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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
Working
- Humidity Sensor
- Magnetometer
Not Working
Remove the symlink for the dtb:
rm /boot/efi/dtb
Edit the '/boot/efi/config.txt' to add the overlay
dtoverlay=rpi-sense
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/efi/dtb
Edit the '/boot/efi/config.txt' to add the overlay
dtparam=i2c_arm=on dtparam=spi=on dtoverlay=pitft35-resistive hdmi_force_hotplug=1
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
To workaround the bug and have it load automatically use:
echo hx8357d >> /etc/modules-load.d/hx8357d.conf