i complied them and made my own robo hand/ that was just like a puppet.
Step 4: Problems
i faces many problems firstly it was made but didnt work. then i desmantle it and constructed it again. next it was working but when i dismantel it, it had cracks on it. i fixed them and the final thing that i wanted was made.
Step 5: Uses
it can be used to pick things that are little bit far. it can be used to switch of switches.