Tag: 3D printing

  • Finalizing Amiga 4000D (…for now)

    Finalizing Amiga 4000D (…for now)

    Finally all 3D printed parts are ready, time for assembling everything together.

    Gotek, 3.5″ Floppy and DVD-ROM mounted to my new 3D printed drive cage. When putting cage in, you can move it few millimeters to right so SD extender cable has plenty of room to slide inside.

    Moment of truth, putting front bezel back. And it fits perfect!

    First Firebird daughter card which provides 4 PCI slots, 4 Zorro slots and 1 Video slot. In video slot I have the Scandoubler daughterboard from Cybervision 64/3D, it just has superior image quality compared to native output or any VGA-adapter connected to it, even OSSC. I modeled bracket for it, as the original stays with the Cybervision card. You can find that also at printables.com.
    Above that sits S3 ViRGE display card, but funny enough, its only purpose in this setup is to provide DMA memory for other PCI cards.
    And on top there’s USB host card with NEC chip from which the USB extender cable goes to front face of Gotek.
    On backplane you can see the HDMI and Ethernet bracket with extender cables. They’re routed back to Z3660.

    And believe it or not, case closed! Eagleplayer playing Das Boot, Ami-Back taking backup to NAS over SMB2, which btw works just great! 100MB+ backup in five minutes or so.
    And the black box you see on top of Amiga, is a passive audio mixer I quickly built. As I now have AHI audio besides native Amiga audio, I wanted to have them both to play through same AMP input I have, so no switching inputs for sound.

    Schematics for the mixer are pretty simple, all inputs connected to output through 1k resistor. You could add volume level controls with potentiometers, but as I tested this, both audio outputs levels were pretty much the same.

  • New Gotek bracket with SD card reader

    New Gotek bracket with SD card reader

    As Amiga 4000D doesn’t have too much spare space in front for additional gadgets and connectors, I decided to model completely new 3.5″ Gotek mounting bracket with 0,91″ OLED display, rotary encoder, additional USB port and SD card reader slot. You can find it at printables.com. My first model ever with Fusion 360, so the model file itself is kinda mess, sorry.

    I had to remove Gotek LEDs and buttons, which are redundant because of the rotary encoder, to fit the USB extender there. It’s just fixed to the PCB, possibly you could add normal PCB USB connector there, but didn’t have one available. This seems to work just fine. Other end of the USB cable goes to USB PCI card with NEC chipset which has 4 external and 1 internal USB port.

  • Fitting Gotek with SD card reader to front

    Fitting Gotek with SD card reader to front

    Like I said, things has to be done properly. As Z3660 limits the length of sd card extender (150-200mm), it can’t be routed to the back. I already has designed Gotek carriage in place of second 3.5″ floppy drive with additional normalk USB-connector. I decided to modify that a little and add sd card holder below the OLED screen. Here’s first prototyping.

    And as you can see from the picture, I had to make and redesign the whole 5.25″ / 3.5″ drive bay, as there’s no way to route sd card extenders cable through the original carriage. But that’s how these projects usually go. Above model is by LinuxJedi and you can find it at Thingiverse.

    A4000D Front drive bay is ready, final version currently printing. You can find it at printables.com. Had to make quite a few revisions, I first thought that Gotek would go on lower bay but then I found out that that won’t work with my only floppy cable and its orientation, the DF0 device has to go to bottom slot. So I made new revision which has all screw holes for 3.5 drives and passthrough for SD card extender on both bays.