know-about-abs-plastic has some interesting info, especially the glass transition/melting point of ABS. Adding-salt-increases-water-boiling-point so adding a lot of it might work better by reaching a bit closer to the melting point ABS. Using a boiler to raise the temperature of superheated steam for the task might work a lot better, that or putting the plastics inside the boiler? Dunno, but if it works, jury rigging a redneck boiler contraption to do the deed would make one hella YouBoobTube video.