Bitcraze Forums

I bought two Crazyflie 2 copters. The one connects and operates fine to my android device but the other does not connect at all. When I power it up, it spins, self test ok, but when I click 'connect' on my android device it says connected but the green led does not flash as with the other one. After a while it says disconnected again. I did load the latest firmware on both of them. The two blue led's are on, the red is flashing two times per second, but when I click 'connect' on the android the button turns blue (connected) but the green led does not flash.

I did un-pair the device, tried another phone and tried everything but the green led simply does not start flashing. The other one works perfectly every time.

Did you try scanning for the Crazyflie 2 that can't connect in the settings menu?
How did you flash the firmware?