<p>WESTFORD -- There's a lot of trial and error involved in perfecting a robot so it will do just what you want it to.</p><p>But junior Alex McKinley, 16, head programmer for the Westford Academy Robotics team, said he likes to think it's a bit more specific than that.</p><p>Prepping for their big state competition in early March, McKinley worked with his peers, 16-year-old juniors Angus Chow and Matt Lotti, to set up their machine called "Marvin." They tried to get the parameters and angles just right, running the bot through a series of movements on a 12-foot-wide playing field.Westford Academy junior Geoffrey Thomas, 17, left, poses with freshman Jason Kottas, 15, next to their team's robot, named "Ghost Rider." The school's robotics team has worked for months to develop their designs and will go to state competition early next month. Sun / Samantha Allen</p><p>Sun staff photos can be ordered by visiting our Smugmug site.</p><p><a href="http://www.lowellsun.com/local/ci_25246308/westford-academy-robotics-team-ready-test-its-metal">Keep reading...</a></p>