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HomepcDuinoUSB Development7″ HDMI LCD with USB touch for pcDuino
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7″ HDMI LCD with USB touch for pcDuino

Posted by: admin , January 6, 2014

[vc_row][vc_column][vc_column_text]It is a LCD screen with USB touch driver just for pcDuino.

Specification:

  • Voltage: 12V DC rated at 2A.
  • Power: 6-7W.
  • Format: PAL/NTSC
  • Video Input: 2 channels, AV/VGA/HDMI
  • HDMI Input: HDMI V1.2
  • VGA Input: Physical resolution: 800X480, it can support 620×480 to 1600×1200
  • USB touch screen
  • Display Size: 7″
  • Size: 165.0 (W) x 100.0 (H) x 5 (D) mm
  • Active Size: 154.08 (H) x 85.92 (V) mm
  • Resolution: 800 x 3 (RGB) x 480
  • Pitch: 0.05 (W) x 0.15 (H) mm
  • View Angle: L70°R70°U50°D60
  • Material: TFT
  • Number of Colors: 262K
  • Contrast: 500:1
  • Response Time: 20 ms
  • Brightness: 220 cd/m2

touch_screen[/vc_column_text][vc_tour][vc_tab title=”Picure of pcDuino output” tab_id=”1389030103-1-33″][vc_column_text]pcduino_lcd[/vc_column_text][/vc_tab][vc_tab title=”Install USB Touch Driver” tab_id=”1389030103-2-71″][vc_column_text]1. Add USB touch Driver

Obtain USB touch driver:

$wget https://s3.amazonaws.com/pcduino/drivers/usbtouchscreen.ko

$ sudo cp ./usbtouchscreen.ko /lib/modules/3.4.29+

Add “usbtouchscreen” to /etc/modules:

$sudo nano /etc/modules

usbtouchscreen_modules

2. Install required package and calibrate the touch

Note: You need to connect the touch USB of the touch LCD screen to the USB host of pcDuino.
$ sudo apt-get install utouch xinput-calibrator
$ sudo insmod /lib/modules/3.4.29+/usbtouchscreen.ko
$ xinput_calibrator

calibration

Follow the instructions on the screen and after it is done, you will see:

calibration2

3. Add calibration data to /usr/share/X11/xorg.conf.d/99-calibration.conf

$ sudo cat > /usr/share/X11/xorg.conf.d/99-calibration.conf << EOF

The following should be your real data:
Section “InputClass”
Identifier    “calibration”
MatchProduct    “eGalax Inc. USB TouchController”
Option    “Calibration”    “56 2012 1935 125”
EndSection

EOF

4. Restart system

$sudo reboot

5. Install software keyboard

$sudo apt-get install matchbox[/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]

Tags: USB Development

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One Response to “7″ HDMI LCD with USB touch for pcDuino”

  1. Log in to Reply
    renaud
    September 3, 2014 at 10:33 am

    Hello,
    Any idea where I can purchase this touch screen for pcduino?
    Thx,
    Renaud

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