4.3inch DSI QLED

800x480, DSI

Features

4.3inch QLED screen, 800 x 480 hardware resolution
Capacitive touch panel, supports 5-point touch control
Toughened glass capacitive touch panel, hardness up to 6H
Supports Pi5/4B/CM4/3B+/3A+/3B/CM3/CM3+/2B/B+/A+
Directly drive the LCD by the DSI interface on the Raspberry Pi, with up to 60Hz refreshing rate
When working with Raspberry Pi, supports Raspberry Pi OS / Ubuntu / Kali / Volumio and Retropie, driver-free
When working with VisionFive 2, supports Debian, single-point touch control, and driver-free
When working with Tinker Board 2, support Linux/Android, five-point touch control, and driver-free
When working with Core3566, support Debian/Ubuntu, five-point touch control, and driver-free
Supports software control of backlight brightness

Hardware Connection

Working with Pi 4B/3B+/3A+/3B/2B/B+/A+

Use an FFC cable to connect the 4.3inch DSI QLED to the 15PIN DSI interface on the Raspberry Pi board.
For convenience, you can fix the Raspberry Pi board on the backside of the 4.3inch DSI QLED with screws and assemble the copper columns. As shown in the figure below:

Working with Pi 5/CM4/CM3+/CM3

Use a DSI-Cable-12cm cable to connect the 4.3inch DSI QLED to the 22PIN DSI1 interface on the Raspberry Pi board.
For convenience, you can fix the Raspberry Pi 5 board on the backside of the 4.3inch DSI QLED with screws and assemble the copper columns. As shown in the figure below:

Software Settings

Method 1: Use Raspberry Pi Imager to Flash Latest Official Image

For Raspberry Pi OS/Ubuntu/Kali/Volumio and Retropie systems.

1. Connect the TF card to the PC, download and use Raspberry Pi Imager to flash the corresponding system image.

2. After the image flashing is completed, open the config.txt file in the root directory of the TF card, add the following code at the end of the config.txt, save and safely eject the TF card.

dtoverlay=vc4-kms-v3d
#DSI1 Use
dtoverlay=vc4-kms-dsi-7inch
#DSI0 Use (Only Pi5/CM4)
#dtoverlay=vc4-kms-dsi-7inch,dsi0

3. Insert the TF card into the Raspberry Pi, power on the Raspberry Pi, and wait for a few seconds normally to enter the display. After the system starts, it can be touched normally.
Note: For the Bookworm system on the Raspberry Pi 5, it is recommended to manually update to the latest system version and reboot (network connection is required).

#Update the system
sudo apt-get update
sudo apt-get full-upgrade -y
#Reboot the system
sudo reboot

Method 2: Use the Pre-installed Image

1. Select the corresponding Raspberry Pi version image, download and unzip it as .img file.
Raspberry 3/4B/CM4/5 version download: Waveshare DSI LCD - Pi3/4B/CM4/5 pre-installed image
2. Connect the TF card to the PC, format the TF card with SDFormatter.
3. Open Win32DiskImager, select the prepared system image, and click "Write" to start flashing.
4. After the flashing is completed, open the config.txt file in the root directory of the TF card, find the line "[all]", according to your display model, uncomment the relevant lines to enable the DSI display, and then save and safely eject the TF card.

Note: For Pi5/CM4/CM3+/CM3, since there are two MIPI DSI display interfaces, please make sure to use the correct display interface and instructions, the DSI1 display interface is recommended by default.

Let's take the 800*480 DSI LCD display as an example:
Use DSI1 interface:

#800*480 resolution DSI LCD display
dtoverlay=vc4-kms-dsi-7inch

Use DSI0 interface:

#800*480 resolution DSI LCD display
dtoverlay=vc4-kms-dsi-7inch,dsi0

5. Insert the TF card into the Raspberry Pi, power on and start, wait for a few seconds to enter the system display, and the touch function can also work normally.

Adjust Backlight Brightness

Graphical Interface Backlight Adjustment

The following steps are based on the Trixie system:

1. Click the menu in the upper left corner, then go to "Preferences" → "Control Center", and select "Screens";

2. Go to "Screen" -> "DSI-2" -> "Brightness", select and adjust the desired backlight brightness, and finally click "Apply" to save the settings.

In the Bookworm system, this setting entry is located at "Screen Configuration" → "Screen".

Use Waveshare Backlight Adjustment Application

You can also use the graphical backlight adjustment tool provided by Waveshare:

wget https://files.waveshare.com/wiki/common/Brightness.zip
unzip Brightness.zip
cd Brightness
sudo chmod +x install.sh
./install.sh

After the installation is completed, you can open the demo in the Start Menu -> Accessories -> Brightness, as shown below:

Adjust Backlight Brightness Using Terminal

echo X | sudo tee /sys/class/backlight/*/brightness

Where X represents any number from 0 to 255. 0 means the darkest backlight, and 255 means the brightest backlight. For example:

echo 100 | sudo tee /sys/class/backlight/*/brightness
echo 0 | sudo tee /sys/class/backlight/*/brightness
echo 255 | sudo tee /sys/class/backlight/*/brightness

Display Rotation

Trixie / Bookworm Display Rotation

GUI interface rotation
The following steps are based on the Trixie system:

1. Click the menu in the upper left corner, then go to Preferences -> Control Center, and select Screens;

2. Go to Screen -> DSI-1 -> Touchscreen and check "10-0014 Goodix Capacitive TouchScreen";

3. Go to Screen -> DSI-2 -> Orientation, check the direction you need to rotate, and finally click "Apply" to complete the display and touch synchronous rotation.

In the Bookworm system, this setting entry is located at Screen Configuration -> Screen.

Note: Only Trixie/Bookworm systems support the above synchronous rotation methods. For Bullseye/Buster systems, after displaying rotation, touch rotation needs to be manually set separately.

lite version display rotation

1. Need to modify the /boot/cmdline.txt file:

sudo nano /boot/cmdline.txt

2. At the beginning of the cmdline.txt file, add the command for displaying the rotation angle: (Please note, this command needs to be on the same line, with each command separated by a space.)

video=DSI-1:800x480M@60,rotate=90

Change the display rotation angle by modifying the rotate value to 90, 180, or 270.

3. Save and restart

sudo reboot

Bullseye/Buster Display Rotation

GUI interface rotation

1. Open the "Screen Configuration" application;

2. Go to "Screen" -> "DSI-1" -> "Orientation", check the direction you need to rotate, and finally click "Apply" to complete the display rotation.

lite version display rotation

1. Need to modify the /boot/cmdline.txt file:

sudo nano /boot/cmdline.txt

2. At the beginning of the cmdline.txt file, add the command for displaying the rotation angle: (Please note, this command needs to be on the same line, with each command separated by a space.)

video=DSI-1:800x480M@60,rotate=90

Change the display rotation angle by modifying the rotate value to 90, 180, or 270.

3. Save and restart

sudo reboot

Stretch/Jessie Display Rotation

For some older systems, they do not use the vc4-kms-v3d or vc4-fkms-v3d driver modes, and the display rotation method is as follows:

1. Add a statement to the config.txt file (the config file is located in the root directory of the TF card, i.e., in the /boot folder):

display_rotate=1 #1: 90; 2: 180; 3: 270

2. Save the changes and then reboot the Raspberry Pi

sudo reboot

Touch Rotation

Bookworm Touch

If you use the graphical interface for rotation, you can tick "Touchscreen" in the screen layout editor window to synchronize the touch rotation. Please refer to the previous introduction for how to rotate the screen. For the command line rotation method, please refer to the following text:
1. Create a new file named 99-waveshare-touch.rules

sudo nano /etc/udev/rules.d/99-waveshare-touch.rules

2. Add the following lines as needed:

#90°:
ENV{ID_INPUT_TOUCHSCREEN}=="1", ENV{LIBINPUT_CALIBRATION_MATRIX}="0 -1 1 1 0 0"

#180°:
#ENV{ID_INPUT_TOUCHSCREEN}=="1", ENV{LIBINPUT_CALIBRATION_MATRIX}="-1 0 1 0 -1 1"

#270°:
#ENV{ID_INPUT_TOUCHSCREEN}=="1", ENV{LIBINPUT_CALIBRATION_MATRIX}="0 1 0 -1 0 1"

3. Save and reboot

sudo reboot

Bullseye/Buster Touch

After some systems display rotation, the touch direction is inconsistent, and you need to perform the following operations to perform touch rotation:
1. Install libinput

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

If you have Ubuntu or Jetson Nano installed. The installation code is:

sudo apt install xserver-xorg-input-synaptics

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

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

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

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

4. Edit this file

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

#Find the touchscreen section, add the corresponding rotation angle command in it, and save it
#"90° Right touch rotation:
Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"
#180° Inverted touch rotation: 
#Option "CalibrationMatrix" "-1 0 1 0 -1 1 0 0 1"
#270° Left touch rotation: 
#Option "CalibrationMatrix" "0 -1 1 1 0 0 0 0 1"
Similar to the position in the following image:

5. Reboot Raspberry Pi

sudo reboot

After completing the above steps, touch will cause a rotation.

Screen Sleep

Run the following command on the Raspberry Pi terminal and the screen will enter sleep mode:

xset dpms force off

Note: The above command is only for Bullseye and Buster systems.

Disable Touch

At the end of the config.txt file, add the following command corresponding to disabling touch (the config file is located in the root directory of the TF card, which can also be accessed via the command: sudo nano /boot/config.txt):

disable_touchscreen=1

Note: After adding a command, it needs to be restarted to take effect.

Resources

Related Resources

4.3inch DSI LCD 3D diagram

Software

Raspberry Pi Imager

FAQ

Question: How to use the 4.3inch DSI QLED on Raspberry Pi 3B?

Answer:

1. Enter the following command in the Raspberry Pi terminal:

sudo nano /boot/firmware/config.txt

2. Find the following line and comment it out:

#display_atuo_detect=1

3. Add the following two lines after "all" at the bottom:

dtoverlay=vc4-kms-v3d
dtoverlay=vc4-kms-dsi-waveshare-800x480

Question: What is the power consumption of a 4.3inch DSI QLED?

Answer:

It is powered by the Raspberry Pi DSI interface, and the power consumption is about 1.2W.

Question: What is the maximum brightness of a 4.3inch DSI QLED?

Answer:

370cd/m²

Question: What is the overall thickness of the 4.3inch DSI QLED?

Answer:

14.05mm

Question: How does 4.3inch DSI QLED use PWM to control the backlight?

Answer:

The default state allows software adjustment, it is recommended to check Software Backlight Adjustment, and you can also use the following method for PWM control of the backlight:
Rev2.1 version:
As shown in the figure, first remove the original soldered resistor, then connect the resistor's pad (left pad) to the Raspberry Pi's P1 pin. This allows the GPIO to control the backlight.

gpio -g pwm 18 0
gpio -g mode 18 pwm (The occupied pin is the PWM pin)
gpio pwmc 1000
Control brightness:
gpio -g pwm 18 X (X value is between 0~1024, 0 is the darkest, 1024 is the brightest)

PS: The default factory minimum brightness is visible, if you need to completely turn off the backlight to achieve a black screen effect, you can manually change the 100K resistor in the following figure to a 68K resistor:

Rev2.2 version:
As shown in the figure, first remove the original soldered resistor, then connect the resistor's pad (left pad) to the Raspberry Pi's P1 pin. This allows the GPIO to control the backlight.

PS: The default factory minimum brightness is visible, if you need to completely turn off the backlight to achieve a black screen effect, you can manually change the 100K resistor in the following figure to a 68K resistor:

Question: Does the screen not automatically go off, or do I have to execute a command to go into screen off mode?

Answer:

It depends on the system, if the system has hibernation, the screen will also be black. If it is the official system of Raspberry Pi, the default is about ten minutes without action to have hibernation.

Question: How to use a 4.3inch DSI QLED on Raspberry Pi 5?

Answer:

I. The hardware connection of DSI LCD and Pi5 is as follows:
1. You need to use Pi5-specific DSI Cable (Raspberry Pi official cable or Pi5-Display-Cable-200mm from Waveshare), pay attention to the gold finger orientation.
2. Prioritize the use of the DSI1 interface of the Pi5

If you use DSI0 interface, you need to add dtoverlay=vc4-kms-dsi-7inch,dsi0 in config.txt file.

II. Check DSI LCD version number
1. The latest DSI LCD version compatible with Pi5 is Rev2.2, which can be used directly;
2. If you have a previously purchased product such as Rev2.1 version (or older), due to the Pi5's power detection mechanism, it recognizes the capacitance on the DSI LCD as a false shorted condition and thus does not start the system. For this case, you can manually remove the large capacitors in the following four locations (as shown in the red circle below):

III. Software settings:
Bookworm system for Raspberry Pi. (Note that Pi5 currently only supports Bookworm, not Bullseye or Buster.)

1. Connect the TF card to the PC, download and use Raspberry Pi Imager to flash the corresponding system image.

2. After the image flashing is completed, open the config.txt file in the root directory of the TF card, add the following code at the end of the config.txt, save and safely eject the TF card.

dtoverlay=vc4-kms-v3d
#DSI1 Use
dtoverlay=vc4-kms-dsi-7inch
#DSI0 Use
#dtoverlay=vc4-kms-dsi-7inch,dsi0

3. After the flashing is completed, connect the TF card to the Raspberry Pi, start the Raspberry Pi, and log in to the terminal of the Raspberry Pi (you can connect the Raspberry Pi to the HDMI display or use ssh to log in remotely).

#Update the system
sudo apt-get update
sudo apt-get full-upgrade -y
#Reboot the system
sudo reboot

4. Wait for the system to reboot, it will be able to display and touch normally.

Note: If you use the DSI0 interface, you need to use the command dtoverlay=vc4-kms-dsi-7inch,dsi0

Question: When I run the Waveshare DSI 4.3 screen with Klipper on the Raspberry Pi 4, the screen orientation is incorrect. I need to rotate it clockwise. Could you please tell me how to do this?

Answer:

Please check the attached link for Rotation of LCD Screen orientation:

sudo nano /usr/share/X11/xorg.conf.d/90-monitor.conf

klipper https://klipperscreen.readthedocs.io/en/latest/Troubleshooting/Rotation/

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Navigation menu

4.3inch DSI QLED

Contents

Features

Hardware Connection

Working with Pi 4B/3B+/3A+/3B/2B/B+/A+

Working with Pi 5/CM4/CM3+/CM3

Software Settings

Method 1: Use Raspberry Pi Imager to Flash Latest Official Image

Method 2: Use the Pre-installed Image

Adjust Backlight Brightness

Graphical Interface Backlight Adjustment

Use Waveshare Backlight Adjustment Application

Adjust Backlight Brightness Using Terminal

Display Rotation

Trixie / Bookworm Display Rotation

Bullseye/Buster Display Rotation

Stretch/Jessie Display Rotation

Touch Rotation

Bookworm Touch

Bullseye/Buster Touch

Screen Sleep

Disable Touch

Resources

Related Resources

Software

FAQ

Question: How to use the 4.3inch DSI QLED on Raspberry Pi 3B?

Question: What is the power consumption of a 4.3inch DSI QLED?

Question: What is the maximum brightness of a 4.3inch DSI QLED?

Question: What is the overall thickness of the 4.3inch DSI QLED?

Question: How does 4.3inch DSI QLED use PWM to control the backlight?

Question: Does the screen not automatically go off, or do I have to execute a command to go into screen off mode?

Question: How to use a 4.3inch DSI QLED on Raspberry Pi 5?

Question: When I run the Waveshare DSI 4.3 screen with Klipper on the Raspberry Pi 4, the screen orientation is incorrect. I need to rotate it clockwise. Could you please tell me how to do this?

Support