I got a new Keyboard

June 18, 2026

KeyboardsReal-LifeComputer Science

I built this last year, but I'm only now finishing this post. Here is a picture of the board in action:

Keyboard Picture

The special symbols are APL-symbols. Although I don't type APL regularly, i like the aesthetics.

When building a Keyboard, several components are needed

Component
Description
CaseWhere the Keyboard lives, can be made of plastic or metal, but sometimes wood.
PCBThe Brains of the Keyboard. The switches are placed there. One differentiates between solder- and hotswap-pcbs. In the latter, the switches won't be soldered on.
KeycapsThis is where you press on. Most will be made of plastic, either ABS or PBT.
SwitchesSit between Keycaps and PCB.
StabilizersStabilizers sit along wider keys like the space-bar and ensure even motion. They have to be lubed for smooth travel.
PlateOften (but not in general) The switches are supported by a plate, such that the force of typing is not absorbed by the PCB. The choice of plate also impacts the sound of the keyboard.

I got Case and PCB together in a kit, the KBDfans Agar.

Keyboard Picture

There are several options for switches as well. Here is a brief overview:

Type
Description
Example
LinearTo press the key the pressure is constant. Often used for gaming.Cherry Red
TactileThere is a small bump when pressing a yeyCherry Brown
Cherry Blue - loud clicking sound
TopreMainly found in Hhkb-keyboards. A membrane switch with tactile feel.
MembraneThose are used in most off-the shelf keyboards.

I bought outemu silent yellow jade switches for mine; Some data:

001Type: Silent Tactile
002Actuation force: 50g
003Bottom out force: 65g
004Total travel: 3.3mm

Silent switches were a priority to be able to use my board in public spaces discreetly.

Keyboard Picture

Lube for the stabilizers:

Keyboard Picture

Several pieces of foam are placed into the case for acoustics.

Keyboard Picture