nice instruction on networking
http://www.su4me.de/lin_network.html#network-resolv


on the original SD card dmesg shows found when insert 8187 adapter
Power consumption +1W
 
Edimax and Logilink not found on the factory SD.



apt-get install wireless-tools


/etc/init.d/networking restart


ifconfig wlan0 up

iwlist scanning 2>/dev/null | grep ESSID


iwconfig wlan1 essid "WLAN"

dhclient wlan1

if does not work then need to disable this.  That was installed for GSM modem:
/etc/init.d/network-manager restart
/etc/init.d/network-manager stop


#################################
#nano /etc/network/interfaces

auto wlan0
iface wlan0 inet dhcp
#################################




http://dylan.doxey.org/article/20/automatic-network-setup


iface eth0 inet static
        address 192.168.0.3
        netmask 255.255.255.0
        gateway 192.168.0.1




-----------------------------------------------------------------
This works to connect to a free network ssid!

auto wlan0
iface wlan0 inet dhcp
essid "WLAN"




Not checked


pre-up ifconfig wlan0 up 
pre-up iwconfig wlan0 essid internet



iface wlan0 inet dhcp
wireless-essid   MYNETWOTK


 This is a fallback, selected for all unencrypted WLANs
iface wlan0-open inet dhcp
        wireless-essid ANY
        wireless-mode managed