4.3inch HDMI LCD

From Waveshare Wiki
Jump to: navigation, search
4.3inch HDMI LCD
480×272
4.3inch-HDMI-LCD-1.jpg

4.3inch Resistive Touch Screen LCD, HDMI interface, Designed for Raspberry Pi
{{{name2}}}

{{{name3}}}

{{{name4}}}

{{{name5}}}

Primary Attribute
Category: OLEDs / LCDs, LCD, Raspberry Pi LCD
{{{userDefinedInfo}}}: {{{userdefinedvalue}}}
Brand: Waveshare
Website
International: 4.3inch HDMI LCD
Chinese: 4.3inch HDMI LCD
Onboard Interfaces
RPi I/Os HDMI
Related Products

Introduction

4.3inch Resistive Touch Screen LCD, HDMI interface, Designed for Raspberry Pi

More

Revisions

We update the controller of 4.3inch HDMI LCD from TFP401A to RTD2660H due to the supply reasons. RTD2660H has higher compatibility than TFP401A, however, the power consumption is also higher. Please check the version of the LCD you received.

V1:

4.3inch HDMI LCD 10.jpg

V2:

4.3inch HDMI LCD 11.jpg

Features

  • 480×272 hardware resolution
  • Resistive touch control
  • Compatible and Direct-connect with any revision of Raspberry Pi (except the Pi 1 model B or Pi Zero, which requires an HDMI cable)
  • Raspbian/Ubuntu Drivers are provided (works with your own Raspbian/Ubuntu directly)
  • When only used for display, does not occupy any I/O resources (using touch function will occupy I/O resources).
  • Backlight control to lower power consumption

Getting Started

Hardware Connection

Hardware connection for Raspberry Pi Zero
  1. Plug the LCD to your Raspberry Pi:
    • There are 40 pins on Raspberry Pi Model A+/B+/2 B/3 B but only 26 pins on the LCD, so you should pay attention to connecting the pins to your Pi accordingly.
  2. Connect the HDMI Connector to both the HDMI interfaces on the LCD and the Pi.
    • You should connect the LCD to Raspberry Pi Model B or Raspberry Pi Zero with an HDMI cable rather than an HDMI Connector.
  3. Turn on the "backlight" switch on the back of the LCD. (Only for V1 version)

Note: This product can only work on a Raspberry Pi but not work on a PC. That is, if the HDMI of the LCD is connected to the HDMI on a PC, the LCD will not display anything.

Install the touch driver

You can enable the touch in two ways: Method 1. install the driver to your Raspbian/Ubuntu Mate OS. Method 2. use the Ready-to-use image file of which LCD driver was pre-installed.

Method 1. Driver installation

Please download the latest version of the image on the Raspberry Pi official website. (Raspbian/Ubuntu Mate/Kali or Retropie)

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

2) Connect the TF card to the PC, open the Win32DiskImager. software, select the system image downloaded in step 1 and click‘Write’ to write the system image. ( How to write an image to a micro SD card for your Pi? See RPi Image Installation Guides for more details)

3) After the image has finished writing, open the config.txt file in the root directory of the TF card. Add the following code at the end of config.txt, then save and quit the TF card safely.

For V1 version
max_usb_current=1
hdmi_group=2
hdmi_mode=87
hdmi_timings=480 0 1 41 2 272 0 2 10 2 0 0 0 60 0 9009000 3
display_rotate=2
hdmi_drive=2
For V2 version
display_rotate=2
max_usb_current=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt 480 272 60 6 0 0 0
dtoverlay=ads7846,cs=1,penirq=25,penirq_pull=2,speed=50000,keep_vref_on=0,swapxy=0,pmax=255,xohms=150,xmin=200,xmax=3900,ymin=200,ymax=3900
hdmi_drive=1
hdmi_force_hotplug=1

If the LCD cannot work with commands above when connecting to Pi 4, please comment/remove the statement dtoverlay=vc4-fkms-V3D on /boot/config.txt and try again.

4) Connect the TF card to the Raspberry Pi, start the Raspberry Pi.The LCD will display after booting up, and then log in to the Raspberry Pi terminal (you can connect the Raspberry Pi to the HDMI display or log in remotely with SSH).

5) Then open the terminal of Raspberry Pi to install the touch driver which can be found in the /boot/ directory. Note: The Raspberry Pi must be connected to the network, or else the touch driver won't be successfully installed.

git clone https://github.com/waveshare/LCD-show.git
cd LCD-show/
For V1 version
chmod +x LCD43-show
sudo ./LCD43-show
For V2 version
chmod +x LCD43-show-V2
sudo ./LCD43-show-V2

Touch function will work after restart. For ease of use, you can set the screen orientation, see: #Screen orientation settings.

Method 2. Using Ready-to-use image

The image file with pre-installed driver is located in the IMAGE directory of the CD. Extract the .7z file and you will get an .img file. Write the image to your micro SD card (How to write an image to a micro SD card for your Pi? See RPi Image Installation Guides for more details). Then insert the card to your Pi, power up and enjoy it.

Screen orientation settings

After touch driver installed, the screen orientation can be set by these commands:

For V1 version:

  • 0 degree rotation
cd LCD-show/
sudo ./LCD43-show 0
  • 90 degree rotation
cd LCD-show/
sudo ./LCD43-show 90
  • 180 degree rotation
cd LCD-show/
sudo ./LCD43-show 180
  • 270 degree rotation
cd LCD-show/
sudo ./LCD43-show 270
If you are using Raspbian-lite, the commands should be
  • 0 degree rotation
cd LCD-show/
sudo ./LCD43-show lite 0
  • 90 degree rotation
cd LCD-show/
sudo ./LCD43-show lite 90
  • 180 degree rotation
cd LCD-show/
sudo ./LCD43-show lite 80
  • 270 degree rotation
cd LCD-show/
sudo ./LCD43-show lite 270

For V2 version

  • 0 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 0
  • 90 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 90
  • 180 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 180
  • 270 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 270
If you are using Raspbian-lite, the commands should be
  • 0 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 lite 0
  • 90 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 lite 90
  • 180 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 lite 80
  • 270 degree rotation
cd LCD-show/
sudo ./LCD43-show-V2 lite 270

Touch screen calibration

This LCD can be calibrated through the xinput-calibrator program. Note: The Raspberry Pi must be connected to the network, or else the program won't be successfully installed.

  • Run the following command to install:
sudo apt-get install xinput-calibrator 
  • Click the "Menu" button on the task bar, choose "Preference" -> "Calibrate Touchscreen".
  • Finish the touch calibration following the prompts. Maybe rebooting is required to make calibration active.
  • You can create a 99-calibration.conf file to save the touch parameters (not necessary if file exists).
sudo mkdir /etc/X11/xorg.conf.d
sudo nano /etc/X11/xorg.conf.d/99-calibration.conf
  • Save the touch parameters (may differ depending on LCD) to 99-calibration.conf, as shown in the picture:

5inch HDMI LCD FAQ1.jpg

Install virtual keyboard

1.Execute the following code to install the corresponding software.

sudo apt-get update
sudo apt-get install matchbox-keyboard
sudo nano /usr/bin/toggle-matchbox-keyboard.sh

2.Copy the following content to toggle-matchbox-keyboard.sh, save and exit.

#!/bin/bash
#This script toggle the virtual keyboard
PID=`pidof matchbox-keyboard`
if [ ! -e $PID ]; then
killall matchbox-keyboard
else
matchbox-keyboard &
fi

3.Execute the following code.

sudo chmod +x /usr/bin/toggle-matchbox-keyboard.sh
sudo mkdir /usr/local/share/applications
sudo nano /usr/local/share/applications/toggle-matchbox-keyboard.desktop

4.Copy the following content to toggle-matchbox-keyboard.desktop, save and exit.

[Desktop Entry]
Name=Toggle Matchbox Keyboard
Comment=Toggle Matchbox Keyboard`
Exec=toggle-matchbox-keyboard.sh
Type=Application
Icon=matchbox-keyboard.png
Categories=Panel;Utility;MB
X-MB-INPUT-MECHANSIM=True

5.Execute the following code, this step must use the "pi" user authority, if you use the administrator authority, the file will not be found.

sudo nano /etc/xdg/lxpanel/LXDE-pi/panels/panel

6.Find the code similar to the following.(the icon of different versions may be different)

Plugin {
type = launchbar
Config {
Button {
id=lxde-screenlock.desktop
}
Button {
id=lxde-logout.desktop
}
}

7. Add the following code to add a Button item, as shown below.

Button {
id=/usr/local/share/applications/toggle-matchbox-keyboard.desktop
}

RPILCD-INSTALL-KEYBOARD01.png

8. Execute the following code to restart the system, you can see a virtual keyboard icon in the upper left corner of the LCD.

sudo reboot

Interface

The pins labeled "NC" below means that those pins of Raspberry Pi are not occupied by the LCD, and the user can use them for other applications.

PIN NO. SYMBOL DESCRIPTION
1, 17 3.3V Power positive (3.3V power input)
2, 4 5V Power positive (5V power input)
3, 5, 7, 8, 10, 11, 12, 13, 15, 16, 18, 24 NC NC
6, 9, 14, 20, 25 GND Ground
19 TP_SI SPI data input of Touch Panel
21 TP_SO SPI data output of Touch Panel
22 TP_IRQ Touch Panel interrupt, low level while the Touch Panel detects touching
23 TP_SCK SPI clock of Touch Panel
26 TP_CS Touch Panel chip selection, low active

Resource

User Manual

Driver

The driver can be downloaded from github

git clone https://github.com/waveshare/LCD-show.git

Software

Image

Description: if you felt hard to install driver, try the image with driver pre-installed.

LCD Panel Dimension

FAQ

Question:
Why does the touchscreen not work well?
Answer:

Now, we only provide touch screen drivers for Raspbian and Ubuntu Mate. How to install the driver? See:#Method_1._Driver_installation


Question:
Why does the image provided on the wiki does not work on my Pi?
Answer:
  • The image provided may differ depending on batches, however, some Images are just available for Pi 2 (or before, but not for Pi 3). In such cases, you can download the latest version from Raspberry Pi website and install the driver. See:#Method_1._Driver_installation
  • Make sure the hardware connection is correct and connects fine.
  • Make sure you've written the image to your SD card using the software File:Win32DiskImager.zip rather than just copy and paste.
  • When the Raspberry Pi starts normally, the PWR light is always on and the ACT light is blinking. If you find that both lights are always on, it may be that the TF card failed to burn the image or the TF card is in poor contact with the Raspberry Pi.
  • It is strongly recommended to use a stand-alone 5V/3A power adapter because the USB port of PC might not have enough power to support the Pi and LCD.


Question:
Could I only connect the HDMI cable?
Answer:
No, the HDMI interface is only used for display. You also need to insert the GPIO for touching and power. BTW, you can also connect the external power adapter to the USB interface for power if LCD has an external power interface.


Question:
What is the working temperature of this LCD?
Answer:
The working temperature is 0°C -- 70°C


Question:
What is the working current of the 4.3inch HDMI LCD?
Answer:
When working with 5V input, the current is about 200mA with back light on and 30mA with back light off.


Question:
Can 4.3inch HDMI LCD be connected to a computer as a display screen?
Answer:
It can only support Raspberry Pi, not suitable for connecting to a computer as a monitor.



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 post a tickets.