19/20 key numeric area keypad

About starting a group and other matters

To start a group, please pay the authorization fee to Lettuce Brother just like the 17-key numeric keyboard, which is tentatively priced at 2 yuan each.

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For information about the 17-key numeric keyboard, please visit the drawing board Dangchilettuce homepage. The most beggars 17-key + touch strip mechanical keyboard

                                 Or the most beggar numeric keyboard PRO (original CH552G mechanical keyboard)

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There is currently no suitable shell (because I actually can’t draw shells), so you are very welcome to contribute suitable shell solutions.

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A brief introduction to the keyboard

1. Adopt CH552G main control, typec interface, full-key hot swap

2. Support C to C connection for iPad Pro and other devices

3.RGB lighting and supports openRGB color adjustment

4. Please see the figure below for the specific key position introduction.

  When numlock: When not numlock:

            

5. Lighting control:

   Similar to the original numeric keyboard, it has four built-in lighting effects: spiral, up and down, left and right, and diagonal.

    You can change the effect by pressing the numeric key 5 when it is not numlock.

    Specifically: click to change the brightness, there are 4 types of brightness that can be adjusted; double-click to change the lighting effect; triple-click to change the speed.

6. The firmware flashing method is the same as the original one and will not be described again.

7. The board has been verified and can be used directly

8. The board has been built and debugged (the cal and nc in the upper left corner are silk screen errors and have been corrected in the open source file)

         

9. The attachment contains the BOM table and hex file. After welding, you can directly flash the hex file. Please also refer to the previous link for the firmware flashing tutorial.