Questions tagged [hardware]

For questions about the physical parts and components that make up a UAV.

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5 votes
2 answers
12k views

How can I configure a servo in Betaflight?

I’m looking to make a drone capable of deploying a parachute, so I need a servo release mechanism. How can I configure a servo and map it to a switch in Betaflight? Thanks.
Drones and Whatnot's user avatar
8 votes
3 answers
251 views

How do you waterproof your electronics?

I fly FPV drones a lot in the winter where it is wet and snowy. What is the best way to protect your equipment from shorting out from water?
5zero7rc's user avatar
  • 1,130
7 votes
3 answers
4k views

How to build a buddy box cable for FlySky FS-i6X RC transmitters?

I have a couple of FlySky FS-i6X RC transmitters that I'd like to use to teach my brother how to fly. I've seen other people use "buddy box" cables that connect two transmitters and allow one person ...
ifconfig's user avatar
  • 5,998
7 votes
1 answer
107 views

How to restore LiPo-powered aircraft that have not been flown for years?

I have a bunch of relatively inexpensive battery-powered radio-controlled aircraft that I haven't flown in over a year. I haven't flown some of them in over 3 years. The aircraft are airplanes, ...
End Anti-Semitic Hate's user avatar
6 votes
3 answers
2k views

How to determine the lowest safe ESC current rating for a drone build?

I was planning to build a quadcopter and was wondering how I should decide what ESC to get. I'm asking about ESC current ratings. I am building a 7 inch drone using 4s with 2306 1900Kv motors. I have ...
Jacob B's user avatar
  • 5,802
5 votes
5 answers
609 views

What affects the total flight time for a drone?

What factors would affect a drone's flight time? Battery capacity? Weight? Anything else?
user avatar
5 votes
2 answers
125 views

Does motor KV requirement scale linearly with voltage?

There have been myriad questions regarding motor KV, such as this one. Many of these come close to answering my question, however none have given me a definite answer. If I am picking motors for a ...
Drones and Whatnot's user avatar
5 votes
1 answer
283 views

What is a ground loop and how does a common ground reduce video noise?

To reduce video noise, it is often recommended to add a common ground between VTX and camera to avoid ground loops. What is a ground loop, how does it add video noise and how can a common ground ...
Drones and Whatnot's user avatar
4 votes
4 answers
2k views

How should one chose the correct motor KV for a build?

For a 5 inch, 4S build, the general advice is to go 2300-2750KV. For the same size but 6S, it should be ~1800KV. However the same motors could be used on a 4S 7 inch quad. And all of this scaling ...
Drones and Whatnot's user avatar
3 votes
1 answer
238 views

How does a propeller with more blades create more "grip"

I have heard that the more blades a prop has, the more "grip" it has in the air at the expense of speed. How do more blades create more grip but lose top speed?
Jacob B's user avatar
  • 5,802