All mainline Raspberry Pi boards share the same 40 GPIO pin layout and can be used to control peripherals via the UART, SPI, and I2C buses. Things aren’t quite so simple on the Arduino side of ...

This board also features 128 MB of RAM, 8MB of Flash and the usual compliment of Arduino pins in a Leonardo-compatible layout. Also on the SoC is a PCIE bus, Ethernet, a USB 2.0 host, and an SD card.

The board itself also has some differences from ... No USB-UART (which also means no USB programming), a different pin layout (Arduino shields likely won’t fit) and more I/Os than the ATmegas ...