Phantom PCB Dual Layer Tenkeyless Electrical Board (MK)

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SKU: phantomPCB1
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Mechanical KeyboardsPhantom PCB Dual Layer Tenkeyless Electrical Board
  • 2 Layer PCB
  • 1.6mm PCB thickness
  • Copper Thickness: 1oz
  • Chemical Gold Technology
The Phantom Tenkeyless PCB is intended for do-it-yourself kits. Mechanical Keyboards Inc cannot be held liable for damage caused by this PCB board; including, but not limited to, damage from improper installation. Use at your own risk.

Detailed Instructions on Deskthority

(most of the content below from bavman on
The Phantom PCB is a custom tenkeyless board designed by bpiphany (formally PrinsValium) to be used with the teensy 2 programmable usb controller and a mounting plate. Compatible / to be used with:
  • 1.5x and 1.25x modifiers
  • Center stemmed and off-center caps lock
  • 7x Cherry spacebars
  • ISO and ANSI layouts
  • 5 extra keys above the arrow key cluster
  • Costar and Cherry stabilizers
  • 6KRO over USB
  • In-switch LED at caps/scroll lock and Filco style LEDs
  • Switch top removal without desoldering
  • LED brightness control
  • Firmware source code can be used to remap keys
Other Items You'll Need:
  • TKL Case
  • Mounting plate
  • 100 Diodes (1N4148)
  • 2 LEDs
  • 2 Resistors for LEDs
  • 2 LED stand-offs for filco-style LEDs
  • Cherry MX switches
  • A Teensy 2.0 controller with header pins
  • Stabilizers (Costar or Cherry)
Tools You'll Need:
  • Soldering iron
  • Solder
  • Wire cutter
  • Optional: Desoldering tool
  • Optional: MultiMeter

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  • With a little soldering experience I found the phantom easy to build ( is a good tutorial), and got a great TKL keyboard out of it. Fully programmable thanks to QMK firmware. Fit perfectly into the case of my old KBParadise V80 after cutting one plastic nub from the case.

    easy to build with a little soldering experience. No SMD soldering required.
    free/open-source firmware available (
    fully programmable thanks to firmware
    lots of layout options available

    - Teensy 2.0 MCU feels a little dated (little memory to flash bigger firmware builds onto)
    - All pins on the Teensy are required for the keyboard matrix and the 2 LEDs, so there are no free pins remaining and it's practically impossible to add extra hardware features like OLED displays or rotary encoders. Since I wanted audible feedback, I had to add a piezo speaker in parallel to the scroll lock LED and had to program around the limitations as best I could.

  • Awesome if you're into custom keyboards. This one is a bit of a challenge, but if you're up for it it's a great project to challenge yourself and build a beautiful custom keyboard.
    I accidentally destroyed the PCB on a KUL ES-87. Using this PCB I was able to recover the switches (clears) and re-use the case.
    On the way I learned a lot about soldering diodes and teensy's and flashing QMK onto them. BTW, this thing runs QMK just great.

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