My Intro to Engineering class has been tasked with a robotics project using the Board of Education. I've built robots before, but not with Parallax products.
I've just gotten to point of using servos in the "Robotics with the BOE Bot" book that comes with the BOE. The book says to put a jumper (between the servo ports) over Vdd if using a 7.5V DC power supply or over Vin if using a 6V battery pack. I'm using a 9V battery, which obviously isn't either.
So, where do I put the jumper? If someone could explain why I put the jumper there (e.g. voltage is greater than 6V, or something), that would be helpful, too.
I'm using a BOE Revision D with BS2 Rev. J.
EDIT: By the way... our instructor pointed us to the forums if we needed any help. He's fine with us asking questions on here--it's not cheating/unwanted in any way.