here is how to setup touch control on using raspberry PI and 5" elecrow touch screen.
Took me a while to figure this out and ill assume you know the SD card setup and how to login into volumio and access via webpage…
i used lemon-ssh for this on my android, probably easier on a pc using putty ssh etc.
SSH is not enabled by default even in volumio, so we need to enable it,
Enter the following into your browser: http: //volumio.local/DEV or your ip of your volumio device eg 126.96.36.199/dev
in a browser type volumio.local/ or ip address of device
select plugins and under millca choose 7" touch screen plugin Wait for the download and install can take a little bit of time here.
install these fonts via ssh sudo apt-get install fonts-ipafont NEXT sudo nano /boot/config.txt
in this file add this to the bottom line i made the effort of formatting excatly like this, as when i pasted this on phone it just made 1 long line (which im not sure if it needs to be or not)
uncomment to force a specific HDMI mode (here we are forcing 800x480!)
hdmi_group = 2
hdmi_mode = 87
hdmi_cvt = 800 480 60 6 0 0 0
dtoverlay = ads7846, cs = 1, penirq = 25, penirq_pull = 2, speed = 50000, keep_vref_on = 0, swapx $
display_rotate = 0
framebuffer_width = 800
framebuffer_height = 480
5inch HDMI LCD with Touch Panel XPT2046 (SPI, IRQ = GPIO25, CE1)
dtparam = spi = on
next make this directory via ssh again sudo mkdir /etc/X11/xorg.conf.d/ NEXT sudo nano /etc/X11/xorg.conf.d/99-calibration.conf
in this file add this
MatchProduct “ADS7846 Touchscreen”
Option “Calibration” “208 3905 288 3910”
Option “SwapAxes” “0”