Terminal with builtin ortholinear keyboard and touch screen as a home automation interface.


  • Step and STLs available for non-commercial use.
  • 7″ Touch Screen
  • Raspberry pi 4
  • Home assistant loads in kiosk mode.
  • 5×1 buttons to interact directly with home assistant with physical buttons


  • Customizable panels for the front, 3 in the back and a grid for custom attachments.



Bill of Materials (BOM)

Note: I chose these because I mostly already had them. There are many other choices available. Some
will be less expensive and some will work better. Some will just be different, but you might prefer
them. That’s all part of the fun.

Printed Parts

I used the Ziro Carbon Fiber PLA Filament.

Part Name Qty X size (mm) Y size (mm) STL
Screen Front 1 214 133 STL
Screen Rear 1 214 133 STL
Void30 Base Plate 1 207 111 STL
Rear Base Plate 1 211 139 STL
Pi Plate 1 106 74 STL
5×1 Front Acc Panel 1 119 22 STL
Small Front Acc Blank Panel 1 120 16 STL
Rear Large Blank Panel 1 116 107 STL
Rear Small Blank Panel 2 107 27 STL
Fan Holder (optional) 2 10 10 STL

These parts are licensed CC-BY-NC. That means you can’t charge for them, and you can’t send .stl
to a shop that charges for prints.

I have designed these to be as easy to print as possible, but if you really want to buy a printed
set, contact me and I’ll see what solutions we can find.

Raspberry Pi Components

Name Link
Screen (C) [1] https://amzn.to/3ztpCKe
Raspberry Pi 4 2GB https://amzn.to/3nM6MMq
SD Card [2] https://amzn.to/3Cx8bug
USB Drive [2] https://amzn.to/3EDvPaz
Power Supply https://amzn.to/2XvkFU4
Power Cable (USB-C on both ends) https://amzn.to/3lLiLae
Case https://amzn.to/3kqMV3l
Fan https://amzn.to/39kYTVV

[1] I have this version, which is more than a year old now. There is a newer version of the screen that looks like it has some nice features:

[2] I use a USB Drive to run the pi. If you do that too, you can just use any 8GB+ micro SD card to
get the raspberry pi booted, and then use the USB drive from then on.


Take a look at the victorlucachi/void30 repo for details.

I used an
microcontroller, which is essentially an Arduino Pro Micro with a USB-C port.


Name Link
Micro HDMI Video Cable https://amzn.to/3tWw2QZ
Micro USB Right Angle Touch Screen Cable https://amzn.to/39kEMXI
USB-C for Void30 (If you have a USB-C) https://amzn.to/3lLH9IQ
Power Cable (USB-C on both ends) https://amzn.to/3lLiLae

Make sure you get the right cable for your Void30 microcontroller. You need one that is about 6inches (15cm).


Location Size Min. Qty
Hinge M5x15mm+ 2
Hinge M5 Lockhnut 2
Screen Case M4x14mm-20mm 4
Accessory Mounts M3x6mm 18+

5×1 Front Switch Panel

You should have enough leftovers from the Void30 build. Except for the Dupont connectors.

  • Wires, 24awg-28awg should be fine. I would guess the farthest one is less than 8″ (20cm) long.
  • 5x cherry mx compatible switches
  • 5x cherry mx compatible keycaps, but I hope to release some STLs for printable ones soon.
  • 2×3 Dupont connector. If you aren’t already prepared to crimp dupont connectors, I would try to
    find a 2×3 dupont cable and just cut off the other end to solder.
  • Heat shrink. Optional, but makes these wires a little more tidy.


I have a very peculiar raspberry pi setup. If this project takes off, I would consider making a custom image for it.
But this can be accomplished with a regular raspian setup.

Until then, these are some of the key parts I used to get the software/OS side working:

  1. Home Assistant should already be running (probably on another machine).
  2. Change your user password, please.
  3. Install chromium browser. Any browser should work ok, but chromium has a kiosk mode.
    • The command I use to launch the browser is: /usr/bin/chromium-browser --kiosk --noerrdialogs --enable-features=OverlayScrollbar --disable-restore-session-state http://homeassistant:8123
  4. Use raspi-config to auto login.
  5. Disable screen savers. I do that so I can see what is on the screen without touching it. Run these commands at startup. Check to see if they work with xset q:
    xset s noblank
    xset s off
    xset -dpms
  6. Set up the buttons.py

Connected Projects

This project is very dependent on a lot of other open source and hardware projects.

  • Home Assistant let me write a few lines of code and scripts instead of thousands to get a clean interface.
  • victorlucachi/void30 made a fun keyboard that is not only a perfect fit, but it inspired some of the design choices in CAD.
  • qmk_firmare QMK Firmware is the brains of the void30 and is a pleasure to work with.
  • browser_mod makes it possible to control the display with home assistant automations.

Of course, raspberry pi, Linux, and a thousand projects related to getting a computer running on a pi are also integral.


License: CC BY-NC 4.0

This version of this project Has shapes and measurements based off of the Void30 project by @victorlucachi. That project, and
this one are licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.