Ethernet Text Clock
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Have an LCD screen connected to ethernet to show short texts.
If there is no text, show a clock.

Requirements:
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 * Ethernet (W5500)
 * LCD screen
 * (RTC)

Outline of intermediate projects
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1. Serial to Display with scrolling text ( and Time )
2. Ethernet(DHCP) to Serial Text display
3. Combine previous steps: Use Ethernet for input to Display
4. Define Commandset for dimming, clearing.