7inch HDMI LCD (B)
7 inch Capacitive Touch Screen LCD, HDMI interface, with a resolution of 800 × 480and a capacitive touch panel, which supports Raspberry Pi and can also be used as a computer monitor.
- 800 × 480 hardware resolution.
- 5-points capacitive touch control.
- When used with Raspberry Pi, supports Raspberry Pi OS / Ubuntu / Kali and Retropie.
- When used as a computer monitor, supports Windows 11/10/8.1/8/7.
- Support backlight control, saving more power.
Working with PC
This LCD can support Windows 7/8/8.1/10/11 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.
1) 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.
2) Some PCs do not support plug-and-play with HDMI devices. Generally, they can be used normally after restarting the system.
3) Some PCs may cause LCD flickering due to insufficient power supply through the USB interface. Generally, they can be used normally after connecting to an external 5V/2A power supply through the DC interface.
Working with Raspberry Pi
This LCD can support Raspberry Pi OS / Ubuntu / Kali and Retropie systems. When the LCD works on systems such as Raspberry Pi OS, the resolution must be set manually, otherwise, it will cause an abnormal display.
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 software to format the TF card.
3) Open the Win32DiskImager 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.
hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 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.
EDID Sequence Parameters
If the system of the main control board can automatically recognize the EDID for display, there is no need to additionally set related timing parameters.
Otherwise, you can refer to the following EDID settings:
|Pixel Clock||H Addressable||H Blanking||V Addressable||V Blanking||H Front Porch||H Sync Width||V Front Porch||V Sync Width||H Image Size||V Image Size||H Border||V Border|
Note: We don't recommend you do any hardware modification, which may damage LCD if you are not good at it. So be careful when you following this manual
LCD Panel Dimension
- 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 7inch HDMI LCD display normally.
- Edit the config.txt and add this line at the end of the config.txt file:
As shown in the figure below, change serial number 2 to 68K resistor, serial number 3 to 5.1K resistor, and remove serial number 1 resistor.
Then connect the PWM pad to the P1 pin of the Raspberry Pi.
Execute the following command on the Raspberry Pi terminal:
gpio -g pwm 18 0 gpio -g mode 18 pwm (occupied pins are PWM pins) gpio pwmc 1000 gpio -g pwm 18 X (X ranges from 0 to 1024), 0 is the brightest, 1024 is the darkest
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.
If you require technical support, please go to the Support page and open a ticket.