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Update README.md

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cedric walter 2018-11-05 22:00:46 +01:00 committed by GitHub
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@ -39,6 +39,21 @@ Make sure you have a [compatible 4+ GB SD card](http://elinux.org/RPi_SD_cards).
The Pi needs a [2.5 Amp power source](https://www.raspberrypi.org/documentation/hardware/raspberrypi/power/README.md). Most modern USB chargers you'll have laying around will work, but an older/cheaper one may not.
## Optional features
### rotate screen: portrait and landscape mode
0 - Hit CTRL-ALT-F1 then choose finish to go to console
1 - sudo nano /boot/config.txt
2 - move all the way down to the end of the file
3 - to rotate 90° clockwise, add the line: display_rotate=1
4 - Press ctrl + o to save and ctrl + x to exit the file
Now do a reboot and you should have a screen tilted:
0 = 0 degrees (the default value)
1 = 90 degrees
2 = 180 degrees
3 = 270 degrees
## Common issues
* **I get a kernel panic on boot, or the image keeps crashing.** The Raspberry Pi is somewhat picky about about its SD cards. It's also possible the SD card has a bad sector in a critical place, and `dd` wasn't be able to tell you. Double-check that you're using [a blessed SD card](http://elinux.org/RPi_SD_cards), and try flashing the image again.