For the ease of use , I have a small 5″ screen that I use to test any projet with raspery pi, sepacial when it is being used as headless unit.

Not to say a lot and go directly to what you need, do the following:

  • Take your SD card out of the rasppery pi.
  • Plug it into your main computer ( I usually use MAC or Windows)
  • Go to the boot partition.
  • under the partition, you will find “config.txt” file, use your preferred text editor to changes it.
  • Input the follwoing lines:
# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1
 
# uncomment to force a specific HDMI mode (here we are forcing 800x480!)
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 800 480 60 6 0 0 0

For more details refer to this link


Leo Idraikh

Leo Idraikh

Electronics Engineer by profession learned mechanical design and Industrial design out of passion with a sparkle of programming skills in different languages

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