These are all the robot building instructions. By visiting each building instruction you could see the Tutorials and Courses in which it is used. We have a new vesion of the Materials page click hereand see it.
- download building instructions for the gear attachment. Note that you will need both LEGO Digital Designer and LDView to open the instructions. There are limitations in the LDD software and for the .ldr file in the archive you should use LDView installed along with LDraw