Hi Guys,

I started to assembly DJI F550, this is my first assembling drone.

I am having doubts about ESC configuration.

I did the ESCs limits configuration, but when i turn off the drone battery, i need to configure again the ESCs limits and the ESCs emits a continuous sound every 3 seconds.

- ESCs model: RCTimer 30A OPTO Brushless SimonK Firmware

- Rcmodelpart APM2.8 Flight Controller + CRIUS NEO-7M GPS Module + Power Module APM2.6 Updated

- RAdio Flysky FS I6S 10ch 2.4G

- Flysky FS-iA10B 10CH Receiver 

- Hensych Lion Power 4s 14.8V 5200MAH 30C Lipo battery For RC Car Helicopter 6 Channel

If someone know something about that situation, please help me.

Thank you

Sergio