huafu/gist:b34ad7062dc7f09cd80b

## gistfile1.md

      
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              gistfile1.md
            
          
    I have a fresh install of OpenWrt 15.05-rc2 on a RaspBerry B+
root@bnh-traveller:~# uname -a
Linux bnh-traveller 3.18.11 #1 Mon May 18 21:56:20 CEST 2015 armv6l GNU/Linux

I have already installed required packages with success
root@bnh-traveller:~# opkg install kmod-rt2800-lib kmod-rt2800-usb kmod-rt2x00-lib kmod-rt2x00-usb  
Package kmod-rt2800-lib (3.18.14+2015-03-09-3) installed in root is up to date.
Package kmod-rt2800-usb (3.18.14+2015-03-09-3) installed in root is up to date.
Package kmod-rt2x00-lib (3.18.14+2015-03-09-3) installed in root is up to date.
Package kmod-rt2x00-usb (3.18.14+2015-03-09-3) installed in root is up to date.

Here is my USB wifi device:
root@bnh-traveller:~# lsusb 
Bus 001 Device 005: ID 148f:3070 Ralink Technology, Corp. RT2870/RT3070 Wireless Adapter

But no wireless extension recognize after a reboot
root@bnh-traveller:~# iwconfig 
lo        no wireless extensions.

eth0      no wireless extensions.

br-lan    no wireless extensions.

Tho the kernel recognize my USB wifi card...
[  500.821888] usb 1-1.3: USB disconnect, device number 5
[  506.176242] usb 1-1.3: new high-speed USB device number 6 using dwc_otg
[  506.303676] usb 1-1.3: New USB device found, idVendor=148f, idProduct=3070
[  506.312046] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  506.320858] usb 1-1.3: Product: 802.11 n WLAN
[  506.326715] usb 1-1.3: Manufacturer: Ralink
[  506.332343] usb 1-1.3: SerialNumber: 1.0

I have done the extact same setup on a TL-WR842ND with same OpenWrt version and same packages, and it is recognized correctly and I could use it as a wifi usb dongle.