i built this after the vehicle. it has a main turntable a big joint an elbow wrist rotation wrist joint and a claw
How’d you manage the motors with only 3 outputs? I did an arm like that and ended up using a differential and a ratchet system to give me more axes
Is there second RCX slaved to the first over infrared? I’m confused how you got six axes too if that isnt what you did… 
-q
There is a second Rcx that you cannot see in the picture.
the arm is programmed in NQC(not quite c) which was designed for legos.
the two rcxs are programmed to respond to certain messages. i then used battlebricks rc program to map keys on a keyboard to send messages