Quick, how do you wire up an SPI bus between a microcontroller and a peripheral? SCK goes to SCK, MISO goes to MISO, and MOSI goes to MOSI, right? Yeah. You’ll need to throw in a chip select pin ...

[Paul Stoffregen] was having trouble with SPI compatibility on the Arduino platform due to slaves that weren’t releasing the MISO line. His solution is to add a tri-state buffer chip to the ...