AdaptBoard keypad

Custom macropad with swappable modules, based on Key Boar 2040.

Features

• swappable modules
• 4x5 customizable grid
• serial communication

Different modules

• key switch module
• potentiometer module
• slide potentiometer module
• lcd module
• joystick module

Parts list

Base of the keypad

• Kee Boar 2040
• Analog multiplexer
• custom PCB
• 3D printed case
• pin header*
• pin header* for KB2040 and Analog multiplexer
• any USB-C cable

Modules

• keyboard switch (any standard keyboard switch should work)
• potenciometr*
• linear potenciometr*
• analog multiplexer*
• joystick*
• OLED display*
• pin socket* 02x04
• 3D printed keycaps

_{*link to Czech e-shop. You may buy elsewhere, just make sure it is the same part model}

Build your own

for required parts see Parts list Once you have all the parts, you can start building your own AdaptBoard keypad.

Soldering

1. Solder pin headers to the Kee Boar 2040 and to the Analog multiplexer
2. Solder first batch of headers to the custom PCB
3. Trim the headers on the Kee Boar 2040 and Analog multiplexer, so they are ~1mm above the PCB Then solder the Kee Boar 2040 and Analog multiplexer to the back side of the PCB
4. Solder the remaining headers to the PCB

Assembling

@TODO

Programming

1. Install CircuitPython on your Kee Boar 2040 Developed and tested on CircuitPython version 8.2.7
2. Delete the code.py file from the CIRCUITPY drive
3. Upload our firmware to the CIRCUITPY drive The final file structure should look like this:

CIRCUITPY
    analog_signal_processor.py
    boot_out.txt #circuitpy system file
    functions.py
    /lib
        /adafruit_display_text
        /adafruit_hid
        adafruit_pixelbuf.mpy
        neopixel.mpy
    main.py
    ssd1306_display.py

4. Go to our App and create your own layout and configuration