Datasheet

Turn off Console Blanking
You may notice the console goes black after 30 minutes, this is a sort of 'power saving' or 'screensaver' feature.
Raspbian Jessie
Add the following line to /etc/rc.local
sudo sh -c "TERM=linux setterm -blank 0 >/dev/tty0"
on the line before the final exit 0
Raspbian Wheezy
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https://learn.adafruit.com/adafruit-pitft-28-inch-resistive-touchscreen-display-raspberry-
pi
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