This project was developed to mod the Logitech K375s and use the controller on a mechanical keyboard.

In order to to that I first reverse engineered the K375s membrane and created the keys matrix. Then with that matrix I created 3 keyboard types:

• Full - 105 keys;
• TKL;
• 84 Keys;

I did not created the PCB yet, but I already wiered the switches and it works perfectly.

To create the layouts I used keyboard layout editor

To create the plates I used swillkb plate and case builder

To create the schematic and PCB I used EasyEDA

This was my first PCB design so if you find any problem, if you have any suggestion or if you have any doubt please let me know.

Also feel free to use this to create you own PCB :)

And this guide was also verry helpfull to create the PCB

• Add leds to all keys (and 2 on the device indicator keys) - for all layouts -> Done;
• Create knob option - for TKL and Full layouts -> Done for full layout;
• Use ESP8266 to control the leds - for TKL and Full layouts -> Done for full layout;
• Create new design TKL in order to use knob module;
• Code for:
  • Volume control;
  • Back light led control;
  • Battery indicator;
  • LCD info;