7inch HDMI LCD (B) (Firmware Rev 2.1) User Manual

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7inch HDMI LCD (B) User Manual - Based on Firmware Rev 2.1.

Working with PC

This product supports Windows 10/8.1/8/7 operation systems. For the Windows 10/8.1/8 OS, the touch screen supports multi-touch up to 10 points. For some Window 7 OS, the touch screen supports single touch only.

Turn on the "backlight" switch then connect the LCD to your PC (USB Port of LCD -> USB Port of PC; HDMI Port of LCD -> HDMI Port of PC. Please first connect the USB Ports then connect the HDMI Port). A new touch drive will be recognized by Windows and you can use the LCD as a human interface device. When multiple displays are detected by your PC, the LCD can only be used to control the cursor on main display. So it is proposed to set the LCD as the main display.

Working with Raspberry Pi

For the Windows OS on PC, the resolution of the LCD is automatically identified. Hence, you do not need to make the relative settings. When working with Raspberry Pi, you should set the resolution of the LCD by yourself, or else the LCD screen will not work. For more detail information, please read the following section.

Turn on the "backlight" switch then connect the LCD to your Pi (HDMI Port of LCD -> HDMI Port of Pi; USB Port of LCD -> USB Port of Pi; 5V~2A power supply). Download the Raspbian image from Raspberry Pi web site. Write the image to a TF card and append the following lines to the config.txt file which is located in the root of your TF card: 

max_usb_current=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt 800 480 60 6 0 0 0
hdmi_drive=1

You must make sure that there are no spaces on either side of the equal sign.

Save and connect the TF card to your Pi then power up.

(Touch input working well means that the LED firmware is Rev2.1. If the LCD firmware is 1.1, see #About LCD revision)

Note: Resolution of Ubuntu Mate OS or Windows 10 IoT Core OS can also be set properly by editing config.txt.

Working with BeagleBone

How to program Angstrom image file

If this LCD module is used for display only, you can program the latest Angstrom image file to the board directly without any change. The BeagleBone will read the display parameters of the 7 inch HDMI displayer and set the resolution to 800*480 automatically. When using this LCD module as a touch screen, you should program the image file 7inch HDMI LCD (B) Angstrom Image. Please follow the steps below to program the image file.

  1. Download the zip file to your PC, unzip it and get an .img file.
  2. Connect a TF card to your PC, and format your TF card with the SDFormatter.exe
    Notices: The capability of TF card in used here should be more than 4GB. In this operation, a TF card reader is also required, which has to be purchased separately.
  3. Start the Win32DiskImager.exe, and select the system image file copied into your PC, then, click the button Write to program the system image file.
  4. After programming the image file, please insert the TF card to your board, press the key uBOOT and hold it till power up. Then, you will enter the system located at the TF card. Wait a moment and you will enter the graphical desktop directly.

Hardware connection

  1. Connect the LCD to the HDMI on the BeagleBone board with a HDMI to micro HDMI cable (sold separately);
  2. Connect the USB Touch interface on the LCD to the USB interface on the BeagleBone board with a type-A-to-micro USB cable. (BeagleBone has two USB interfaces, one for host and the other for client. In here, you should connect the LCD module to the USB host interface).

Working with Banana Pi

Before powering up the Banana Pi, you should connect it to a LCD displayer properly, since the Banana Pi may read the resolution parameters of the LCD displayer on startup. And the connection should be remained till the Banana Pi enters the desktop. In this case, even if you disconnect the LCD displayer and reconnect it again to the Banana Pi, the LCD can still work properly.

How to program Raspbian_For_BananaPi image file

Program the image file 7inch HDMI LCD (B) Raspbian Image to the board. This image file supports the modules BananaPi Pro and BananaPi.

  1. Download the zip file to your PC, unzip it and get an .img file.
  2. Connect a TF card to your PC, and format your TF card with the SDFormatter.exe
    Notices: The capability of TF card in used here should be more than 4GB. In this operation, a TF card reader is also required, which has to be purchased separately.
  3. Start the Win32DiskImager.exe, and select the system image file copied into your PC, then, click the button Write to program the system image file.

Hardware connection

  1. Connect the LCD to the HDMI on the Banana Pi board with a HDMI cable;
  2. Connect the USB Touch interface on the LCD to the USB interface on the Banana Pi board with a type-A-to-micro USB cable.

How to load WiFi driver of BananaPi Pro

Comparing with the Banana Pi, the BananaPi Pro has added an on-board WiFi module. When using the BananaPi Pro, you can use SSH to connect to the Pi and execute the following command to load the WiFi driver: 

sudo modprobe ap6210

How to use with the Lubuntu system

Program the image file 7inch HDMI LCD (B) Lubuntu Image to the board. This image file supports the modules BananaPi Pro and BananaPi. User name: bananapi Password: bananapi

FAQ

{{FAQ|There is a red line

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