Questions tagged [quadcopter]

A quadcopter, also known as a quadrotor, is a multirotor helicopter that is lifted and propelled by four rotors.

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2answers
544 views

If you can create pure yaw motion with a quadcoptor then why won't this work with a tricoptor?

An answer to the question Why are quadcopters more common in robotics than other configurations? said: You need 4 degrees of freedom to control yaw, pitch, roll and thrust. Four props is therefore ...
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5answers
8k views

Track a moving object

If this has already been answered, by all means please point me to it. I am in the process of building a quadcopter which I eventually plan to run autonomously by allowing it to track an object and ...
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1answer
3k views

Use of automated tricopters instead of quadcopters? [duplicate]

Hy, I just found useful to post my idea here. I've seen videos about automated quadcopters: http://www.ted.com/talks/raffaello_d_andrea_the_astounding_athletic_power_of_quadcopters.html and http://...
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3answers
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Quadcopter application underwater

Just out of curiosity, can the concept of a Quadcopter be applied to an ROV? Would it work the same way underwater as it would be in Air? If not what kind of modifications it would take to implement ...
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2answers
2k views

Does more "Power" (W) means better motor?

If a motor has more Power (W) from another it means that it is better?
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1answer
893 views

Is this a good quadcopter build? [closed]

3D CAD: After some editing: I'm building the frame myself from aluminum and polycarbonate. EDIT: all frame is polycarbonate except of the arms (and all screws & nuts & washers)), they are ...
2
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1answer
3k views

Most material efficient quadcopter frame

I haven't made or flown any quadcopter, but I am fascinated by them. But when looking at the frame of a lot of designs, after whachting this video I wondered why a lot the frames are in an X shape. ...
4
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3answers
4k views

Controlling a quadrotor from a PC

I need to control quadrotor from a PC, without using a joystick. I have got a mini-beetle quad V929 Beetle 4-Axis and also have this NRF24L01+ Wireless Transceiver Module Chip (2.4 GHz ...
4
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1answer
772 views

Prop Orientation on a Multirotor

While looking up information for the right propellers for my quadcopter, I realized that they had different orientations i.e. Clockwise and Counterclockwise. On further research I found that all multi-...
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7answers
1k views

Aluminum vs Carbon Fiber

So building a quadrocopter from scratch HAS a lot of decision making, and I need some input on the material choice. I have short listed Aluminum and Carbon Fiber for the Arms and support of the ...
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3answers
1k views

Permission to fly UAVs

Okay, this might sound like a stupid question but, is there some sort of a permission in the US I might require to fly a quadcopter or a UAV for that matter? I couldn't find much help anywhere else.
3
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1answer
124 views

Multicopter odd or even [duplicate]

I would like to ask which is better to design the multicopter with odd or even number of propellers? and why?
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1answer
491 views

Is there a benefit to using 2 IMU units on a UAV set at different sensitivities?

I noticed that some IMU units are tuned to be sensitive to small changes, other to large changes and some that can be adjusted between different sensitivities. I am familiar with the use of a Kalman ...
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5answers
15k views

Using an Xbox controller to fly a Quadrocopter

So I have a quadrocopter, it does come with a remote but I intend to run certain modifications to the copter, like installing a camera, a mechanical manipulator, and other random modifications. The ...
6
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1answer
825 views

Quadrotor control using ArduIMU

We are using ArduIMU (V3) as our Quadrotor's inertial measurement unit. (we have a separate board to control all motors, not with ArduIMU itself). As mentioned here , the output rate of this module ...
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3answers
14k views

How to stabilize a quadcopter

Today was my quadcopter's first "flight". I'm running megapirate on a Crius AIOP v2 with a Turnigy Talon v2 frame. I only touched the throttle stick on my remote, nothing else. When I felt the ...
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1answer
1k views

Minimum speed controller refresh rate [duplicate]

In a quadrotor we need to change each motor's speed depends on its position in space. More frequency will result more stability ( I mean if we can change motor's speed 400 times per second instead of ...
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6answers
1k views

Is it possible to make Kite flying robot?

This question was asked in electronics stackexchange. I want to know if is it possible to make a robot that can fly kites. Is this idea practical? I was thinking that making a kite is just like making ...
3
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1answer
6k views

One BEC for multiple ESC (Quadcopter)

I'm building a quadcopter and have discovered that most ESC have a built-in BEC, but I was wondering if it wouldn't be better to use only one. What if I delivered power to my four ESC with a unique ...
8
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1answer
912 views

Dropping PWM on Ardrone Parrot 2.0

I am having some issues with the ARDrone Parrot 2.0 and hope someone else may be running into the same thing. While hovering, the drone is (seemingly) randomly losing altitude then recovering . It is ...
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5answers
6k views

3D Mapping from a quadcopter with KINECT [closed]

I have a quadcopter robot that has a KINECT on it and i want to do 3D mapping with it. Is KINECT reliable on a moving robot (i.e., can it give me stable images and maps with this movement)? Is there ...
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1answer
5k views

What microcontroller should be used for QuadCopter flight control and ESC? [closed]

I am working on building my own quadcopter from scratch. I noticed that many solutions available online use arduino, but I am not a fan of arduino. So my questions are: what microcontrollers should be ...
9
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1answer
5k views

How to balance a flying quadcopter?

I'm using my own code to create a quadcopter robot. The hardware part is done but I need to balance the copter. The original video demonstrating the problem was shared via dropbox and is no longer ...
9
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2answers
992 views

Guiding a Quadrotor Towards a Target

I am working on a quadrotor. I know its position -- $a$, where I would like to go -- target position $b$, and from that I calculate a vector $c$ -- a unit vector that will take me to my target: <...
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4answers
45k views

Quadcopter liPo battery weight/capacity trade off

I'm trying to find where additional battery capacity becomes worthless in relation to the added weight in terms of a quadcopter. Currently with a 5500 mAh battery, 11.1V, I can get between 12 minutes ...
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4answers
4k views

Why are quadcopters more common in robotics than other configurations?

I've noticed that almost all research being done with helicopter robots is done using quadcopters (four propellers). Why is there so little work done using tricopters in comparison? Or a different ...
6
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3answers
2k views

Questions about quadcopter and radio controller

I have not bought any parts yet, but I am making my own quadcopter. I have done the research and know all about the parts that I need, but many guides are sponsored and cost thousand(s) of euros/...
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3answers
3k views

Quadcopter Localization Beacon

I want to use an RF beacon to localize my quadcopter for autolanding, when GPS is not precise enough, for example, when my driveway is only 10 feet wide, and the GPS is only showing 20-30 ft. accuracy ...
21
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5answers
2k views

Is it better to have batteries distributed at the rotors or the center of the multicopter?

I've seen 3 approaches to mounting batteries on a multicopter: All the batteries rigidly mounted near the center of the airframe All the batteries in a bag hanging under the center of the airframe ...
20
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4answers
6k views

What frequency does my quadcopter output-sense-calculate-output update loop need to stay stable?

With a 600 mm (2 foot) motor-to-motor quadcopter, what frequency does my output-sense-calculate-output update loop need to stay stable? I'm estimating a total takeoff weight of very roughly 2 pounds (...
42
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2answers
69k views

How to choose the right propeller/motor combination for a quadcopter?

There are many sites which explain briefly this problem and even propose combinations. I however would like a much more detailed explanation. What is going to give my quad the most agility? Do I need ...

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