Day: December 24, 2014

10.1″LCD Display 1366×768 for my Raspberry Pi

sunny

IMG_5329

I bought a 10.1″LCD Display for my Raspberry Pi from SeeedStudio last month(a item got messed up so delayed for like 3 weeks), and finally arrived today.

http://www.seeedstudio.com/depot/101LCD-Display-1366×768-HDMIVGANTSCPAL-p-1586.html

There are not much on instruction how to set it up, so I am taking pictures down as the instruction for references how to connect the display:

IMG_5330 IMG_5331

The control keyboard has 5 five buttons, they are Power, Down, Up, Select, and Back.  There is only one connector you can connect it, so there should be no mistake on connection the keyboard.

Also, change the config.txt file in the Raspberry Pi.

sudo nano /boot/config.txt

In editor, uncomment and change the following lines:

hdmi_force_hotplug=1

hdmi_drive=2

hdmi_group=2

hdmi_mode=81

config_hdmi_boost=4

This is a setting for 1366×768 resolution.  For more information the meaning for each setting, can find it at

http://elinux.org/RPiconfig

References:

1. http://www.seeedstudio.com/depot/101LCD-Display-1366×768-HDMIVGANTSCPAL-p-1586.html

2. https://learn.adafruit.com/hdmi-uberguide/2261-10-dot-1-1366×768-display-ips-plus-speakers

3. http://elinux.org/RPiconfig

 

 

 

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WiFI adapter on Raspberry Pi

sunny

Recently I found that my raspberry Pi WiFi adapter with Realtek 8192cu chip will be turned into a suspend or sleep mode after awhile with no connectivity. That is very inconvenience because I have to restart or wire it with ethernet cable if the connection is dropped. After doing some research, I found a solution on Stackoverflow.

http://raspberrypi.stackexchange.com/questions/1384/how-do-i-disable-suspend-mode/4518#4518

 

It is because the adapter has power management features enabled by default.  To disable it so that the Wifi connection can keep alive, just add a configuration file for the adapter.

sudo nano /etc/modprobe.d/8192cu.conf

Add this line in the file:

options 8192cu rtw_power_mgnt=0 rtw_enusbss=0

Reboot the Raspberry Pi, and the WiFI connection will be stay alive!

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