keymap.rb

kbd = Keyboard.new
kbd.init_direct_pins(
  # For SparkFun RP2040 ProMicro
  # https://learn.sparkfun.com/tutorials/pro-micro-rp2040-hookup-guide
  [2, 3, 4, 5, 6, 7, 8, 9,
   29, 28, 27, 26, 22, 20, 23, 21]
  # See this if you are using Adafruit Kb2040
  # https://github.com/alg0002/PRK_Firmware_keymap_rb/blob/main/Kasumigasane/KB2040/keymap.rb
)
#kbd.add_layer :default, %i[
#  KC_1 KC_2 KC_3 KC_4
#  KC_5 KC_6 KC_7 KC_8
#  KC_9 KC_0 KC_A KC_B
#  KC_C KC_D KC_E KC_F
#]
kbd.add_layer :default, %i[
  KC_7 KC_8 KC_9 KC_BSPC
  KC_4 KC_5 KC_6 KC_ENT
  KC_1 KC_2 KC_3 KC_COLON
  KC_0 KC_PLUS KC_DOT KC_SLASH
]

class RGB
  def show
    if @offed
      ws2812_fill(0, @pixel_size)
      sleep 1
      return
    end
    (1..16).each do |i|
      color =
        if i%15 == 0 then hsv2rgb(0, @saturation, @max_value)
        elsif i%5 == 0 then hsv2rgb(25, @saturation, @max_value)
        elsif i%3 == 0 then hsv2rgb(50, @saturation, @max_value)
        else 0
        end
      ws2812_set_pixel_at(i-1, color)
    end
    ws2812_show()
    #ws2812_fill(hsv2rgb(@hue, @saturation, @max_value), @pixel_size)
    sleep_ms @delay
  end
end

rgb = RGB.new(
  1,    # pin number
  0,    # size of underglow pixel
  16,   # size of backlight pixel
  false # 32bit data will be sent to a pixel if true while 24bit if false
)

rgb.add_pixel(0, 64)
rgb.add_pixel(16, 64)
rgb.add_pixel(32, 64)
rgb.add_pixel(64, 64)
rgb.add_pixel(64, 32)
rgb.add_pixel(32, 32)
rgb.add_pixel(16, 32)
rgb.add_pixel(0, 32)
rgb.add_pixel(0, 16)
rgb.add_pixel(16, 16)
rgb.add_pixel(32, 16)
rgb.add_pixel(64, 16)
rgb.add_pixel(0, 0)
rgb.add_pixel(16, 0)
rgb.add_pixel(32, 0)
rgb.add_pixel(64, 0)

rgb.effect     = :static
rgb.speed      = 22 #31  # 1-31  / default: 22
rgb.hue        = 0 # 0-100 / default: 0
rgb.saturation = 100 # 0-100 / default: 100
rgb.value      = 13  # 1-31  / default: 13

kbd.append rgb 
kbd.start!