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Rhymestone 40% Split Keyboard Kit

KEEBD Rhymestone Split Ortholinear

The KEEBD Rhymestone Split is a compact 40-key ortholinear keyboard kit designed for hobbyists who want to build and customize a split keyboard. It suits users comfortable with assembling their own device and those who prefer a minimal layout for efficient desk space use. This board is good if you want a highly customizable split keyboard with OLED displays and hot-swappable switches, but less ideal if you need a fully assembled or wireless option.</p... Read more
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Compare KEEBD Rhymestone Split Ortholinear vs Keychron C0 HE vs MMD KM40 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
KEEBD Rhymestone Split OrtholinearKeychron C0 HEMMD KM40
Rhymestone 40% Split Keyboard Kit
62
Keychron C0 HE One Handed Magnetic Switch Gaming Keyboard
82
MMD KM40 - 40% Wireless Aluminium Keyboard
0.0 (0)
3.8 (4)
5.0 (4)
  • Released in 2022
  • Has Tactile switch options
  • Offers Split ergonomics
  • Includes a Yes display
  • Made with a Acrylic, Plastic case
  • Has Linear, Tactile, Clicky, Magnetic switch options
  • Compatible with both Mac and Windows
  • Utilizes Hall effect sensors
  • Uses a Tray Mount mounting style
  • Supports Wired, Wired only connectivity
  • Runs at a 8000 Hz polling rate
  • Weighs about 450 g
  • Sized at 39 x 149 x 245 mm
  • Made with a Plastic case
  • Features ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Has Linear, Tactile switch options
  • Connects via USB-C
  • Supports QMK firmware
  • Supports VIA configuration
  • Uses a Gasket Mount mounting style
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 2000 mAh battery
  • Weighs about 620 g
  • Made with a Aluminum case
  • Features PBT keycaps
Scores
  • Performance: 41.8
  • Build Quality: 44
  • Productivity: 51.2
  • Customizability: 74.4
  • Portability: 63.5
Scores
  • Performance: 85.6
  • Build Quality: 57.1
  • Productivity: 58.8
  • Customizability: 59.7
  • Portability: 67.2
Scores
  • Performance: 61.3
  • Build Quality: 82.7
  • Productivity: 69.5
  • Customizability: 84.3
  • Portability: 84.1
Name
KEEBD Rhymestone Split Ortholinear
Name
Keychron C0 HE
Name
MMD KM40
Release year
2022
Release year
2026
Release year
2026
Switch Options
Tactile
Switch Options
Linear, Tactile, Clicky, Magnetic
Switch Options
Linear, Tactile
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
40%
Layout Size
40%
Layout Size
40%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Split
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Connection
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
8000 Hz
Polling Rate
-
Battery capacity
-
Battery capacity
-
Battery capacity
2000 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
-
Mount Style
Tray Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb
Case Colors
Case Colors
Case Colors
Case Material
Acrylic, Plastic
Case Material
Plastic
Case Material
Aluminum
Keycaps Material
-
Keycaps Material
ABS
Keycaps Material
PBT
Dimensions
-
Dimensions
39 x 149 x 245 mm
Dimensions
-
Weight
-
Weight
450g
Weight
620g
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Product Description

The KEEBD Rhymestone Split is a compact 40-key ortholinear keyboard kit designed for hobbyists who want to build and customize a split keyboard. It suits users comfortable with assembling their own device and those who prefer a minimal layout for efficient desk space use. This board is good if you want a highly customizable split keyboard with OLED displays and hot-swappable switches, but less ideal if you need a fully assembled or wireless option.

Key Features

  • Split 40% ortholinear layout offers a compact and ergonomic typing experience, reducing finger travel and promoting uniform key spacing.
  • Hot-swappable Kailh sockets allow easy switch replacement without soldering, enabling quick customization of typing feel and sound.
  • Dual .91" OLED displays provide real-time visual feedback, useful for layer indication or custom status information.
  • Includes TRS and TRRS sockets with a TRS cable for wired connectivity between halves, supporting a clean split setup.

Build Quality

  • Comes as a kit with FR4 switch plates and acrylic bottom and cover plates, balancing rigidity with lightweight construction.
  • Uses brass standoffs for stable mounting and assembly, contributing to a solid feel despite the lightweight materials.
  • Requires user-supplied Pro Micro controllers and MX switches, allowing full control over component selection.

Compatibility and Firmware

  • Precompiled firmware is available, simplifying initial setup for users familiar with keyboard programming.
  • Supports MX-compatible switches and keycaps, providing broad customization options.
  • Unknown OS compatibility specifics, but likely supports common platforms given standard controller use.

Trade-offs

  • Requires assembly and soldering for some components, which may not suit users seeking a ready-to-use keyboard.
  • No wireless connectivity, limiting use to wired setups only.
  • Minimal 40-key layout may not support all key functions without layer programming, potentially increasing learning curve.
  • Optional RGB LEDs and hot-swap headers require additional parts and setup, adding complexity.

Frequently Asked Questions (FAQ)

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