The file '2020 Mountable Keyboard Tray For Rii Ultra Slim Wireless Keyboard (or Similar). Long And Short Versions 3D Printer Model' is (stl) file type, size is 17.7KB.
This is a simple keyboard tray that mounts to a 2020 extrusion. It was designed specifically to hold this Rii K12 Ultra Slim Wireless Keyboard/touchpad: https://www.amazon.com/gp/product/B00ESUXXZM/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=joemike-20&linkId=35d6ee68efd617e5f3fe008b928513f5
It can of course hold other keyboards or items.
I use this in conjunction with my 7 inch Raspberry Pi Touch screen and Pi 2 to run Octoprint. It provides a nice little kiosk on the printer itself.
The 7 in LCD mount can be found here: http://www.thingiverse.com/thing:1670214
The 7 in Touchscreen can be purchased here: https://www.amazon.com/gp/product/B00ESUXXZM/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=joemike-20&linkId=35d6ee68efd617e5f3fe008b928513f5
UPDATED: Added a shorter version for those with a print surface of 200mm.
RiiKeyboardholder2020v3.stl | 109.4KB | |
RiiKeyboardholder2020v3_SHORT.stl | 108.1KB |