User manual: Corne

TL;DR

  1. Use a USB-A to Type-C or Type-C to Type-C cable to connect your keyboard to your PC.
  2. Never unplug or plug-in the TRS/TRRS cable while the USB-C connection is still active. Doing so can cause issues. Some people experience problems even after making this mistake once, so be cautious.
  3. Download Vial to change your keymap, not Via.
  4. If switch plate bend when you insert the switches, please consider to take out the switch plate and insert the switch, then only re-assemble back. For choc version you may need to dissemble the case and push the switch from the bottom of pcb.

How to properly setup / connect your split keyboard

  1. First, connect the left and right halves of your keyboard using the TRS/TRRS cable. Ensure that the cable is fully inserted but not forced violently.
  2. Insert a USB-C (or Type-C) cable into the right side of your split keyboard.
  3. Note that you don’t need to insert a USB-C cable into both sides; only the right side requires it.
  4. Demo video.
  5.  The TRS or TRRS cable is already included. However, if you need an alternative, consider using a “3.5 to 3.5 audio cable”.

Key remap

  1. Use Vial to remap the keys. You can download the software or use web interface to remap the keys. You may refer to Basic Vial Usage and Keymap Idea to explore Vial and keymap.
  2. Auto-detected in Vial, supports Win, Linux, and Mac. Real-time key remap software without the needs of code compilation. No load json is required.


Mac users

  1. LGUI/RGUI = Windows/Command/Meta
  2.  LALT = Option
  3. RALT = Option/AltGr
  4. Further please read Keycodes Overview

 

Troubleshooting

Certain keys are not registered

Check any bent pins on your switch.

Keys not mapping

Launch one application each time. Use Vial instead of Via. Do not launch together to avoid conflict.

Master is working, slave does not registering

If you have connected it the wrong way (removed or inserted the TRS cable while the USB-C connection was still active), it is possible that your MCU is already bricked. However, you can try these steps to troubleshoot.

Reconnect the cables (remove USB-C, ensure TRS cable is fully pushed, and re-insert USB-C).

If the issue persists, try different cables or ports and consider restarting your PC.

It was working, suddenly not.

Check the MCU to ensure it is not accidentally lifted. In certain builds, the MCU is socketed rather than soldered to the PCB.