i got the link for this particular model from the E-Unicycle, but i am prototyping the 6DOF board, and you can make any other one with it (for 4DOF, don't use the z-Axis board, for 2DOF just use the z-Axiz board as a *-Axis). they posted a .pdf of the board right on the page, so i guess it's ok with them if you make one for yourself, and since the 4DOF (the one i need) board is $320 i wouldn't buy one anyway. i emailed them asking if it was ok if i did this, and they didn't say no (it really was just a formality, i would've built one anyway
)i don't want you to tell me your interested if you would've bought one from them, because i'm selling their product for less than they are selling it. but i don't think it's wrong to do this if you wouldn't've bought from them anyway, it's not like they are losing money or anything. they also published a .pdf and publicly posted it on their page using a program i use (expressPCB, screw eagle and it's complicated design), really a "left the front door open and the TV was missing when i came home" situation, even though it would really be a "i left the front door open and i came home and all my books were read" situation (i'm just using their information).
it looks like there is one E-8 surface mount accererometer for each axis, but everything else is through hole mount (1/4W resistors, radial leaded capacitors, and DIP IC's). looks easy once you get the parts and get those damn SMD parts on.
right now the price stands at about $100 USD for two boards, but i'm probably going to want some extra boards for myself, so i will be fair and credit myself with a few more "shares" of the price (if i get five boards and five others buy a single board, i'll pay half the total cost). the boards are 2.5" X 3.8" (6.35 X 9.65 cm) so i can probably just mail it in a standard envelope, so add 50 cents if you want for postage (in the US, deffo add for shipping to the UK).
i have gotten two of the three sections done, if anyone is interested in a 6DOF or 2DOF let me know so i'll hurry-the-hell-up getting the last part done.
if you want me to email you the file as an attachment email me and i will, it'll make me feel secure knowing there is two people trouble shooting the board for mistakes (haven't found any yet, but i don't want to screw everything up for everyone) instead of just me.
i also posted this on bit-tech.net's forums, so more people will (hopefully) do this, thus lowering the individual cost