Hi! I have a problem with my Arduino uno R3.I want put one Ethernet shield and 2 RC522 ([image] ) When I put one RC522 without Ethernet, it works perfectly but when I connect the Ethernet, the both doen't work. How can I connect another SPI devices when I have the Ehernet shield conected? Thank'…

Ethernet + 2 SPI devices

system November 13, 2013, 10:07am 3

it works but I want to read a card and after send it via Ethernet.How can I do this?

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