I have a basic question about Arduino UNO and DUE, just double checking with you to make sure I am understanding correctly.
What I need for my project is an Arduino which can receive and send ethernet commands to some ports, and send/receive Serial RS232 commands as well. Also, to handle GPIO.
Could you possibly tell me if the following sentences are correct:
Arduino UNO - I can install the Ethernet Shield and the Serial RS232 shield on top of each other. - Installing those two shields implies that I am going to lose some of the GPIO, which are used by the shields. But I can still use the other GPIOs.
Arduino DUE - Ethernet and Serial (RS232) shields are compatible with Arduino DUE. Actually if I am not mistaken Arduino DUE comes with RS232, so I won't need the SERIAL shield. - All the leftover GPIOs will still be available when the Ethernet shield (and eventually the Serial one) are in place.
I saw on the market and Arduino UNO with ethernet on it. Is that an official Arduino board?
Thanks for your help!