Spacecentricity is a maximalist modal keymap built around a modified Dvorak base, heavy thumb usage, and mirrored layers for navigation, Vim‑style editing, and programming. It emphasizes home‑position access to high‑frequency characters and movement keys — arrows, numbers, symbols, and common programming n‑grams — through macros and tap dances. Key redundancy provides alternative ways to perform the same actions, helping reduce strain and fatigue.
Each layer includes its own RGB matrix pattern, making it easy to see which layer is active at a glance.
Note
See design notes for deeper explanations of key placement and layer philosophy.
The Inland MK-47 is an affordable 47‑key ortholinear mechanical keyboard sold by Micro Center. Despite its low price, it includes features usually found on enthusiast‑grade boards:
- QMK-compatible firmware (fully programmable)
- VIA support for on‑the‑fly keymap editing
- Per‑key RGB lighting
- Hot‑swappable switch sockets
- USB‑C wired connection
The MK‑47 has become a popular entry‑level option for people interested in experimenting with custom firmware, unusual layouts, or switch testing without spending much. Its compact footprint also makes it a convenient one‑piece travel or backup board — it even fits neatly inside a Nintendo Switch carrying case, which makes it easy to throw in a bag. Some users also repurpose the Planck form factor as a macropad.
The MK‑47 is typically an in‑store Micro Center exclusive, but it’s occasionally available for shipping within the U.S. depending on stock. If you don’t live near a Micro Center, checking eBay and similar marketplaces is often worthwhile, as units show up there fairly regularly.
Tip
Not familiar with Planck keyboards? See this brief video by Jack Humbert introducing the Planck.
Each layer is presented as a rendered diagram generated with keyboard-layout-editor.com for quick visual reference.
Important
On macOS, this keymap is designed to be used with the ABC – Extended input source. Other layouts may alter how Option‑based characters or dead‑key sequences behave, leading to inconsistent output. Apple provides this input source for English‑language users who need a more complete set of diacritical marks and international symbols without switching to a separate language layout. This input source does not interfere with standard system shortcuts.
Because Linux and Microsoft Windows accept Unicode directly from HID, the standard US layout works correctly when the keyboard is used in those modes.
This keymap uses QMK’s quad‑tap dance pattern, allowing up to four distinct actions per key:
| Position | Action |
|---|---|
| 1 | Tap |
| 2 | Double Tap |
| 3 | Tap-and-Hold |
| 4 | Hold |
Note
Triple‑tap actions are supported but not shown in the diagram because they are used only for rare or “deep‑storage” functions. When a key includes a triple‑tap action, it is mentioned in that key’s description.
Most layer keys are momentary holds.
The Lower and Upper keys behave the same, but you can lock them with tap‑and‑hold and unlock with a tap back to Base.
The top-right corner key is a semantic Backspace, available on multiple layers:
| Action | Behavior | Notes |
|---|---|---|
| Tap | Delete previous character | Sends Backspace |
| Tap-and-Hold | Delete to beginning of line | Implemented as LSFT‑LCTL‑Left → Backspace |
| Hold | Delete previous word | macOS: LALT-Backspace; Linux/Microsoft Windows: LCTL-Backspace |
| Action | Behavior | Notes |
|---|---|---|
| Tap | Esc |
|
| Tap-and-Hold | Close Active Window | macOS: CMD‑W; Linux/Microsoft Windows: Alt-F4 |
| Hold | Momentary Layer macOS | Activates macOS layer while held; returns to Base on release |
The bottom‑left corner key toggles special modes:
| Action | Behavior |
|---|---|
| Tap | Mouse Layer |
| Hold (≈350 ms or longer) | Function layer (F1–F12) |
This key is not momentary — it switches layers rather than holding them.
The media cluster lives out of the way on the bottom left. Note that Mute Tab (Ctrl‑M on hold) works in Firefox and Firefox‑based browsers, but not in most Chromium‑based browsers. Screen‑brightness controls sit on Tap‑and‑Hold for convenient access from the top layer.
The * key emits ×(multiplication, not the letter x) on triple tap.
The navigation cluster emits the arrow symbols on triple tap: ←, ↓, ↑, →.
Tap the HELD key when this layer is locked to return to Base.
Hold 1–6 for hexadecimal A–F.
Momentary hold 0 to access Adjustment layer to change keyboard settings.
Tap the HELD key when this layer is locked to return to Base.
The Caps key provides three related text-entry modes, each with its own visual indicator on the Base layer:
| Action | Behavior | Base RGB | Notes |
|---|---|---|---|
| Tap | Activates Caps Word |
🟡 Golden yellow | Auto‑disables after 5 seconds of inactivity |
| Double Tap | Toggle SCREAMING_SNAKE_CASE |
🟢 Neon mint | Auto‑disables after 5 seconds of inactivity |
| Hold | Toggle Caps Lock |
🔴 Blinking red | Must be manually turned off |
Tip
Caps Word temporarily capitalizes letters as you type and automatically turns itself off at the end of the word, making it ideal for acronyms, identifiers, and short uppercase sequences without toggling Caps Lock. See the QMK documentation for more information.
SCREAMING_SNAKE_CASE behaves similarly to Caps Word, but transforms the spacebar into _ and is intended for constant identifiers commonly used in C‑style languages and shells.
The top-right corner key provides a forward delete, analogous to the Base layer’s semantic Backspace:
| Action | Behavior | Notes |
|---|---|---|
| Tap | Delete next character | Sends Del |
| Tap-and-Hold | Delete to end of line | Implemented as LSFT‑LCTL‑Right → Del |
| Hold | Delete next word | macOS: LALT‑Del; Linux/Windows: LCTL‑Del |
Directly above the HELD key lives a prose‑oriented semantic punctuation key. It emits punctuation‑space bigrams, and for sentence‑ending marks it automatically capitalizes the next alphabetic character.
| Action | Behavior | Notes |
|---|---|---|
| Tap | ,␣ (comma-space) |
Mid-sentence separator |
| Double Tap | !␣ (exclamation-space) |
Triggers auto-capitalization |
| Tap-and-Hold | ?␣ (question-space) |
Triggers auto-capitalization |
| Hold | .␣ (period-space) |
Triggers auto-capitalization |
Smart quotes live on the lower row, inserting paired curly quotes with the cursor centered for fancy, typographic writing. Tap for double smart quotes; hold for single smart quotes. Use these macros if you prefer not to rely on OS‑ or app‑level substitutions.
The . key remains in the standard Dvorak position but includes additional dot‑related tap dances:
| Action | Behavior |
|---|---|
| Tap | . (dot/period) |
| Double Tap | … (horizontal ellipsis) |
| Tap-and-Hold | ⋮ (vertical ellipsis) |
| Hold | • (bullet) |
| Triple Tap | · (centered dot) |
Additional triple‑tap symbols: + → × (multiplication, not the letter x), [ → ≤, ] → ≥.
Note
On macOS mode, the vertical ellipsis (⋮) has no direct keyboard shortcut and is produced with a macro that uses compact the Emoji & Symbols popover. On Linux and Microsoft Windows modes, the Unicode character is sent directly.
This keymap includes optional Leader Replay support, allowing you to repeat recent or favorited Leader actions using holds of the number keys (0–9).
Replay functionality can be enabled or disabled with the @ toggle key, and the same key also switches between History and Favorites replay modes.
See LEADER.md for full details.
The OS MODE key switches the keyboard’s active operating‑system profile. It adjusts copy/paste behavior, special symbol mappings, and virtual desktop/workspace navigation to match the selected OS.
The backlight color indicates which OS is currently active:
| Color | OS |
|---|---|
| 🔵 Blue | Apple macOS (Default) |
| 🟢 Green | Linux |
| 🔴 Red | Microsoft Windows |
Warning
Linux and Microsoft Windows behavior is currently untested!
I’m unlikely to test Windows myself, but the functionality is included for completeness.
Provides F1–F12 and modifier combinations for shortcut execution. The home and top rows mirror the Upper layer’s number layout, and the lower row includes a redundant, standard linear layout for familiarity and ease of use.
Spanish punctuation and combining diacritics sit on the home row for light multilingual support.
The bottom-left corner key activates mnemonic Leader sequences. See LEADER.md for the full list of available actions.
Center Keys
| Action | Behavior |
|---|---|
| Tap | ? |
| Double Tap | ¿ |
| Tap-and-Hold | ˋ (combining grave) |
| Hold | ´ (combining acute) |
Ring-Finger Keys
| Action | Behavior |
|---|---|
| Tap | ! |
| Double Tap | ¡ |
| Tap-and-Hold | ˜ (combining tilde) |
| Hold | ¨ (combining umlaut) |
Lower Row Accent Keys
| Action | Behavior |
|---|---|
| Tap | ˆ (combining circumflex) |
| Double Tap | ¯ (combining macron) |
| Tap-and-Hold | ˘ (combining breve) |
| Hold | ˇ (combining caron) |
Warning
On macOS, the lower row combining marks rely on the ABC – Extended input source. Other layouts do not provide the required dead‑key sequences and will produce incorrect output.
Application Switching
Hold the center key to activate the application switcher. macOS uses CMD; Linux and Microsoft Windows uses LALT.
Tap Tab or Shift–Tab on the bottom row to navigate.
These layers provide ergonomic access to common Vim navigation, window management, and viewport‑control commands, optimized for modal editing.
Movements that interact with counts (<number>movement) intentionally omit the Esc prefix to preserve numeric prefixes and avoid breaking repeatable motions.
Home Row Navigation Cluster
| Action | Behavior |
|---|---|
| Tap | Move backward/forward by WORD; move down/up in a wrapped line |
| Double Tap | Jump to end of previous/next WORD |
| Tap-and-Hold | Navigate backward/forward through the edit list; unindent/indent current line |
| Hold | Navigate backward/forward through the jump list |
WORD and wrapped‑line motions omit the Esc prefix to maintain compatibility with <count>‑prefixed movements.
Bottom Row Navigation Cluster
| Action | Behavior |
|---|---|
| Tap | Change active window split (left / down / up / right) |
| Double Tap | Resize active window split (decrease width / decrease height / increase height / increase width) |
| Tap-and-Hold | Switch active tab (first / previous / next / last) |
| Hold | Switch active buffer (first / previous / next / last) |
Window‑resize commands omit the Esc prefix to preserve compatibility with <count>‑based resizing.
Center Navigation Cluster
| Actions | Behavior |
|---|---|
| Tap | zt, zz, zb (scroll viewport to top / center / bottom) |
| Hold | H, M, L (move cursor to top / middle / bottom of screen) |
Semantic Deletion Key
| Action | Behavior | Notes |
|---|---|---|
| Tap | db (delete previous word) |
Moves right one column to mimic standard OS word‑deletion behavior |
| Double Tap | dB (delete previous WORD) |
Also includes the right‑movement for consistency |
| Tap-and-Hold | d^ (delete to beginning of line) |
Deletes everything back to the first non‑whitespace character |
| Hold | d$ (delete to end of line) |
Deletes everything to the right of (and under) the cursor |
Folds
| Actions | Behavior |
|---|---|
| Tap | za (toggle fold under cursor) |
| Tap-and-Hold | zM (close all folds in buffer) |
| Hold | zR (open all folds in buffer) |
Paired characters (quotes, brackets, braces) automatically place the cursor inside. This is the primary purpose of the layer, since these keys sit directly under the home row. Many editors and IDEs already provide similar behavior, so this layer is optional.
C‑style programming keywords and operators are included for completeness. Many n‑grams insert with smart spacing before and/or after to match typical coding style and reduce keystrokes.
The camelCase / PascalCase and snake_case / SCREAMING_SNAKE_CASE keys toggle temporary case modes.
An optional convenience layer centered on left‑hand navigation (Home, Page Up, Page Down, End under the home row) and a handful of shell‑adjacent shortcuts. The “terminal keys” are intentionally lightweight — more for comfort and fun than necessity — since shell history, aliases, and muscle memory usually handle most workflows.
The center-thumb key (spacebar) opens core macOS functionality:
| Action | Behavior |
|---|---|
| Tap | Toggle Spotlight Search |
| Double Tap | Toggle Emoji & Symbols Menu |
| Hold | Open Finder |
The right‑thumb key provides quick file‑deletion actions:
| Action | Behavior |
|---|---|
| Tap | Delete selected item(s) |
| Double Tap | Open the Trash folder in Finder |
| Hold | Empty the Trash (Finder); open clear browser data menu (Firefox, Chromium) |
The top‑right corner key handles screen-capture shortcuts:
| Action | Behavior |
|---|---|
| Tap | Partial screenshot |
| Tap-and-Hold | Opens all screenshot options |
| Hold | Full screenshot (all displays) |
The center key provides window and device controls:
| Action | Behavior |
|---|---|
| Tap | Toggle application full-screen mode |
| Hold | Lock Mac / iDevice |
This layer is typically accessed with a left‑palm tap on Base, using a taller keycap (flat SA Row 3) for easier targeting while keeping the hands in home position for quick entry and exit.
An optional compact gaming layer modeled after vanilla Doom (1993), built around a tight movement cluster, dedicated strafing keys, and thumb‑based actions for firing, opening doors, and running. Quick weapon switching is handled through the Upper layer, and the layout also works as a simple arrows‑plus‑mouse‑keys mode using traditional T‑shaped clusters for general navigation.
This keymap supports several lightweight, real‑time text‑transformation modes that modify characters as you type. These modes are designed for programming, documentation, and command‑line workflows, and all of them automatically disable after a short period of inactivity.
| Mode | Description | Typical Use |
|---|---|---|
| Caps Word | Temporarily capitalizes letters and ends automatically at word boundaries | Acronyms, identifiers, short uppercase sequences |
For more information, refer to the QMK documentation.
| Mode | Description | Typical Use |
|---|---|---|
camelCase |
Swallows separators and capitalizes the next letter | Java, JavaScript, Go, JSON |
PascalCase |
Like camelCase, but capitalizes the first letter | Type names, classes |
snake_case |
Converts separators into _ |
Python, Rust, C identifiers |
SCREAMING_SNAKE_CASE |
Uppercase snake_case with _ separators |
Constants, shell environment variables |
kebab-case |
Converts separators into - |
Filenames, URLs, CLI flags |
dot.case |
Converts separators into . |
Namespaces, config keys, long filenames |
path/to/case |
Converts separators into / |
File paths, import statements |
PUNC mode |
Capitalizes the next character after punctuation | Sentence starts, documentation, prose |
The spacebar applies the correct separator or capitalization for the mode.
These case modes are:
- Temporary
- Disables after a preset idle timeout (5 seconds)
- End automatically when pressing
Enter,Super/CMD, etc.
- Deterministic (no buffering or rewriting)
- Separator‑aware (dash, dot, slash, underscore)
- Compatible with tap‑dance, mod‑tap, and macros
This keymap is maintained outside the QMK source tree. To use it, create a symbolic link inside your local QMK checkout so QMK can see it as a normal keymap.
mkdir -p ~/your/preferred/path/ # Optional: create a directory
cd ~/your/preferred/path/
git clone https://github.com/LittleWalter/spacecentricity-mk47cd ~/qmk_firmware/keyboards/inland/mk47/keymaps # Inland MK-47 keymaps path
ln -s /path/to/this/planck/repo <your-keymap-name> # link the repoln -s ~/projects/mk47-spacecentricity \
~/qmk_firmware/keyboards/inland/mk47/keymaps/spacecentricityqmk compile -kb inland/mk47 -km spacecentricityqmk flash -kb inland/mk47 -km spacecentricityTip
To enter bootloader mode and install the new firmware, hold the top-left key down while plugging the keyboard in. Alternatively, press the key assigned to QK_BOOTLOADER/QK_BOOT on the keymap.
This repo includes small POSIX‑compliant scripts in scripts/ that automate common tasks, including:
- Creating and removing the symlink in your QMK checkout
- Building and flashing the keymap
- Cleaning previous build artifacts
- Checking QMK paths and symlink status
These scripts are entirely optional — the build script simply wraps QMK’s CLI — but they streamline common workflows if you prefer a single‑command interface and want to reduce repetitive steps and cognitive overhead.
Note
For details on available scripts and how to use them, see the
README in scripts/.
This keymap is actively maintained and may evolve over time as layouts, layers, and features are refined, added, or removed.
Most layers are fairly stable at this point, but some of the more specialized/optional ones (such as Terminal and Programming) may be reworked, consolidated, or removed as the design continues to mature.
This keymap has not been tested on Linux or Microsoft Windows operating systems.