Where it started

I got tired of buying keyboards and then spending weeks hunting for a PCB that actually fit. The hobby is full of beautiful cases built around one specific board, and when that PCB goes out of stock or gets discontinued, the case becomes a very expensive shelf decoration.

So I started designing my own.

About the name

Sam is my cat. My first companion, my first son, at least that's how I think about him. When I started designing these PCBs, it was my first real hardware project from scratch. Naming it after him felt right. First project, first son.

The goal

One PCB that fits as many cases as possible. Not one keyboard. As many as possible. QMK and VIAL out of the box, RP2040 under the hood, and a price that doesn't make you feel bad about buying it.

Every size in the SAM line is built around the most common case dimensions in the hobby. The more it fits, the more useful it is. That's the whole point.

Where it is now

SAM has been picked up by the European keyboard community far beyond what I expected. People buy more than one, swap out the original PCB in boards they already own, and end up replacing half their collection with SAMs. The price, EU availability, and broad layout support keep coming up as the reasons people choose it over alternatives.

Someone from the community put it best: "it's not an alternative to other PCBs, it IS the PCB." From a community survey.

All the technical stuff, firmware, flashing guides, full compatibility database, lives at docs.khor.dev.

LX60 — The Dold
Costance TKL — The Dold
The future

The lineup is growing. A 65%, a 40%, and an Alice format are all in the works, some of the most requested sizes from the community, and all currently in progress. Same philosophy: fit as many cases as possible, keep the price honest.

Beyond new sizes, two new technology divisions are in development. A Hall Effect lineup using TMR technology, and an Electro Capacitive line for those who want that feel without hunting for a niche board. Both are things the community has been asking for, and things I genuinely want to build well.

µSAM

SAM started with PCBs, but the microcontroller powering them felt like the next logical step. µSAM is a Pro Micro-compatible board built around the RP2040, designed to drop into any DIY QMK-compatible keyboard.

MCURP2040 (dual-core Cortex-M0+ @ 133 MHz)
Flash16 MB QSPI
Form factorPro Micro | Elite-C
USBUSB-C (USB 2.0 Full Speed)
GPIO18 usable pins
InterfacesI2C, SPI, UART, PWM
Operational Voltage3v3 - 5v
StatusComing soon
// Pinout
[ pinout diagram ]