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Raspberry Pi HATs

This page will be used to document using various HATs on the Raspberry Pi. Please feel free to add notes pertaining to other HATs or additions to the existing entries.

Sense Hat

Remove the symlink for the dtb: (note that the link will be recreated on kernel upgrades, so dtoverlay settings will not work until the dtb link is removed)

rm /boot/dtb

Edit the '/boot/efi/config.txt' to add the overlay



  • Humidity Sensor (hts221)
  • Barometer (lps25h)
  • Magnetometer (lsm9ds1_magn)
  • Temperature (hts221, lps25h)

Not Working

  • 8x8 LED matrix display
  • Small 5 button joystick

Adafruit PiTFT Plus (3.5 inch Resistive Touch screen)

To use the screen you will need to install 'bcm283x-firmware-20191118-1.68ec481.fc31' or later. To use the touch features of the screen you also need to install 'kernel-5.4.0-0.rc8.git0.1.fc32' or later.

Remove the symlink for the dtb

rm /boot/dtb

Prevent the symlink from being recreated on kernel upgrade.

echo "FirmwareDT=True" >> /etc/u-boot.conf

Edit the '/boot/efi/config.txt' to add the overlay


Add to the kernel parameters

fbcon=map:10 fbcon=font:ProFont6x11

Due to a bug the kernel module will not load automatically. On boot the module can be loaded with:

modprobe hx8357d

Due to a bug with the VC4 driver you will also need to blacklist it:

echo "blacklist vc4" >> /etc/modprobe.d/blacklist-vc4.conf

To workaround the bug and have it load automatically use:

echo hx8357d >> /etc/modules-load.d/hx8357d.conf