Difference between revisions of "7inch HDMI LCD (C)"
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dtoverlay=vc4-fkms-v3d | dtoverlay=vc4-fkms-v3d | ||
* Since 2021-10-30-raspios-bullseye-armhf has just been released and still exist many bugs, the bug of the KMS driver that cause the 7inch HMDI LCD(C) cannot display normally will be resolved in the next update of the Raspberry Pi mirrored version. It is recommended that users use the [https://downloads.raspberrypi.org/raspios_full_armhf/images/raspios_full_armhf-2021-05-28/ 2021-05-07-raspios-buster-armhf version] first. | * Since 2021-10-30-raspios-bullseye-armhf has just been released and still exist many bugs, the bug of the KMS driver that cause the 7inch HMDI LCD(C) cannot display normally will be resolved in the next update of the Raspberry Pi mirrored version. It is recommended that users use the [https://downloads.raspberrypi.org/raspios_full_armhf/images/raspios_full_armhf-2021-05-28/ 2021-05-07-raspios-buster-armhf version] first. | ||
− | * If the user needs to use the 2021-10-30-raspios-bullseye-armhf version, and need to use the CSI camera. Since this system uses the libcamera camera library by default, the library does not support FKMS drivers.So in addition to the above modification, you also need to install the Raspicam camera library. | + | * If the user needs to use the 2021-10-30-raspios-bullseye-armhf version, and need to use the CSI camera. Since this system uses the libcamera camera library by default, the library does not support FKMS drivers. |
+ | |||
+ | So in addition to the above modification, you also need to install the Raspicam camera library. | ||
The installation method is as follows: | The installation method is as follows: |
Revision as of 07:28, 27 November 2021
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Introduction
7-inch HDMI display, with a resolution of 1024×600 and a capacitive touch panel, which supports Raspberry Pi and can also be used as a computer monitor.
More |
Features
- 7-inch IPS screen with a hardware resolution of 1024×600.
- 5-points capacitive touch control.
- Using with Raspberry Pi, it supports Raspbian / Ubuntu / Kali / Retropie and WIN10 IoT, no need to install any drivers.
- Using as a computer monitor, it supports Windows 10 / 8.1 / 8 / 7, five-point touch, no need to install any drivers.
- Support backlight control, more power saving.
Working with PC
This LCD can support Windows 7/8 / 8.1 / 10 system.
How to use
1) Turn on the backlight switch on the back of the LCD.
2) Connect the Touch interface of the LCD to the USB interface of the PC. Wait for a while, the windows will automatically recognize the touch function.
3) Connect the HDMI interface of the LCD to the HDMI interface of the PC.
Note: When the computer is connected to multiple monitors at the same time, the touch effect of the 7inch LCD will be applied to the main screen by default. If you need to specify the touch to the secondary screen, see#Calibration touch on Win 10 PC
Adjust the backlight on the Windows
1. Download the 7C_Rev4.1_Windows backlight adjustment file and unzip it to any directory on the computer.
2. Enter the corresponding directory, double-click to open the 7C_brightness_Windows.exe software, and drag the slider to adjust the backlight.
Calibration touch on Win 10 PC
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!)
Working with Raspberry Pi
How to use
This LCD can support Raspbian / Ubuntu / Kali / Retropie and WIN10 IoT systems. When the LCD works on systems such as Raspberry Pi, the resolution must be set manually, otherwise, it will cause abnormal display. There is no such problem when the LCD works on the PC version of Windows.
Please download the latest version of the image on the Raspberry Pi official website.
1) Download the compressed file to the PC, and unzip it to get the .img file.
2) Connect the TF card to the PC, use SDFormatter.exe software to format the TF card.
3) Open the Win32DiskImager.exe software, select the system image downloaded in step 1, and click‘Write’ to write the system image.
4) 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.
max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 1024 600 60 6 0 0 0 hdmi_drive=1
5) Insert the TF card into the Raspberry Pi
6) Turn on the backlight switch on the back of the LCD.
7) Connect the Touch interface of the LCD to the USB interface of the Raspberry Pi.
8) Connect the HDMI interface of the LCD to the HDMI interface of the Raspberry Pi, power on the Raspberry Pi, and wait for a few seconds until the LCD displays normally.
【Note】
For the 2021-10-30-raspios-bullseye-armhf version, the default KMS driver needs to be modified to the FKMS driver to make the LCD display the system desktop normally.
- Modification method: Open the config.txt file in the root directory of the TF card, find the following line:
dtoverlay=vc4-kms-v3d
change into
dtoverlay=vc4-fkms-v3d
- Since 2021-10-30-raspios-bullseye-armhf has just been released and still exist many bugs, the bug of the KMS driver that cause the 7inch HMDI LCD(C) cannot display normally will be resolved in the next update of the Raspberry Pi mirrored version. It is recommended that users use the 2021-05-07-raspios-buster-armhf version first.
- If the user needs to use the 2021-10-30-raspios-bullseye-armhf version, and need to use the CSI camera. Since this system uses the libcamera camera library by default, the library does not support FKMS drivers.
So in addition to the above modification, you also need to install the Raspicam camera library.
The installation method is as follows:
cd ~ sudo apt install cmake git clone https://github.com/raspberrypi/userland cd userland ./buildme sudo cp build/bin/* /bin/
Then execute the following command to shut down the system:
poweroff
Connect the Raspberry Pi camera to the CSI interface of the Raspberry Pi, power on the Raspberry Pi again, and after the system boots, execute the following command:
Take a picture:
raspistill -o image.jpg
Take a video:
raspivid -o video.h264 -t 10000
Adjust the backlight on the Raspberry Pi(for Rev4.1 version of the 7inch HDMI LCD(C))
- Method 1
Download the file through the network, open the Raspberry Pi system terminal, and enter the following commands:
wget https://www.waveshare.com/w/upload/0/06/7C_brightness_Raspi.zip sudo unzip 7C_brightness_Raspi.zip -d ./7C_brightness_Raspi/ cd 7C_brightness_Raspi sudo chmod +x 7C_brightness_Raspi sudo ./7C_brightness_Raspi -b X # X range is 0~10, 0 is the darkest, 10 is the brightest For example:sudo ./7C_brightness_Raspi -b 10
- Method 2
Download 7C_Rev4.1_Raspberry Pi to adjust the backlight file via PC, and unzip it to any directory of Raspberry Pi. Enter the Raspberry Pi terminal and enter the following commands:
cd 7C_brightness_Raspi sudo chmod +x 7C_brightness_Raspi sudo ./7C_brightness_Raspi -b X # X range is 0~10, 0 is the darkest, 10 is the brightest For example:sudo ./7C_brightness_Raspi -b 10
About the version
Rev4.1 version
- Update the USB touch protocol to improve the compatibility.
- Brightness is adjustable by USB interface.
- Modify drive circuit for enhancing the anti-interference ability.
- Change the touch panel color to black.
Rev3.1 version
- The Rev3.1 version mainly changes the touch chip of the Rev2.2 version from GT811 to GT911. The touch effect is better, and the anti-interference ability is enhanced at the same time.
- This version is fully compatible with Rev2.1 and Rev2.2, and users can replace it with confidence.
Rev2.2 version
- Rev2.2 version mainly adds VCOM adjustable potentiometer and related circuits of electromagnetic compatibility on the basis of Rev2.1.
- This version is fully compatible with the Rev2.1 version, and users can replace it with confidence.
Rev2.1 version:
- Upgrade to IPS screen, with the larger viewing angle and the clearer display effect, I believe you will like it.
- Use standard HID protocol, you can transplant your own system conveniently.
- Using with Raspberry Pi, it supports Raspbian / Ubuntu / Kali / Retropie and WIN10 IoT, single touch, no need to install any drivers.
- Using as a computer monitor, it supports Windows 10 / 8.1 / 8 / 7, five-point touch, no need to install any drivers.
Rev1.1 version:
- Using private HID protocol, it is difficult to transplant to your own system
- Using with Raspberry Pi, you need to install a driver when the display connects to Raspbian or Ubuntu systems. and it doesn't support Kali, Retropie, and Windows 10 IoT.
Resources
Software
Backlight Control
Note: We don't recommend you to do any hardware modification, which may damage LCD if you are not good at it. So be careful when you following this manual
External guides
3D Drawings
LCD Panel Dimension
Certification
Assembly tutorial
FAQ
- Make sure that the HDMI interface of the PC can output normally.
- The PC only connects to this LCD as a monitor without others.
- You should connect the touch cable first and then the HDMI cable.
- Some PC need to be restarted to make the LCD display normally.
{{{5}}}
- Edit the config.txt and add this line at the end of the config.txt file:
hdmi_drive=1
{{{5}}}
{{{5}}}
{{{5}}}
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:
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.