I don't get how he added the last 4(?) servos
Well you only need one pin per servo for control remember, the power being taken care of off the Arduino. Let's say you have the following lines in your code (extract from sweep):
Servo myservo;
myservo.attach(9);
myservo.write(pos);
You could have this (incomplete code!) for three servos:
Servo myservo;
Servo myotherservo; // <<<< note new names; you would call these "thumb", "middlefinger" maybe
Servo yetanotherservo;
myservo.attach(9)
myotherservo.attach(10) // <<<<<<< note the new pin numbers for the yellow / orange control wire
yetanotherservo.attach(11)
myservo.write(pos);
myotherservo.write(pos);
yetanotherservo.write(pos);
So how did you get on yesterday?- Did you get one finger clenching and unclenching?
What is that cord on the battery holder called? I really need one.
No idea