Drones flying to the ceiling

[sbrels4d]

Hello,

I am currently instructing a camp with about 20 CoDrone Lites. All of them appear to be drifting up to the ceiling immediately on take-off. I've tried recalibrating several times, but the recalibration doesn't always run, and when it does, the drone flies up to the ceiling again on take-off.

Is there something else that can be done, because we have several campers that are getting discouraged by lack of success with their codes.

Thanks,
Steve

[robolink_leila]

@sbrels4d CoDrone relies on the optical flow sensor and height sensors for its position. If you have some highly reflective floors or are flying in a dark room, it might be difficult for the drone to stabilize. If you have labeled the bottom of the drones, make sure nothing is obstructing the opening where the sensors are. Let us know if you have any questions! Feel free to attach pictures of the bottom of your drones and the classroom.