Right-side analog "Razor Nub" from Acid Mods
There have been several instances of PSP owners adding an analog stick mounted to the exterior of the rideside of the unit, providing analog controls on both sides. Well now Acid Mods is getting closer and closer to offering a right-side analog stick that can be installed inside the PSP unit. They've dubbed this latest project the "Razor Nub." cyberpryot on the Acid Mod forums was the one to offer this news:
This new nub design will be balanced and fit perfectly on the right side to match it's counterpart on the left side.. For all of you who waited for us to get it under the face plate your wait is now over. I designed the new board to fit cleanly. My good man Neubit manufactured the first batch of prototype boards this morning Chinese time zone. This weekend F00 F00 will produce the first PSP to sport the new design.
As you can see in the pictures below, this
is pretty then (as indicated by the penny comparison). It'll be interesting to see what F00 f00 can do with this and maybe it'll even see mass production in the near future. More information is available on the Acid Mods forums via the link below.
Acid Mods' Razor Nub right-side analog stick

Source:
Acid Mods