In your .keymap file, include the leader key behavior definition. You typically place this in the /behaviors/ folder or directly in the keymap.
Note: In this example, tapping the Leader key followed by 'B', 'O', 'O', 'T' will trigger the bootloader.
Option 1: The "Hacker/Tech" Showcase (Best for Reddit r/MechanicalKeyboards or r/ErgoMechKeyboards)
The actual mapping is usually done in your keymap layer using the &leader behavior. Here is the correct modern way to map specific sequences:
On split keyboards, sequences inherit the "locality" of the leader key, meaning a Reset sequence will reboot the specific half of the keyboard you tapped. 2. Native PR #1380
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Clone your ZMK config repository, enable the leader key behavior, and define just three sequences:
Good news: ZMK supports it—and it’s a game-changer for reducing finger contortions.
Here are a few draft options for a post about the , tailored for different platforms and audiences.