What are some tips to reduce hand fatigue while typing for long periods?

I’m using an Apple Extended Keyboard II with a mechanical locking Caps Lock key.

For a long time, I used it with an Arduino Uno ADB→USB converter based on MCJack123/ArduinoADB, and everything worked exactly as expected.

Recently, I switched to a Pro Micro (ATmega32U4) for size reasons and installed the tmk_keyboard ADB converter. After the switch, I noticed a critical difference in how Caps Lock behaves when used to switch keyboard layouts.

⸻

Expected / Previous behavior (MCJack123/ArduinoADB)

Caps Lock state directly reflects the active layout:
*Layout #1
→ press Caps Lock (key locks)
→ switch to Layout #2
*Press Caps Lock again (key unlocks)
→ switch back to Layout #1

In other words, layout depends on the physical Caps Lock state (locked / unlocked).

⸻

Current behavior (tmk_keyboard)

The layout only changes on every second Caps Lock transition:
*Layout #1
→ press Caps Lock (locked) → Layout #2
→ press Caps Lock (unlocked) → still Layout #2

*press Caps Lock again (locked) → Layout #1
→ press Caps Lock again (unlocked) → still Layout #1

So effectively:
   •   I must press Caps Lock twice to change the layout
   •   The physical Caps Lock state no longer reliably indicates the active layout

This is very inconvenient and error-prone, especially since I use Caps Lock exclusively for input source / layout switching.

⸻

Important note
   •   Regular Caps Lock behavior works fine in TMK:
   •   unlocked → normal typing
   •   locked → Caps Lock ON (LED on)
   •   The issue only appears when Caps Lock is repurposed for layout switching

⸻

Question

@hasu Is there a way in tmk_keyboard to:
   •   Make layout switching depend on the actual Caps Lock state (locked vs unlocked), or
   •   Restore the behavior where each Caps Lock state change reliably selects a specific layout?

Id appreciate any hints / configuration options.

I have been watching "Pluribus"

I want more...

I just thought of something: the "hive" reminds me of AI. All the world's knowledge, polite, but no soul.

As for shows, we love our British police procedurals or crime shows. Watching the new seasons of Shetland, just finished the recent Trigger Point as well.

I'll see season 10 of Shetland whenever it is on Swedish television. I'd too like to see British crime dramas from time to time, but they are not the type of show I'll binge-watch: they are more for Saturday night relaxation.

Even with the shows I get obsessed with, I do try to stretch them out so I'll see at most one episode per day: that should give each episode time to sink in before the next, so that I would get more out of them.

I'm in. (icon Enter maybe?)