Difference between revisions of "7inch HDMI LCD (C)"

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*Support backlight control, more power saving.
 
*Support backlight control, more power saving.
  
== '''Instructions''' ==
 
==='''Working with PC'''===
 
  
This LCD can support Windows 7/8 / 8.1 / 10 system.
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=='''Working with PC'''==
  
How to use:
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==='''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.
 
1) Turn on the backlight switch on the back of the LCD.
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Note:  
 
Note:  
When the computer is connected to several different displays at the same time, only this LCD can be used to control the cursor on the main display, so we recommended to set this LCD as the main display.
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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]]
  
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==='''Adjust the backlight on the Windows'''===
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1. Download the [https://www.waveshare.com/w/upload/e/e9/7C_brightness_Windows.zip 7C_Rev4.1_Windows backlight adjustment file] and unzip it to any directory on the computer.
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2. Enter the corresponding directory, double-click to open the 7C_brightness_Windows.exe software, and drag the slider to adjust the backlight.
 +
:[[File:7C_Brightness-1.png|600px]]
 +
 +
=='''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)
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 +
[[File:win10_touch011.png|700px]]
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*2. Click "Setup" in the pop-up "Tablet PC Settings" interface:
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[[File:win10_touch02.png|400px]]
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 +
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*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.
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<font color=red>【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!) </font>
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[[File:win10_touch03.png|800px]]
 
==='''Working with Raspberry Pi'''===
 
==='''Working with Raspberry Pi'''===
  
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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.
 
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.
  
=='''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)
 
 
[[File:win10_touch011.png|700px]]
 
 
*2. Click "Setup" in the pop-up "Tablet PC Settings" interface:
 
 
[[File:win10_touch02.png|400px]]
 
 
 
*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.
 
 
<font color=red>【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!) </font>
 
 
[[File:win10_touch03.png|800px]]
 
 
<!--
 
<!--
 
== '''Rotation'''(Working with Raspberry Pi) ==
 
== '''Rotation'''(Working with Raspberry Pi) ==
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270 degree rotation: Option "CalibrationMatrix" "0 -1 1 1 0 0 0 0 1"
 
270 degree rotation: Option "CalibrationMatrix" "0 -1 1 1 0 0 0 0 1"
 
-->
 
-->
 +
 
== '''About the version'''==
 
== '''About the version'''==
 
Rev4.1 version
 
Rev4.1 version

Revision as of 06:14, 27 November 2021

7inch HDMI LCD (C)
7inch HDMI LCD (C)
7inch HDMI LCD (C) (bicolor version

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Primary Attribute
Category: OLEDs / LCDs, LCD, Raspberry Pi LCD
{{{userDefinedInfo}}}: 7inch HDMI LCD (C)
Brand: Waveshare
Website
International: 7inch HDMI LCD (C)
Chinese: 7inch HDMI LCD (C)
Onboard Interfaces
USB HDMI
Related Products

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.

7C Brightness-1.png

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)

Win10 touch011.png

  • 2. Click "Setup" in the pop-up "Tablet PC Settings" interface:

Win10 touch02.png


  • 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!)

Win10 touch03.png

Working with Raspberry Pi

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.


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

Question:
What should I do if I connect to the PC with LCD and it cannot display normally?
Answer:
  • 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.


Question:
What can I do if the thin red lines appear on the edge of the screen?
Answer:
  • Edit the config.txt and add this line at the end of the config.txt file:
hdmi_drive=1


Question:
What should I do if the screen has the ghosting problem?
Answer:
Adjust the adjustable potentiometer on the back. After the desktop is displayed, adjust the potentiometer to the best display effect, and then leave the screen for a while and wait for the ghost to disappear (it may take several hours).

Potentiometer of 7C.jpg


Question:
How to use the touch function when connected to a Linux PC which is non-designated?
Answer:
You can try to compile the universal touch driver "hid-multitouch" into the kernel, which generally can make the touch function work.


Question:
Can the brightness of the 7inch HDMI LCD (C) be adjusted by modifying the resistance?
Answer:
The default brightness has been adjusted to the highest, you can reduce the screen brightness by increasing the resistance of these two resistors in the picture below.

The picture below shows the Rev3.1 version, which is similar to other versions.

7inch HDMI LCD FAQ02.jpg


Question:
What is the working current for the 7inch HDMI LCD (C) when it works normally?
Answer:
Using 5V power supply, the working current of turning on the backlight is about 490mA, and the working current of turning off the backlight is about 90mA.



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.