The robot communicates with a Processing sketch that translates a virtual model of the arm to motor movements.
Download the Processing sketch from Fixbot's Github
page. Plug in the Arduino to your computer's USB port and run the Processing sketch. The robot should follow the movements you're doing on the computer!
Click to move the robot's finger!
There is an alternative, more experimental sketch that you can use to draw movements for the robot. The robot then executes them repeatedly.
Note: If you get an error whilst trying to run the sketch, it's probably because the Arduino is on a different port than the one that's hardcoded into the program.
Go to this line in the program:
String portName = Serial.list();
and try to change the 0 to 2 or 4. Most of the time, that fixes everything and you should have a healthy robot.