Need Help! Can someone identify these components ?

Chamrockk

New Member
Hi,
I just got into the hobby, baught a some used drone parts online, and I wonder what are theses ?
Quelqu'un saurait identifier ces composantes pouvant servir à monter un drone ?

First one :


I think it's a BEC (because of Vin, Vout) which I would use to transfer the batterie's 11V to 5V for motors..., but I'm not sure and I got nothing to actually test it

Second one:



I think this part can make a sound if I lost the drone, but I don't know what's its name so I can't do any research about it

Bonus question :


How can I know if this ESC got a built-in BEC ? I don't know what's this model's name

Thank you
 

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