Hello there, 

i finally finished my first copter. Speedybee F405v3, i flight 1950 and the Airunit o3. I use them with the Googles V2 and the Remote 2. I flashed the drone and did my setups in Betaflight. OSD is working and showed in the Googles perfektly. When i Start arming the copter or testing the Motors in Betaflight, the Copter shut down after 1-4 Sec. The airunit is blinking 2-4 times red and the ECSs are beeping  and it shut down.

After that all Voltage on my Fc is 3,3 V (before i arm, every Voltage is perfectly). The FC is still working but my Airunit o3 is down, connection to remote and googles lost. 


OSD shows BADRX (when i fly my old avata with it sometimes it says throttle is not at 0 but it is...) Could that be the problem ? I have only that Remote and remotes are so expensiv   OSD is showing Trottle T at 1000 when i pull it 100% down....

Please help i searching since days..

are you powering the drone with lipo when you are testing the motors? you need to connect a lipo.

if you are connecting a lipo, are you using some kind of current limiter (smoke stopper). if you are, then that is causing the problem. since everything is working, I would take the current limiter off and test the motor with direct lipo connection.