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Demod LM

Build Compatibility​

This build guide is exclusively for the Demod LM, a low-profile number pad.

Parts List​

Get your parts ready:

Demod 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 a USB-C cable into the board and see if it lights up. If it doesn't light up, check that you are not using a charging-only USB-C cable.

Board lit up

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.

Lined up switch

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

Press 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.

It's best to test using the Key Tester in VIA with Test Matrix mode on, as this will let you test the top-left key, which is mapped to RGB Mode by default..

Via test matrix

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​

Keycaps and board

Add keycaps to all of the switches.

All keycaps added

Plug it in and type away!

Default Keymap​

Here's the default keymap if you need it: Demod 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 Demod 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 Demod LM already has VIA support enabled. This allows you to remap the keyboard without having to reflash the board.

For reference, the Demod 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​

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.

Disassembled case

Starting from the bottom of the case, you should see the tray with o-rings mounted on the mounting points and silicone liner on the tray.

Tray with liner and o-rings

Next, the PCB goes on top of the tray.

PCB on tray

If the Choc V2 stabilizers have been removed, reinstall them by first sticking the wire side of the stabilizer into the switch plate.

Choc V2 stabilizer insertion

Next, push the other side of the stabilizer down until it clicks into place.

Choc V2 stabilizer insertion

Repeat this process for the other stabilizers.

Place the switch support foam on top of the PCB.

Switch support foam

Then, the switch plate with stabilizers goes on top of the switch support foam.

Switch plate with stabilizers

Finally, screw in the switch plate.

info

Do not overtighten the screws, as this will cause bowing of the switch plate. The screws do not need to be tightened in very hard.

Switch plate screwed in