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Teti [gd0022]

T for "Tethered Tablet" PC. This is a 3D printed ITX case and monitor stand.

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I didn't want to design a PC. I'm a laptop person. After hours of (re)searching, I couldn't find a laptop that had the features I was looking for, and I don't have the expertise to DIY one, so I turned towards a relatively portable custom desktop solution.

What you see is the 3rd design attempt of this case. The main component is a set of 3, 4K USBC touchscreens that are 15.6" in size. I would've gone with 120Hz 17.3" 1440p if I had the option. Each screen uses around 7W on average (20% brightness).

  • Using 1 connected to a 3 metre cable allows an always-charging-tablet-like experience (I've always wanted to own a Victorious/iCarly XL Pear Pad). 
  • Using 2 connected to 3m cables allows for a dual screen laptop experience (inspired by the concept laptops that never reach the market)
  • Using 3 connected with 1m cables and mounted onto Teti is for the desktop experience. I don't think I'd need 3, but I can say that having 3 boost "hacker vibes" to make using the bottom two screens feel more productive.

I dislike ultrawide setups due to the horizontal space and neck-turning needed, as well as monitor light coming in from the sides of my vision, so I'm mounting the 3 screens verticaly (which has around the same surface area as a curved 27" monitor in portrait orientation). This was partially inspired by the #T^2 Tiles [gd0095].

The system uses a Z590I Vision D ITX, which happened because AMD was out of stock of their 5900x for months after release and this ITX board came out with my wishlist IO panel, unlike the AMD options. I went with an 11600K I got for £219. I was also able to get an FE 3060TI in June 2021. A Gigabyte Titan Ridge is used for the other 2 USBC output ports for the screens. Other parts include:

  • 64GB 3200Mhz Blackout DDR4 RAM (that I got for £193.49)
  • Corsair SF750 PSU
  • Adata SX8200 2TB SSD

The keyboard and mouse project is #Tetent [gd0090] (though I'd also like to use #Tetent Timespy [gd0136]) and the backpack to carry it is called #TetInventory [gd0039]. For now, I intend to print it on the CR600S (see #Revolving Hotend [gd0012] and #Printer Repair [gd0137]).

  • [M] Small file updates

    kelvinA09/19/2022 at 10:21 0 comments

    Tetent as modelled in https://hackaday.io/project/184181/log/211077

    Width increased from 185 to 190mm.

    The screen holders have been increased to the same length as the two Tetent's, which is currently 214mm. The print thickness has decreased slightly from 12 to 11mm so that they'd fit. This decreases the pressure exerted on the screens, and should make the tablet stand and laptop mode more stable.

    Wed 21st Sep

    Following the PCB design of #Tetrinsic [gd0041], I've updated the branding of #Tetent [gd0090] and Teti.

  • [M] Small tweaks

    kelvinA07/13/2022 at 16:21 0 comments

    First was adding some faces to the mini logos so that they can be lifted up and slotted back in. This is to allow storage of the Tetents.Then I modelled the clips that will hopefully keep the screens in place.

    Currently, I'm adding mounting holes and slots everywhere, in hopes of being able to print a minimum viable box.

    I don't know why I didn't think about it until I woke up today, but I could've designed and printed these sections of the case and have my PC in some resemblance to a box instead of living ontop of the motherboard's packaging box.

    It also allows me to make sure all the wires fit in here before I start printing the rest of the case.

  • [R] OLED Screens

    kelvinA07/11/2022 at 01:06 0 comments

    I just found out that 4K touch portable OLED screens now exist, and at a price that is actually affordable: https://www.aliexpress.com/item/1005004110616192.html

    If these were around in Dec 2020 when I bought my screens, I most likely would've jumped on these instead. Thinner, deeper blacks, more colours, built in stand and has a full sized USB? Yes please.

    Especially nowadays since the screens I bought late 2020 have gone up £70 each.
    It also looks to have less chin.

    Oh there's also an IPS one in the same body.

    Then it would've been an even easier sell to me. Buy 1 OLED main and 2 IPS additionals.

  • [M] Screen Holders and Dual Screen Laptop Mode

    kelvinA06/17/2022 at 15:40 0 comments

    [17:30] Sigh... Now that I'm back into designing Teti, I think I can see the reason why my progress has stalled for months: all the "low hanging fruit" tasks mostly dried up and it was now predominantly the complex tasks left. One such task is designing the screen holder.

    Read more »

  • [M] Feature Naming and Branding

    kelvinA06/17/2022 at 08:18 0 comments

    Last night, I was renaming Fusion 360 features to bring the standard of the CAD file more inline to the best practices I thought up a while ago. I also added a temporary stack of screen holders in the area that has been vacant for quite some time (see below).

    Eventually, I got to the part of the model that puts branding on the left panel, and I wanted to change it in a way that would be consistent with other projects.

    Read more »

  • [E1][A] Initial Project Status

    kelvinA04/08/2022 at 01:19 1 comment

    This is what the first 2 designs of Teti looked like before I thought of the current one:

    The idea was to use 2020 and 2060 extrusions for the frame. The first one was going to use magnets to hold the screens at the top. I was also planning to use the RX6800XT but my human eye could only see out of stock. The image below is what I expect it to look like when all 3 screens are out, with a 27" iMac for scale:

    Anyway, the 5900X was also out of stock and the Z590I Vision D ITX just came out with the cleanest and most ideal IO I could've ever hoped for, so I switched to an 11600K + 3060Ti system and embraced the all-white I originally planned for:

    I went for black because it looked a bit cooler during the design stage. Anyway, this third design drastically simplified things, as I no longer needed an AIO or GPU riser cable and could just use the PCIe port the ITX came with along with a Noctua NH-D9L CPU cooler whilst still staying under 200mm width. This was the first concept, planned for an RTX 3070 in October 2020:

    That blue block at the bottom was magnetically attached and would've been the base for the monitor stand before I thought of making the PC case itself the monitor stand. This concept also used some older screens that never worked out. They arrived from AliExpress bent, the main 4K monitor's touch didn't work and the dual 1080p's confirmed my suspicions that I needed a resolution of 1440p+ if I wanted to work without distractions.

    Currently, the PC is sitting on the box the motherboard came in:

    I also tried the 3 screens with some filament spool boxes:

    Right now, my task list is:

    • Go through the model and add mounting screws
    • Design the screen stands / holders
      • These holders need to be able to hold them in the 3 screen setup as well as individually like a tablet stand
    • Design a kind of locking mechanism to keep the screens in place in the case
    • Add the hinges for the 3 monitor setup stands
    • Add the holders for the screen stands

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