Algorithm to scan the CPUs

0. Insert the tray.
1. Home the motors.
2. Move the X axis cameras to the begging of the tray
3. Take pictures
4. Step the X axis camera to the next position
5. Repeat step 3 and 4 until X axis has moved to middle bar of the tray(indicating the end of the first CPU)
6. Move the Y axis to take the next picture.
7. Repeat steps 3 to 6 until we get a stop signal from the to indicate the end of the cpu in the Y axis. (We did not use the switch, but rather we used a software implementation of switch behavior. See code for this)
8. Increase counter to count the number of dividers of the Y axis
9. Increase the counter for CPU scanned.
10. Repeat steps 3 to 8 until the number of Y axis scanned is reached.(In this case is 3 because we have two rows and total of 6 CPUs.
11. Now reset the counter for the Y axis and home the Y is.
12. Move the Y axis to the second half of the try(to start scanning the right side)
13. Repeat step 3 to 10.
14. Eject the tray.
15. Done scanning.