a hobby servo is ok na ok na for this application. mas maganda kung programmable via mcu then interfaced sa pc for the command codes... much like a cnc...
[set arm command: Command NO, Articulation, Angle]
Pause time: 2 seconds
1, arm, 30
2, wrist, 90
3, grabber, open
4, wrist, 10
5, arm, 10
6 grabber, close
6, none, none back to 1.
something like this one.