Hi all, I'm stuck with my Arduino project and hope to get some help :slight_smile: I want to build a project in which based on the ID of an RFID chip certain mp3s are played over a loudspeaker. I'm using the sparkfun mp3shield. In order to get this thing running on an Arduino Mega I had to use ju…

Double allocation of digital pins

groundFungus May 3, 2018, 6:17pm 3

Not just theoretically, but in fact. Arduino SPI reference.

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