Waveshare 5.5inch 2K Touch LCD Display HDMI

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Last updated 9 months ago

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Waveshare 5.5inch 2K Touch LCD Display HDMI

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Introduction

This product is a general-purpose 5.5-inch IPS display with an HDMI port and a resolution of 1440 × 2560, which is an optical bonding capacitive touch panel. Supports Raspberry Pi 4B and CM4, and can also be used as a computer monitor.

Video

Feature

5.5-inch IPS display with a hardware resolution of 1440 × 2560
10-point capacitive touch control with toughened glass panel, hardness up to 6H
Adopts the optical bonding touch technique for better use
Supports Raspberry Pi OS / Ubuntu / Kali and Retropie when working with Raspberry Pi 4B
Supports Windows 11/10/8.1/8/7 when working as a computer monitor
Supports HDMI audio output with 3.5mm jack and 4PIN header

Onboard Resources

Working With Raspberry Pi 4B

hvs_priority=0x32ff
gpu_mem=256
config_hdmi_boost=10
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=87
hdmi_drive=2
hdmi_pixel_freq_limit=268500000
#pi4:
hdmi_timings=1440 0 10 10 140 2560 0 11 2 2 0 0 0 50 0 206000000 3
#3B/ZERO needs to change to the following line of timings configuration and block dtoverlay=vc4-kms-v3d or dtoverlay=vc4-fkms-v3d
#hdmi_timings=1440 0 10 10 140 2560 0 11 2 2 0 0 0 50 0 180000000 3
disable_overscan=1
framebuffer_width=1440
framebuffer_height=2560
max_framebuffer_width=1440
max_framebuffer_height=2560
extra_transpose_buffer=2

Display Rotation

Note: Only the Raspberry Pi 4th generation controller supports display rotation. Limited by hardware, Raspberry Pi 3rd generation or zero only supports the default vertical screen display, and cannot support rotation.

Update Software Version

Raspberry Pi OS Bullseye branch needs to update the software version, other systems can skip this step.

sudo apt-get update
sudo apt-get full-upgrade

Raspberry Pi OS & Kail Display Rotation

First, check whether the KMS or FKMS driver is loaded on the system you are using. How to check: In /boot/config.txt, check whether the corresponding board has turned on "dtoverlay=vc4-kms-v3d" or "dtoverlay=vc4-fkms-v3d".

Load KMS Or FKMS Driver Use the following command for display rotation:

sudo nano /etc/xdg/lxsession/LXDE-pi/autostart
#Enter the command corresponding to the display rotation angle at the end of the autostart file, and it will take effect after restarting
#0: rotate 0 degrees; 1: rotate 270 degrees; 2: rotate 180 degrees; 3: rotate 90 degrees
xrandr -o 1

No KMS Or FKMS Driver Loaded Use the following command for display rotation:

sudo nano /boot/config.txt
#Enter the command corresponding to the display rotation angle at the end of the config.txt file, and it will take effect after restarting
#0: rotate 0 degrees; 1: rotate 90 degrees; 2: rotate 180 degrees; 3: rotate 270 degrees
display_rotate=3

Touch To Rotate

After the display rotation is performed, the touch position is not correct because the touch does not change with the display angle. Hence, we need to modify the touch.

Hardware Touch Rotate: Short press the Touch Rotate button on the bottom panel, and each short press will rotate the touch direction by 90 degrees.

If there are special circumstances that cannot be rotated by hardware, please refer to the following software to rotate the touch:

1. Install libinput.

sudo apt-get install xserver-xorg-input-libinput

If you installed the Ubuntu system or Jetson Nano. The installation instructions are:

sudo apt install xserver-xorg-input-synaptics

2. Create the Xorg.conf.d directory under /etc/X11/ (if the directory already exists, this goes directly to step 3).

sudo mkdir /etc/X11/xorg.conf.d

3. Copy the 40-libinput-conf file to the directory just created.

sudo cp /usr/share/X11/xorg.conf.d/40-libinput.conf /etc/X11/xorg.conf.d/

4. Edit the file.

sudo nano /etc/X11/xorg.conf.d/40-libinput.conf

Find the touchscreen part, add the following statement to it, and save it.

Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"

Similar to the picture below:

5. Reboot the Raspberry Pi.

sudo reboot

Complete the above steps to perform a 90-degree rotation. Note: 90-degree rotation: Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"

180-degree rotation: Option "CalibrationMatrix" "-1 0 1 0 -1 1 0 0 1"

270-degree rotation: Option "CalibrationMatrix" "0 -1 1 1 0 0 0 0 1"

Interface Optimization

Due to the high resolution of the screen, it is recommended to modify the theme to a larger size for enjoying a better touching experience. This feature is not supported on all systems. The following mainly uses the Raspbian system to describe the relevant operations, and other systems are similar.

Select Menu -> Preferences -> Appearance Settings -> Defaults -> For large screens: Set Defaults -> OK.

Set the font size of the System.

Right-click on the taskbar -> "Panel Preferences" -> "Geometry" -> "Size".

Set The Screen Always On

Some users want to display without being affected by the screen saver function, and can be set it as follows. Turn off the screen saver function. Open lightdm.conf.

sudo nano /etc/lightdm/lightdm.conf

Modify lightdm.conf to find "xserver-command" under the [SeatDefaults] section, uncomment it, and modify it as follows:

#xserver-command=X

change into

xserver-command=X -s 0 -dpms

-s # – set screen saver not enabled.
dpms - turn off power saving management.

Reboot

sudo reboot

Working With PC

Calibration touch on Windows

Take the windows10 system as an example:

1. Enter the Windows settings of the system, type in the search bar and click "Calibrate the screen for pen or touch input" (as shown in the picture below).

2. Click "Setup" in the pop-up "Tablet PC Settings" interface:
3. The following text prompt will appear on the screen. Please tap the touch screen with your finger, and the computer will recognize it as a touch screen.

【Note】If the touch screen is blank, press the "Enter" key, and the text prompt will switch to the touch screen. (The screen which displays the text prompt will be used as a touch screen!)