Move the arms around to get the orange inside the red circle. When it's inside, drop it. (Trying to drop the orange when it's not inside the circle won't drop it.) Controls: Use up and down arrow keys to select the arms. Use right and left arrow keys to turn the arm you're selected on. Press space to drop the orange. Press s to skip.
What I've changed: I've made it so that when you rotate the base and the middle arms the following arms also rotate to simulate a more realistic robotic arm.