Installing piTFT Screen 3.5"

https://learn.adafruit.com/adafruit-pitft-3-dot-5-touch-screen-for-raspberry-pi/easy-install-2

SSH into pi

cd ~
wget https://raw.githubusercontent.com/adafruit/Raspberry-Pi-Installer-Scripts/master/adafruit-pitft.sh

chmod +x adafruit-pitft.sh

sudo ./adafruit-pitft.sh

Option 4 (rotated 90 degrees)
Option 1
Yes


IN ORDER! Mine bugged out going out of order.

sudo apt install xserver-xorg

sudo apt install xinit

sudo apt install libgtk-3-0

sudo apt install xserver-xorg-video-fbdev

********

wget https://github.com/darksid3r/OctoPrint-TFT/releases/download/1.2/octoprint-tft_stretch_1.2.git2669d90-1_armhf.deb

sudo dpkg -i octoprint-tft_stretch_1.2.git2669d90-1_armhf.deb

********

sudo nano /usr/share/X11/xorg.conf.d/99-pitft.conf

In file add:

Section "Device"
Identifier "Adafruit PiTFT"
Driver "fbdev"
Option "fbdev"
"/dev/fb1" EndSection

^x
Y


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Change the OctoPrint-TFT service to output to framebuffer 1, rather than 0

sudo nano /lib/systemd/system/octoprint-tft.service

edit the command line from:
ExecStart=/usr/bin/xinit /usr/bin/OctoPrint-TFT -- :0 -nolisten tcp -nocursor
to
ExecStart=/usr/bin/xinit /usr/bin/OctoPrint-TFT -- :1 -nolisten tcp -nocursor

^x
Y


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Enable touch screen size

sudo nano /usr/share/X11/xorg.conf.d/40-libinput.conf

I added Option "TransformationMatrix" "0 1 0 -1 0 1 0 0 1" in InputClass section dedicated to touchscreens

Section "InputClass"
        Identifier "libinput touchscreen catchall"
        MatchIsTouchscreen "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
        Option "TransformationMatrix" "0 1 0 -1 0 1 0 0 1"
EndSection


*********

Manually calibrate screen

sudo TSLIB_FBDEVICE=/dev/fb1 TSLIB_TSDEVICE=/dev/input/touchscreen ts_calibrate

Head to screen and manually touch each point to calibrate the screen


*********

Edit this file:

sudo nano /etc/octoprint-tft-environment

Address: http://ocotpi.local
API key: Find your api key from the setting menu via web browser
Config file location: /home/pi/octoprint/
Theme location: /opt/octoprint-tft/styles/default/
Resolution: leave blank for 3.5"


********

Disable screen timeout

https://github.com/mcuadros/OctoPrint-TFT/issues/24

sudo nano /etc/X11/xorg.conf

Paste the following:

Section "ServerFlags"
Option "blank time" "0"
Option "standby time" "0"
Option "suspend time" "0"
Option "off time" "0"
EndSection

^x
Y
*******

Enable plugin

sudo ln -sf /lib/systemd/system/octoprint-tft.service /etc/systemd/system/display-manager.service

sudo systemctl set-default graphical.target