Buffalo WHR-G300N-V1 (OpenWRT - Ralink RT305x)

I have couple of these beautiful routers, most of them have been flashed with DD-WRT previously, can only create 1 vlan.500 under dd-wrt ......
It really took me a while to flash to OpenWRT and now able to create both vlan.500 & 600 for UniFi

I use the following custom build for this device, thanks & credit go to the creator 
Source : http://royalwin.blog.so-net.ne.jp/2012-06-30-1

Later I re-flash it with OpenWRT DIR-615-D package, seem to be working well on UniFi

Switch layout and vlans setup for UniFi

Refer HERE for flashing process

Refer HERE for UniFi setup reference (Use the above Switch setup)