Robot arm with led blink warning before it moves and button

I had to make some changes to the code. I had to change the servo library add a bunch of delays and use switches in the simulator instead of break beam sensors. Just flip the left switch to trigger break beam sensor 1 and flip the right switch to trigger break beam sensor 2. Remember the robot wont move until break beam sensor 2 is clear or the switch turned off in the simulator. Thats to simulate an object already blocking the place where the robot is to set an object down.