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Dilemma keyboard

A vertical stagger low-profile keyboard with mods.

Features

  • Heavy pinky stagger
  • MX and choc compatible
  • Reversible PCB
  • Elite-pi / Splinky / Nice!Nano compatible
  • Tenting puck footprint

Versions

There are 2 versions of the dilemma, in 2 folders:

  • dilemma, for DIY that requires an additional MCU (eg. kb2040)
  • dilemma_assembled, for PCB assembly

The Dilemma is made for rp2040, so if you go with the DIY version you should source your MCU board accordingly.

Wireless abilities

ZMK does not support input devices at the moment, and QMK does not support BLE.

However, as this is meant to be a portable keyboard, some ground work has been laid with the DIY version:

  • pinout compatible with nice!nano
  • 2 battery connectors footprints: JST, and THT
  • on / off button footprint

At this time, the assembled version does not support wireless.

BOM

The PCB can work on standalone.

Depending on which version you go with, you will need to source different items.

On top of the basic build, you can add a range of options, which require additional components:

  • 3d printed case
  • mods (eg. trackpad)

Both versions of the Dilemma require:

Part name Amount Link / source
Audio jack 2
Button, 4x4x1.5 2

DIY version

On top of the parts mentioned above, you will need:

Part name Amount Link / source
SOD123 Diodes 34 Farnell, Mouser, Aliexpress
Dilemma PCB, DIY, 1.2mm 2 See Release section
RP2040 MCU board 2 KB2040, elite-pi...
Header pins 2*12

Please note, the Dilemma is compatible only with rp2040 boards !

The release section contains the latest gerbers.

Order in 1.2mm thickness.

Assembled version

On top of the parts mentioned above, you will need:

Part name Amount Link / source
Dilemma PCB, assembled, 1.2mm 2 See Release section

The release section contains the latest gerbers with BOM and POS files.

Order in 1.2mm thickness.

Trackpad mod

This is the first mod made for the keyboard - so it can function as a standalone input device.

It uses I2C on the DIY version, and SPI on the assembled version.

The DIY version requires removing 2 resistors from the trackpad (see build guide).

When installing the trackpad mod, you will need:

Part name Amount Link / source
M3 screw, torx, 6mm 4 Conrad
M3x5x5 screw insert 4 Aliexpress
3d printed parts See mechanical folder

If building the PCBA version, you will also need:

Part name Amount Link / source
12-position FPC cable, 0.5mm pitch, same side contacts, 100mm 1 Farnell

If building the DIY version, you will also need:

Part name Amount Link / source
SOD123 Resistor, 5kOhms 2
Cables

3d printed thin case

Designed for the minimum footprint possible, while still protecting the PCB.

Part name Amount Link / source
M3 screw, torx, 6mm 6 Conrad
M3 nut 3 Conrad
Anti slip pads, 10x2mm 12 Aliexpress
3d case 1 right, 1 left See mechanical folder

The case is reversible.

It needs to be printed at 0.2mm layer height supportless specifically for the nut inserts suport-less interfaces. If you are doing a different layer height, use supports.

3d printed less-thin case with tenting pucks

Accomodates the Splitkb tenting puck, to be used with a Manfrotto tripod.

BOM:

Part name Amount Link / source
M3 screw, torx, 6mm 6 Conrad
M3 nut 3 Conrad
Anti slip pads, 10x2mm 12 Aliexpress
Tenting puck assembly 1 Splitkb
Manfrotto tripod 2 Manfrotto
3d case 1 right, 1 left See mechanical folder

The case is reversible.

It needs to be printed at 0.2mm layer height supportless specifically for the nut inserts suport-less interfaces. If you are doing a different layer height, use supports.

Build guide

https://docs.bastardkb.com/hc/en-us/sections/6848232395410-Dilemma

Support me on Patreon

If you like the keyboard, please consider helping me with Patreon: https://www.patreon.com/bastardkb

I post regular updates and hindsight on my work. I work full time on keyboard innovation, and this helps a lot !

Others / in progress

The PCB has available connectors for:

  • oled