To use a Raspberry Pi to generate a clock screen that looks like this:

• Download the Python file here.
  NB as Raspian has Pygame installed for Python 2 but not Python 3 this file is intended for Python 2.
  And download the logo file here.
  If you don't want a logo then just comment out (put a # at the start of) lines 65, 68 and 69 in the Clock.pyw file.


• To stop the screen from blanking you can install xscreensaver.
  Open LXTerminal and enter the following line:
  sudo apt-get install xscreensaver
  Reboot. Then and click on start, preferences, screensaver and set the mode to "Disable Screen Saver"


• To draw antialiased lines Pygame requires the colour depth to be either 24 or 32 bits. To set this you'll need to edit the file /boot/config.txt
  You can do this from LXTerminal. Enter:
  cd /boot
  then:
  sudo nano config.txt
  add the line:
  framebuffer_depth=24
  Do not put spaces either side of the equals sign. And save the file (press ctrl+o)


• To get the file to autostart:
  Open filemanager and go to /home/pi/.config/ (you'll have to type in the .config bit as it's a hidden folder)
  Then make a folder called "autostart" In autostart make a new file and call it "Clock.desktop" Edit this file and enter the following text:
  [Desktop Entry]
  Name=Clock
  Exec=gksu python /home/pi/Desktop/Clock.pyw
  StartupNotify=false
  Terminal=false
  Type=Application
  Save the file.
  Also you'll need to edit Clock.pwy again and comment out line 65 and uncomment line 67.
  If you've saved Clock.pyw and logo.png anywhere other than /home/pi/Desktop then you'll need to edit line 67 otherwise it won't be able to find the image.


• To use with a Monitor that has a DVI input - in config.txt: hdmi_force_hotplug=1 hdmi_group=2 hdmi_mode=0x10 (for 1024 by 768, more modes listed at ...URL) displayconfig_hdmi_boost=4



• To be done - The GPIO contacts can be used to generate a 'MIC LIVE' or 'ON AIR' message.
  
  To install the GPIO package open LXTerminal and enter the following line:
  sudo apt-get install python-rpi.gpio
  And this line:
  sudo apt-get install python3-rpi.gpio
  Pinout here. NB the numbers in the Python code relate to the pin number NOT the GPIO number.
  To use the Raspberry Pi's GPIOs pypi.python.org/pypi/RPi.GPIO