QMK RC

QMK RC is a project that aims to bring the same convenience to controlling your QMK keyboard from your computer, as QMK did to programming keyboards.

Quick start

To get started with QMK RC, you need to set up the keyboard and the host. Let's start with the keyboard:

Keyboard firmware

First, fetch the QMK RC source either into your keymap, or user directory:

bash <(wget -qO- https://raw.githubusercontent.com/mmalecki/qmk_rc/latest/bin/qmkrc_fetch)

Next, add these files to the SRC list in your rules.mk and enable the necessary QMK feature:

SRC += qmk_rc.c
RAW_ENABLE = yes

And include the header in your keymap.c:

#include "qmk_rc.h"

From here on, you can start feeding the QMK RC raw HID data:

#ifdef RAW_ENABLE
#define QMK_RC_BUFFER_MAX 64
uint8_t qmk_rc_buffer[QMK_RC_BUFFER_MAX] = {};

void raw_hid_receive(uint8_t *data, uint8_t length) {
  qmk_rc_receive(qmk_rc_buffer, QMK_RC_BUFFER_MAX, data, length);
}
#endif

Flash your keyboard with the modified software, as you usually do.

Host software

The host application is distributed as an npm package. To get it installed, run:

npm -g install qmkrcd

Play time!

Now, to the fun part.

Launch qmkrcd by typing qmkrcd. It will scan the HID devices attached to the host, and attempt to find one that quacks like a QMK-supported keybaord.

Alternatively, you can have qmkrcd connect to a specified device by passing its name as an argument: qmkrcd 'foostan corne'.

If qmkrcd doesn't find your device, please open an issue on its repository.

From now on, you should be able to control your keyboard. For example, to write a string to an OLED attached to your keyboard:

curl 127.0.0.1:9916/command -XPOST \
  -H 'content-type: application/json' \
  -d '{"id":3,"data":"Hello, QMK RC!"}' -v

For a full list of built-in commands, see Commands. You can also implement your own, Custom commands.

Acknowledgments

• The QMK team for authoring an amazing piece of software
• libuv team for their test framework