How to build a simple robotic arm from Lego Mindstorms NXT?

Step 2 Building the "rotation module"

This is one of my rare robots that are built from modules. My robotic arm has three modules; one of them is the "rotation module".

It's very simple. It rotates the arm left and right and supports the other two modules. It's based on Matthias Paul Scholz's 90 degree join at:
http://mynxt.matthiaspaulscholz.eu/robots/motor90/index.html

Comments

[the_artificer]

how can you make this thing, theres no instructions on the mods

[roksraka]

it's exactly the same, just flipped around, and I added the support for those large gears (which I think you can figure out how it's done)... but again, i built this two and a half years ago, so I don't know the details... :/

[deniz9636]

 plzz   give instruction for this part email me at      [e-mail]

[glar glar]

no one will know every single step seriously

[elec3647]

Sorry to say this, but this setup should come with a warning: You need more than one Mindstorms kit. The standard kit doesn't come with two large gray wheels. Also, step 2 need A LOT more instructions. Thanks.