Template:RPi LCD FAQ

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Revision as of 03:29, 24 November 2015 by Wiki Editorial Team (Talk | contribs)

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Question:
How to apply the RPi LCD in a custom Raspbian system mirror image?
Answer:

Configure your Pi:

sudo raspi-config
  • Select Expand Filesystem.
  • You should make sure the custom mirror image used can boot to desktop. Check the configuration: Enable Boot to Desktop/Scratch -> Desktop Log in as user 'pi' at the graphical desktop

Download LCD-show-YYMMDD.tar.gz and extract it. Copy the file LCD-show.tar.gz into your custom mirror image via the network or an U disk. Run the following commands:

tar xvf LCD-show.tar.gz
cd LCD-show/
  • For 3.2inch RPi LCD (B), run the command:
sudo ./LCD32-show
  • For 3.5inch RPi LCD (A), run the command:
sudo ./LCD35-show
  • For 4inch RPi LCD (A), run the command:
sudo ./LCD4-show
  • For 5inch HDMI LCD, run the command:
sudo ./LCD5-show

Then, wait a few minutes, the system will restart automatically. When finished, the RPi LCD is ready to use.

To switch to HDMI display, run the command:

sudo ./LCD-hdmi


Question:
The system mirror image cannot run after updated. Why?
Answer:

You should update the mirror image in the same manner as the method shown below, otherwise the system mirror image may not run after updated:

sudo apt-mark hold raspberrypi-bootloader
sudo apt-get update
sudo apt-get upgrade


Question:
Why the LCD doesn't work with my Raspbian?
Answer:
To use the LCD with the Raspberry Pi official image, driver should be installed first. Please refer to the user manual.

However, for the first testing, you may want to use our provided image directly.


Question:
Why the LCD still doesn't work with the Waveshare provided image?
Answer:
Make sure the hardware connection is correct and connects fine.

Make sure the image in TF card is burnt correctly.

The PWR will keep on and the ACT will keep blinking when the Raspberry Pi starts up successfully, in case both of the two LEDs keep on, it is possible that the image were burnt incorrectly OR the TF card were in bad contact.


Question:
Which power supply should I use?
Answer:
It is strongly recommended to use a stand-alone 5V/2A power adapter, because the PC's USB port might doesn't have enough power to support the Pi and LCD.