hello, i have an ethercard and a micro sd card modules so the problem is i cant connect both of them to a single arduino uno because they need the same pins 11/12/13 my solution is to connect two boards one is a master (connect to a web server via the ethernet) the other is slave (save data to th…

connect 2 arduino uno via TX/RX

system April 26, 2018, 11:23am 5

If you do not make any code changes when you add the SD card, then it WILL interfere with the Ethernet card.

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