RPi LCD User Manual
Contents
1. RPi LCD User Manual Waveshare RPi LCD User Manual Features Designed for Raspberry Pi Model B B an ideal alternative solution for HDMI monitor Convenient Men Machine interface for Raspberry Pi combined with the portable power DIY anywhere anytime Supports Raspbian system enables your system to mM Play videos supports multi formats MP4 and so on M Take photos by touching up to 17 camera modes M Support software keyboard system interaction without keyboard mouse Contents REE LEDS SF Manualer o E E T cuaseneneausinu Gah oabaawuaao ENNEA 1 FE AUUINCS sncctcarccsisainns tun noie teas aatenacuatae taniacctoanmacane sau ta Gaan sraae aus E E A 1 Ts Progrimminethe IIa Ge TNS cranenanii anadsccseeraataudoauatbnent T 2 2 LCD display switch to HDMI display cc ccccccccccceeeeeseesesseeassesesseseeeeeeeeeeeees 3 3 HDMI display switch to LCD display ccccccccccceceeceeeeeeeeseeaesesesseeeeseeeeeeeeees 3 A TOUCH Screen CAD FALON enaa oer ha nee ae eacemhad a 3 5 Howto WOK with a camela cis oics ceadi Aesaceaiarsed neita OEA A uous aadwaes 4 6 APPENA ack Se ese d arian Gh aha sh at vlerhetc er A N 5 6 1 Default entering the console after power up csesesseseeeeeeeeeeeeeeeeees 5 6 2 Modifying the LCD screen reSOlUtiOn ceeeeeeeeeeeeeeeeeeeeeseseeeeeeseeeeeens 5 RPi LCD User Manual Waveshare 1 Programming the image file 1 2 RPi LCD needs to use a SPI interface but in the orig2. e external HDMI displayer if you apply one under this mode In case that you want to use HDMI display please execute the following commands pi raspberrypi S sudo su root raspberrypi HDMI SYS SHOW The system will load the driver wait several minutes And the Raspberry Pi will reboot automatically when the driver loaded After the module rebooted waiting more than 30 seconds there will be information display on the HDMI screen And then you will enter into Startx interface 3 HDMI display switch to LCD display If you need to use LCD display again please operate the following commands to switch to this mode pi raspberrypi Ssudo su When using 3 2inch RPi LCD please input root raspberrypi LCD32 SYS SHOW V3 When using 3 5inch RPi LCD please input root raspberrypi LCD35 SYS SHOW When using 4nch RPi LCD please input root raspberrypi LCD4 SYS SHOW When finished the commands above the system will load the driver wait several minutes And the Raspberry Pi will reboot automatically when the driver download finished After the module rebooted waiting more than 30 seconds there will be information display on the HDMI screen And then you will enter into system interface Descriptions Under the HDMI display mode you should use an external keyboard or SSH method for command inputting since the virtual keyboard is not available Or you can set a serial port as a debugging interface for command inputt
3. fication will be valid after the system rebooted
4. inal image file of Raspberry Pi the displayer is driven via a HDMI port So the original image is not applicable for RPi LCD and you should use the system image file provided by Waveshare The image file provided by Waveshare is located at the directory of IMAGE in the CD provided with the product for more information about how to programming the image file please refer to the document Writing IMG files to SD Card When finished the programming please power on the module and wait more than 30 secs Then you will see the boot screen of Raspbian shown in the LCD and enter the desktop of the system Descriptions Under LCD display mode the screen touch function is available For data inputting you can click the start menu in the bottom left of the screen and select Accessories gt Keyboard to enable the Virtual Keyboard for command inputting as Figure 1 shows za Education gt File Manager gh Graphics gt imi Galculator Q Internet b Image View er Dow gt EE D Programming gt 4 Leatpad H Sound amp Video b E XTerminal System Tools gt ie Root Terminal Toggle Matchbox Keyboard Preterences gt ec Xarchiv er Run XStroke Logout 3 XStroke Kill a pi raspberrypi Figure 1 Enabling the virtual keyboard RPi LCD User Manual Waveshare 2 LCD display switch to HDMI display 1 2 The default boot mode of the system image in CD selects LCD display And there will be no output to th
5. ing 4 Touch screen calibration 1 2 Enter the following commands for touch screen calibration pi raspberrypi S su pi pi raspberrypi S DISPLAY 0 0 xinput_calibrator After running these commands there will be a prompt for four point calibration shown in the LCD screen Click the points one by one to finish the touch calibration Then the new calibration data will be displayed in the terminal as 3 RPi LCD User Manual Waveshare Figure 2 shows Please get these data for future use Figure 2 The calibration data displayed in the terminal 3 Enter the following command to edit 99 calibration conf pi raspberrypi S sudo nano etc X11 xorg conf d 99 calibration conf P le A a a a a i i Figure 3 Editing 99 calibration conf 4 Modify the data marked with red box in the Figure 3 to the new calibration data displayed in the step 2 as Figure 4 shows Figure 4 Modifying the data of Option Calibration 5 Press the keys Ctrl X and select the option Y to save the modification 6 The modification will be valid after rebooting the system Enter the following command for system rebooting pi raspberrypi sudo reboot Notices In case of inaccurate touch please perform screen calibration again and reboot the system 5 How to work with a camera RPi LCD can also work with an external camera to take photos In this operation a Raspberry Pi camera is required which should be purchased separate
6. ly To work with a camera you should enter the terminal and input cd home pi camera Camera RPi LCD User Manual Waveshare Then waiting several seconds the camera application will be started automatically Now you can capture pictures by double clicking the screen 6 Appendix 6 1 Default entering the console after power up 1 2 3 4 You can perform more operations to Raspberry Pi module by entering the console of the Raspbain Edit the file rc local you should enter the terminal and input sudo nano etc rc local Eidt the file rc local Find out the following line Su lpi e Add the symbol before this line as follows Press the keys and select the option Y to save the modification Reboot the system sudo reboot After the system rebooted you will enter the console automatically 6 2 Modifying the LCD screen resolution 1 3 4 Following the steps listed below you can modify the LCD screen resolution Edit the file rc local You should enter the terminal and input sudo nano etc rc local Edit the file rc local Find out the following line s l pi c Modify the figure following the dpi It is suggested to modify to 60 Although the smaller font size allows more information shown in a screen the content displayed is less clear as well Press the keys Ctrl X and select the option Y to save the modification Reboot the system sudo reboot The modi
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