depending on if u want wireless or usb cabled type the same concept of hacking it up applies besides the power/connection type
ive numbered the pics in the OP
first u want to buy all the parts which is listed in the first post for the wireless version
the first 7 pics are a nobrainer as u will want to drill fitting holes for the momentary and spst switches
8-13 are just the logitech kboard i used for this project
14 is just the usb wireless dongle in the USB CCK
15-17 is the wireless kboard encoder pcb
18-20 is fully installed
heres the first thing tho
when u disassemble the kboard that will be 2 types of films
example of what it may look like
http://x-b-r.com/images/keyboard.jpghow a keypress works is when the 1st film contact point touches 2nd film contact point that is registered as a keypress
the 1st film contact point traces back to a pin on the encoder and same goes for the 2nd film contact point
easiest way to find which pin on the encoder corresponds to the key needed is to use a multimeter in continuity than to visually do a trace back
its pretty simple really
first up is desoldering that battery spring clip on the encoder pcb which is useless now as ull use a battery holder instead
once uve figured out the pins for the key its a matter of just soldering wires to the pins but make sure to carefully use a razor to scrape back the protective material on the pins ure gonna solder to
next ull need to solder wires for the power which is the solder points u used to desolder the prev spring clip to the battery holder which should usually have a black and red wire
next ull need to solder wires to the power switch as its a simple spst surface mount switch so just do a bit of multimeter continuity testing and u should figure it out in a min or so
make sure the surface mount switch is set to off as ull be using your own spst switch to be the controlling switch
mount the encoder pcb and battery holder inside the enclosure with like doublesided tape
with the wires from the pins just wrap thru the momentary switches leg holes then test it with ipad for the keypresses
when ure happy with it just solder the the wires and ure good to go
if ure handy with simple electronics it should work first go
not all too complicated
its pretty trivial really
same type of idea can be done with a bluetooth enabled kboard to remove the need for a wireless dongle but with like a button for syncing etc... if the kboard uses one
also same idea if u wanna make a bluetooth arcade stick just like the icade but use the bluetooth kboard to actually find out what keys corresponds to what in games etc... unless someone has already done the hard work finding out what key does what
