- SD UHS
- Test to see if it works with the default SPI settings. The 4K buffer is a Raspberry Pi thing. You can set buffer size for spidev’s module using:
sudo rmmod spidev
sudo modprobe spidev bufsize=8192
#permanent
echo "options spidev bufsiz=8192" | sudo tee /etc/modprobe.d/spidev.conf
- The password thing applies for Raspbian Lite images only. If you are using the desktop, it does not apply as there’s a GUI on startup to set it. You have to Google how to do it on a Mac because we don’t use anything Apple.