Wifi and networking

Finding IP addresses remotely on network, try and app called ‘fling’ there are versions for Android and an iPad.

[thanks to Trevor Appleton for finding this]


Problems with Wifi dropping out  [ this is quite old seems not to be so much of a problem now [4/2015]

having struggled for a long time with wifi links to my Rpi’s I decided there must be a solution as clearly other people were not suffering the same aggravation. Searching on the Internet, I found a solution to a similar problem, where the WiFi adapter chip (Realtek in my case) was having some power saving feature enabled by default.  I verified, if that was the case the with me and turned out (fortunately) yes!

So here is what I have done 


cat /sys/module/8192cu/parameters/rtw_power_mgn

Here, the power-saving status is
0 = Disbabled
1 = Min
2 = Max

To force this to disabled you to create a file:
sudo nano /etc/modprobe.d/8192cu.conf
and add this line:
# Disable power saving
options 8192cu rtw_power_mgnt=0

save and reboot.
You can then check the status to confirm it is off with:

 cat /sys/module/8192cu/parameters/rtw_power_mgnt

It should be 0 now.
I am not able to provide the original source as blog seems to have been deleted