RYAN HUTTON/ Staff photo
From left, Andover High School seniors Aum Trived, 18, Aurash Bozorgzaeeh, 18, Joshua Krinsky, 17, and Alex Yang, 17, try to get one of the smart-phone powered robots working at the Derive Robotics class they teach at the Faith Lutheran Church in Andover.

180418RHUrobotics008Andover TownsmannwsFaith Lutheran ChurchclassAndover High Schoolseniors