Difference between revisions of "4.3inch DSI LCD"

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{{FAQ| Will the 4.3inch DSI LCD automatically turn off the backlight when the system sleeps?
 
{{FAQ| Will the 4.3inch DSI LCD automatically turn off the backlight when the system sleeps?

Latest revision as of 11:06, 25 October 2021

4.3inch DSI LCD
4.3inch-DSI-LCD-0.jpg

4.3inch capacitive Touch Screen LCD for Raspberry Pi, DSI Interface
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Primary Attribute
Category: OLEDs / LCDs, LCD, Raspberry Pi LCD
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Brand: Waveshare
Website
International: 4.3inch DSI LCD
Chinese: 4.3inch DSI LCD
Onboard Interfaces
DSI
Related Products

Introduction

4.3inch Capacitive Touch Display for Raspberry Pi, 800×480, IPS Wide Angle, MIPI DSI Interface

Features

  • 4.3inch IPS screen. 800x480 hardware resolution
  • Capacitive touch panel, support 5-point touch
  • Supports Pi 4B/3B+/3A+/3B/2B/B+/A+. Another adapter board is required for CM3/3+
  • DSI interface, refresh rate up to 60Hz.
  • Supports Raspbian/Ubuntu/Kali and WIN 10 IoT, driver free.

User guide

Hardware connection

  • Connect the DSI interface of 4.3inch DSI LCD to the DSI interface of Raspberry Pi.
  • For easy use, you can fix the Raspberry Pi on the backside of the 4.3inch DSI LCD by screws
4.3inch-DSI-LCD-2.jpg

Software setting

1) Download image (Raspbian, Ubuntu, Kali, or WIN 10 IOT) from the Raspberry Pi website. https://www.raspberrypi.org/downloads/

2) Download the compressed file to the PC, and unzip it to get the .img file.

3) Connect the TF card to the PC, use SDFormatter.exe software to format the TF card.

4) Open the Win32DiskImager.exe software, select the system image downloaded in step 2, and click‘Write’ to write the system image.

5) After the image has finished writing, save and quit the TF card safely.

6) Power on the Raspberry Pi and wait for a few seconds until the LCD displays normally. And the touch function can also work after the system starts.

Rotation

To change the orientation of the display, you can modify /boot/config.txt file as below

  • Open the file
sudo nano /boot/config.txt
  • Add the following code at the end of config.txt
  • Rotate 90 degrees
display_lcd_rotate=1
dtoverlay=rpi-ft5406,touchscreen-swapped-x-y=1,touchscreen-inverted-x=1
  • Rotate 180 degrees
display_lcd_rotate=2
dtoverlay=rpi-ft5406,touchscreen-inverted-x=1,touchscreen-inverted-y=1
  • Rotate 270 degrees
display_lcd_rotate=3
dtoverlay=rpi-ft5406,touchscreen-swapped-x-y=1,touchscreen-inverted-y=1

If you use Raspberry Pi 4, you need to remove the line: dtoverlay=cv4-fkms-V3D

  • Save and reboot Raspberry Pi
sudo reboot

Backlight Controlling

  • Open a terminal and type the following command to adjust the brightness. Note: If the command reports the 'Permission denied' error, please switch to the 'root' user mode and execute it again.
echo X > /sys/class/backlight/rpi_backlight/brightness
X can be value in range 0~255. The backlight is darkest if you set it to 0 and the backlight is set to lightest if you set it to 255
echo 100 > /sys/class/backlight/rpi_backlight/brightness
echo 0 > /sys/class/backlight/rpi_backlight/brightness
echo 255 > /sys/class/backlight/rpi_backlight/brightness
  • We also provide a example for brightness adjusting, you can download and install it by following commands:
wget https://www.waveshare.net/w/upload/3/39/Brightness.tar.gz
tar -xzf Brightness.tar.gz
cd brightness
./install.sh
After connecting, you can choose Menu -> Accessories -> Brightness to open the adjustment software
5inch-DSI-LCD-3.gif

Install virtual keyboard

Open terminal and install it by the following command

sudo apt-get install matchbox-keyboard

After installing, you can click Accessories -> Keyboard to open the keyboard.

FAQ

Question:
What is the maximum brightness of 4.3inch DSI LCD?
Answer:
400LUX


Question:
What is the overall thickness of the 4.3inch DSI LCD?
Answer:
14.00mm


Question:
Will the 4.3inch DSI LCD automatically turn off the backlight when the system sleeps?
Answer:
No, it won't.


Question:
What is the working current of 4.3inch DSI LCD?
Answer:
  • The normal working current of raspberry PI 4B alone with 5V power supply is 450mA-500mA;
  • Using 5V power supply raspberry PI 4B+4.3inch DSI LCD maximum brightness normal operating current is 700mA-750mA;
  • Using 5V power supply raspberry PI 4B+4.3inch DSI LCD minimum brightness normal operating current is 550mA-580mA;


Question:
How to adjust the backlight?
Answer:

You need to remove the resistor and wire the top pad to P1 of Raspberry Pi and control it by PWM.
4.3DSI-1.png

gpio -g pwm 18 0
gpio -g mode 18 pwm
gpio pwmc 1000
gpio -g pwm 18 X(X is in range 0~1024, 0: Darkest, 1024: brightest)



Anti-Piracy

Since the first-generation Raspberry Pi released, Waveshare has been working on designing, developing, and producing various fantastic touch LCDs for the Pi. Unfortunately, there are quite a few pirated/knock-off products in the market. They're usually some poor copies of our early hardware revisions, and comes with none support service.

To avoid becoming a victim of pirated products, please pay attention to the following features when purchasing:

RPi-LCD-Anti-Piracy.jpg

(Click to enlarge)

Beware of knock-offs

Please note that we've found some poor copies of this item in the market. They are usually made of inferior materials and shipped without any testing.

You might be wondering if the one you're watching or you've purchased in other non-official stores is original, feel free to contact us.

Support

If you require technical support, please go to the Support page and open a tickets.