Xconomy.com -- Wade did some digging in the SEC database last Friday to report that Cambridge, MA-based industrial robotics firm Heartland Robotics, founded by MIT computer science guru and iRobot cofounder Rod Brooks, raised $7 million in equity capital. Our intrepid senior correspondent also confirmed that Bezos Expeditions, which manages the personal investments of Amazon founder and CEO Jeff Bezos, took part in the round.