I have few questions before acquire some of the things below, i'm already experienced in arduino evironnement but i still have this questions(all of this are for school big project that will be showcasing) :
Is Bluetooth Low Energy 4.0 Module compatible with the Mega 2560 Rev3 ?
If yes how i will connect it ?Is there differences between Mega 2560 Rev3 and Uno Rev3 exept the 54 digital input/output pins ?
Is it possible to extend the number of input and ouput pins and still can do the code like normal, instead of 52 for exemple i can do 74 for the added without bugs ?
What do you advise me to take in addition to these things i mentionned ?
And finnaly, where do i found if something is compatible with another and how to connect ?
Sincerely,