BluePhone (Raspberry Pi Model B Rev 2 000f) Config :
ROW_PINS = [7 , 8, 25, 24]
COL_PINS = [11, 9, 10]
HANG_PIN = 23
CreamPhone (Raspberry Pi Zero W) Config :
ROW_PINS = [19, 16, 6, 20]
COL_PINS = [11, 25, 9]
HANG_PIN = 3
RGBLED(red=4, green=14, blue=15)