Twokey PCB


  • -DIY Kit – PCB & Component Parts Only
  • -Switches are not included
  • -Keys of Kings designed PCB Supports:
    • Encoder with Switch + 2 Switches
    • Cherry, Matias, & Choc Switches (Cherry Switches only with 12GA Plates)
    • Backlight Switches along with RGB Underglow
    • Piezo Buzzer for all your Buzzy Fun Sounds
    • QMK




The circuit board was designed by King Icewind and has many features for something its size:

  • Rotary Encoder with Switch
  • Support for 2 Cherry/Matias/Choc switches – Please note: Cherry Switches are only supported with the 12GA SS Plates
  • LED Backlighting
  • RGB Underglow
  • Piezo Transducer (It can make sounds!)
  • Reset Switch
  • Pro Micro MCU Board

This DIY Kit is easy to assemble featuring largely through hole components with only a few SMD.

You can fully customize the animation, brightness, and color of the RGB Underglow. The LED Backlighting for the switches is not controllable. If you wish to change the brightness or color you will need to do so with the required components (not included).

Once flashed the Twokey is setup to control Volume (Encoder Spin), Mute, Play/Pause, and Next Song. Along with controlling RGB and Sounds.

This little Kit is great for anyone that listens to music, wants a great piece on their desk, and is looking to practice their soldering skills.

Additional information

Weight N/A

PCB, PCB with Component Parts Kit

Parts List

Case Components

  • 01 x Stainless Steel Plates (Top & Bottom)
  • 04 x Stainless Steel M3 Standoff – 16mm
  • 02 x Stainless Steel M3 Standoff – 12mm
  • 10 x Stainless Steel M3 Screw – 6mm


Main Components

  • 01 x Keys of Kings – Twokey PCB 
  • 01 x Rotary Encoder (PEC11R-4015F-S0024)
  • 01 x 44m Aluminum Encoder Knob (Optional, may not be included)
  • 02 x Gateron Switch (Optional, may not be included)
  • 02 x Black Translucent Keycap (Optional, may not be included)


Circuit Components

  • 01 x Pro Micro Microcontroller
  • 01 x Reset Switch (MJTP1230)
  • 01 x Piezo Transducer (PKMCS0909E4000)
  • 02 x 10k Ohm Resistor
  • 02 x 1k Ohm Resistor
  • 01 x 330 Ohm Resistor
  • 04 x 0.1uF Capacitor
  • 02 x 0.01uF Capacitor
  • 03 x 1N4148 Diode
  • 02 x Orange LED (2.2v)
  • 04 x RGB LED (WS2812B)


What you will need

  • Soldering Iron
  • Solder
  • Safety Gear for Soldering (eye protection, ventilation, etc.)
  • Tweezers & Wire Cutters
  • Micro USB Cable
  • Good tunes and vibes
  • Twokey hex file (available on
  • Software to flash Pro Micro (QMK Toolbox recommended)
  • If desired, sand paper, polishing compound, paint, etc.



You MUST follow the directions! There is a particular order in assembly, and by not doing correctly so will result in an incomplete Twokey.

Twokey Installation Directions PDF (View & Download)



Twokey Hex File


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