Reflash, remove telescope, it's meant for a touchscreen and in fact in the build I tried (which was admittingly quite a few revisions back, I could highlight-select a window but not actually switch to it with the keyboard).

This is the OTG adapter.
here &
here

You can make one but at $8 $5 on ebay and good construction it's not the worth the time. I use it with my usb keyboard, with my usb=>ethernet adapter, wifi adapter (monitor mode; requires separate power source), and usb flash drives. Host mode is what we get to throw in the faces of N900 owners (;