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Quefrency LM

Build Compatibility​

This build guide is exclusively for the Quefrency LM.

Parts List​

Get your parts ready:

Quefrency LM Kit Parts

Build Steps Summary​

  1. Inspect/Test Parts
  2. Add switches
  3. Assemble Case
  4. Board Notes

Inspect/Test Parts​

Before starting assembly of the board, check if there's any issues with the parts in the keyboard kit.

Plug in the USB-C link cable in between halves and plug in the USB-C cable from your computer to the left half. Both halves should light up. Do the same with plugging into the right half.

If both halves don't light up, check that you're plugging into the correct USB-C port (outermost ones) and that you are not using a charging-only USB-C cable.

Optional: Unscrew the switch plate and inspect that there is switch plate support foam, silicone tray liners, and o-rings on the mounting points. See Full Breakdown for more information.

Add switches​

To insert a switch, make sure the pins line up with the hotswap socket on the PCB.

Inserted switch

Then push down on the part of the switch that is above the pins until it clicks into place.

Insert switch

Add the rest of the switches.

All switches added

Test keys​

Before reassembling the case, plug the USB cable into the PCB and test all of the keys to make sure everything is working, as it'll be easier to fix switch issues now than later.

Note that the Fn key won't show up in the switch tester, as a keycode isn't sent to the computer when pressed, so to test it, hold Fn while pressing another key. For example, holding down Fn while pressing 1 will output F1 to a computer.

If a key is not working, check that the switch is inserted properly and that the pins are aligned with the hotswap socket. Sometimes, a pin can get bent during insertion, which can cause the switch to not work.

Add Keycaps​

Add keycaps to all of the switches.

All keycaps added

Plug it in and type away!

All lit up

Default Keymap​

Here's the default keymap if you need it: Quefrency LM Default Keymap

Remapping/reprogramming Board​

Looking to remap/reprogram your board? Check out our guide for remapping your keyboard.

While the bottom plates have a hole at the bottom to allow you to access the reset button to allow your Quefrency LM to be reflashed if you are using QMK, if you don't want to be flipping your board over to press reset, you can also use one of the following options when remapping your Iris:

  1. Use VIA to remap your keys. The stock firmware on the Quefrency LM already has VIA support enabled. This allows you to remap the keyboard without having to reflash the board.
  2. If you are not using VIA and are using QMK instead, use the QK_BOOT keycode to reset the keyboard to allow it to be reflashed without needing to physically press the reset button on the PCB. The default way of using QK_BOOT is by pressing Fn + R.

For reference, the Quefrency LM PCB uses a STM32G431 microcontroller.

Turning off RGB LEDs​

If you'd like to turn the RGB LEDs off, you can control the RGB settings in VIA.

Full Breakdown​

(Images coming soon)

If you want to fully unscrew the case to check the parts inside, you can unscrew the switch plate and inspect that there is switch plate support foam, silicone tray liners, and o-rings on the mounting points.