new_contents: #!/usr/bin/python
  # Author : ipmstyle, https://github.com/ipmstyle
  #        : jeonghoonkang, https://github.com/jeonghoonkang
  
  # The wiring for the LCD is as follows:
  # 1 : GND
  # 2 : 5V
  # 3 : Contrast (0-5V)*
  # 4 : RS (Register Select)
  # 5 : R/W (Read Write)       - GROUND THIS PIN
  # 6 : Enable or Strobe
  # 7 : Data Bit 0             - NOT USED
  # 8 : Data Bit 1             - NOT USED
  # 9 : Data Bit 2             - NOT USED
  # 10: Data Bit 3             - NOT USED
  # 11: Data Bit 4
  # 12: Data Bit 5
  # 13: Data Bit 6
  # 14: Data Bit 7
  # 15: LCD Backlight +5V**
  # 16: RED LCD Backlight (-)
  # 17: GREEN LCD Backlight (-)
  # 18: BLUE LCD Backlight (-)
  
  # Define GPIO to LCD mapping, Raspi pin mapping
  LCD_RS = 6 # LCD pin 4 : RS (Register Select)
  LCD_E  = 13 # LCD pin 6 : Enable or Strobe
  LCD_D4 = 19 # LCD pin 11: Data Bit 4
  LCD_D5 = 26 # LCD pin 12: Data Bit 5
  LCD_D6 = 21 # LCD pin 13: Data Bit 6
  LCD_D7 = 20 # LCD pin 14: Data Bit 7
  #LED_ON = 4
  LCD_RED = 16 # LCD pin 16: RED LCD Backlight (-)
  LCD_GREEN = 12 # LCD pin 17: GREEN LCD Backlight (-)
  LCD_BLUE = 7 # # LCD pin 18: BLUE LCD Backlight (-)
  
subject: update connection and stalk display by jh.kang