- Changed Ethernet config from DHCP to fixed IP
 - Adding a LED on pin 3 (update fritzing schema too) to show the door
   status
 - Adding Timeout variable for future use
replace pin number by constants

 - RED
 - SWITCH_TOP
 - SWITCH_LOCKER
 - READY
 - RESET
 - ...
Correct minor bug in sketch.

now it can be compiled
debug after installation on the door

it work ;-)