Hello all,

I've just finished my first Quad F450 build and as I tried to power it on for the first time my ESC's keep beeping and the FCU doesn't power on. It this happening cause of a faulty/wrong connection I did or do I have an issue with something from my components? My build consists of :

1. Frame F450
2. Flight Controller Unit KK2.1.5
3. Motors x4
4. ESC's x4
6. Battery
7. Tx/Rx

Thanks in advance for any help and info you can provide.

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The beeping is from the motors that is telling you that there is no valid signal coming into the ESC's.  Since your FCU is not working that would make sense.  The beeping causes no issues and is just annoying.

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