Hi Eva, look this link <https://github.com/JdeRobot/JdeRobot/issues/738> to solve it regards, Aitor -- View this message in context: http://jderobot-developer-list.2315034.n4.nabble.com/JdeRobot-Problem-in-drone-cat-mouse-tp4643305p4643309.html Sent from the Jderobot Developer List mailing list archive at Nabble.com.