Datasheet

Next you can run

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

which will let you draw-test the touch screen. Go back and re-calibrate if you feel the screen isn't precise enough!

X Calibration

You can also calibrate the X input system but you have to use a different program called xinput_calibrator

You can do this if the calibration on the screen isnt to your liking or any time you change the rotate=XX module

settings for the screen. Since the screen and touch driver are completely separated, the touchscreen doesn't auto-

rotate

Normally you'd have to compile it but we have a ready to go package for you so run:

sudo apt-get install -y xinput-calibrator

https://learn.adafruit.com/adafruit-pitft-28-inch-resistive-touchscreen-display-raspberry-

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