DIY Macropad Keyboard By raspberry pi PICO and uses Micropython language. It's buttons can be set to certain keys and it is customizable since it comes in parts. No Switches and keycaps included.

sample code for 16 key

use kmk library

Passgate = KMKKeyboard()

#Passgate.matrix = KeysScanner([])

media_keys = MediaKeys()

Passgate.extensions.append(media_keys)

Passgate.col_pins = (board.GP1,board.GP2,board.GP3,board.GP5)  # 

Passgate.row_pins = (board.GP19,board.GP18,board.GP17,board.GP16)  # 

Passgate.diode_orientation = DiodeOrientation.COL2ROW

# Rotary encoder that also acts as a key

encoder_handler = EncoderHandler()

encoder_handler.pins = ((board.GP13, board.GP14, board.GP15),)

encoder_handler.map = (((KC.VOLD, KC.VOLU, KC.MUTE),),)

Passgate.modules.append(encoder_handler)

#----------------------------------

WIDTH = 128

HEIGHT = 32

CENTER_X = int(WIDTH/2)

CENTER_Y = int(HEIGHT/2)

displayio.release_displays()

SDA = board.GP8

SCL = board.GP9

#i2c = busio.I2C(SCL, SDA)

#if(i2c.try_lock()):

#  print("i2c.scan(): " + str(i2c.scan()))

#  i2c.unlock()

#print()

#display_bus = displayio.I2CDisplay(i2c, device_address=60)

#display = adafruit_displayio_ssd1306.SSD1306(display_bus, width=128, height=32,rotation=0)

WIDTH = 128

HEIGHT = 32 # Change to 64 if needed

BORDER = 2#5

#-------------------------------------------------------------------------

# Update this to match the number of NeoPixel LEDs connected to your

# WS2812B LED strips on the back

underglow = RGB(

  pixel_pin=board.GP0,

  num_pixels=18,

  val_limit=100,

  val_default=25,

  animation_mode=AnimationModes.BREATHING_RAINBOW,#SWIRL,#RAINBOW,

)

#ShortCut SOLIDWORK

SZoom_IN = KC.LSFT(KC.Z)

SZoom_OUT = KC.Z

Norm   = KC.LSFT(KC.N)

Font   = KC.LCTL(KC.P7)

Passgate.extensions.append(underglow) 

  # Passgate 16 KEY

  # ,--------------

  # |  in |  ot |  

  # |------+------+------+------|

  # |  7 |  8 |  9 |  F | 

  # |------+------+------+------|   

  # |  4 |  5 |  6 |  N | 

  # |------+------+------+------|

  # |  1 |  2 |  3 |   | 

  # |------+------+------+ Play |

  # |    0   |  . |   | 

  # |------+------+------+------|

Passgate.keymap = [

  [KC.K, KC.P2, KC.P9,KC.MPLY, 

   KC.P7, KC.P8,KC.P6,Font ,

   KC.P4, KC.P5,KC.P3,KC.ENTER,

   KC.P1, KC.P2,KC.P0,KC.BSPACE,

  ],

]

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