Waveshare 7inch HDMI LCD (B) - Hardware Connection; Virtual Keyboard of Raspberry Pi; How to Configure Original Raspbian Image File; How to Install Driver Script

7inch HDMI LCD (B) User Manual
4
Rev 1.1, Date: May 20
th
2015
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2.2. Hardwar e connection
1) Connect the LCD to the HDMI on the Raspberry Pi board with a HDMI cable;
2) Connect the USB Touch interface on the LCD to the USB interface on the Raspberry Pi board with
a USB type-A male to micro-B cable.
2.3. Virtual k eyboard of Raspberry Pi
The Virtual keyboard of Raspbian system enables you to save the USB resource, providing easy system
operations. After the LCD is working properly, this function can be invoked by the following command:
DISPLAY=:0.0 matchbox-keyboard -s 100 extended
Now, the virtual keyboard is ready to use, as Figure 2 shows.
Figure 2: Virtual keyboard of Raspberry Pi
2.4. How to config ure original Ra spbian imag e file
In the section above, we presented the steps of image programming by taking the ready-to-use
system image file programming as an example (see Section 2.1), since the ready-to-use image is easier
to use and understand. However, you can freely customize your system by configuring the original
Raspbian image file to support this LCD module.
2.4.1. How to install driv er script
1) Copy the file RPI2B_B_B+_USB_TOUCH_CAP_7.0_RASPBIAN.tar.gz into the Raspbian system, and
unzip it. That is, enter the terminal and input the following command:
sudo tar zxvf RPI2B_B_B+_USB_TOUCH_CAP_7.0_RASPBIAN.tar.gz