All prices below are based 5 pieces (minimum) on: JLCPCB.

Keyboard revison 2 (PCB: $22.34, SMT: $77.29 work in progress)

PCB based on Rev 1 features, added:
- ⭐ Switch matrix is driven by IO expanders through SPI to achieve <1 ms end to end latencies.
- ⭐ Heavily increased brightness of all LEDs by having separate LED driver for each 2 columns (due to max current per chip).
- ⭐ Fixed bug with swapped GND and VCC, no more bridging needed.
TKL Case
- ⭐ Added support for magnetically attachable numpad from left or right by inserting magnets into prepared sockets.
  - I recommend N52 magnets, with those connection is strong enough to lift numpad part into air :)
  - I used these magnets 20x5x2 from exactly this store. I had bad experience with some other sellers as quality of magnets were lower than advertised.
  - You need 18 magnets in total for TKL keyboard (and another 18 for numpad).
Numpad Case
- ⭐ Created magnetically attachable numpad! :)
  - Similar design like main TKL keyboard (just without internal pillars for extra support)
  - Requires it's own microcontroller and battery in case of bluetooth usage.
  - Top part of numpad is kept empty for this moment - work in progress, meant for display and fingerprint sensor.

Keyboard revison 1 (PCB: $21.8, SMT: $30.56)