Summary

12x 9G micro servos used. The idea is to use all digital pins on Arduino from 2~13 and keep pin 0 and 1 for communication.

The leg is designed with replaceable plate so I can design the different look of the leg without replace servos all over again.

Video 1:
http://youtu.be/lNeNtL1E-SI

Video 2:
http://youtu.be/SCRc4YMtu8c

Video 3(Complete):
http://youtu.be/3NyIRfgOr8s

Instructions

For those parts you need to print put:
bodyPlate_top x 1
bodyPlate_bottom x 1
legShield x 6
arm x 6
link x 6
connx x 6
bracket_L x 3
bracket_R x 3

You want to buy M2 or M3 bolts and nylon nuts for joints connections(i.e. connx.stl and link.stl). Also get those hobby aluminum tubes and cut them into proper length. Check the image I have also upload at gallery for better understanding. There are 3 places need to use this combination.

connx.stl and link.stl
connx.stl and arm.stl
bracket_L(R).stl and link.stl
You might want to check the image for reference.

in addition:
For head and the pack parts are not nesseary but I still add it for someone who might interested. They are actuallyvery rough designed because they just add up for fun personally. So you might need some crazy glue or 3M double sided type to support some joints. Those parts are:
head.stl
neck.stl
*topSideCover.stl

For battery I have used 7.4v 500mah Lipo. You may search ebay by keywords:"dlg 500mah 50c 7.4v" to find the exact battery that I used.

For LED holder you may search ebay by:"5mm LED mount holder". The size should be pretty much the same on "head.stl".

Hexapod 2DOF