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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How to use depth map in A* path planning?
I've currently built a quadrotor with standard PID controllers for attitude, angular rates, and position control. I now want to implement obstacle avoidance and path planning using A*. I have a stereo ...
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0answers
21 views
Combining P and D gains properly
I'm trying to perfectly tune my quadcopter and I'm at the point where P gain feels about right as it tracks my stick movements perfectly, yet it wobbles after a sharp stick input. If then I raise my D ...
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2answers
48 views
How a quadcopter pitch/roll impacts thrust?
I'm thinking about how a quadcopter flight controller works, and I usually see that each motor speed is determined by a formula like:
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2answers
97 views
Quadcopter motors vibration problem
I built an Arduino Due based quadcopter, with MPU-6050 for auto levelling and BMP-085 for Altitude.
I am using Kalman filter code from here for the MPU-6050 to take the Roll and Pitch angels from the ...
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2answers
67 views
Why do we need to design controllers (feedback) for controlling a quadrotor?
For example if I want to make my quadrotor hover at a particular height, can't this be achieved by using an altitude sensor, and to correct it's position due to disturbances, can't we just write some ...
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20 views
Naze32 flight controller not connecting to RC
Cleanflight reads my Naze32, but the RC values aren't responding at all. Everything is connected and double checked that the wires were connected properly and firmware was flashed. Just not getting ...
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1answer
62 views
Arduino based quadcopter flipping problem [closed]
I have built an Arduino DUE based quadcopter and I am using HC-12 as a transmitter and receiver between my laptop and the quadcopter. What am I doing is just send a speed value from my laptop and ...
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1answer
23 views
what specification required for quardcopter to pickup 5kg weight
For a college student project, I am designing a quadcopter with a payload of 3-4kg.
As I am new I don't know what are the implications of such a requirement on the quadcopter design.
In particular ...
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1answer
34 views
DJI E310 Thrust Coefficient
I am reading Denis M. Filatov et al.'s paper "Parameters identification of thrust generation subsystem for small unmanned aerial vehicles" (https://www.semanticscholar.org/paper/Parameters-...
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2answers
90 views
How to implement a novel control algorithm for a drone
I and my research team are working on a novel drone design based on trirotor. The difference between this design and a trirotor is that it has an extra propeller to generate additional thrust, ...
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2answers
41 views
sampling algorithms in motion planning and local minima
I am trying to run RRT algorithm for motion planning for a quadrotor. The quadrotor ends up sometimes in corners without reaching the goal. I realized from sources online, that it is due to local ...
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1answer
85 views
Wait simulation time in a non realtime ROS simulation en python
I want to control a quadrotor with a Python script and run the simulation as fast as my laptop can, not only in real time. I've modified my world and now the simulation runs with 7-10 real time factor....
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1answer
73 views
stable altitude quadcopter
I'm currently working on a project to generate a stable altitude and automatic control for a quadcopter
I'm using arduino as the flight controller
Ultrasonic sensor HC-SR04
MPU-6050
However my ...
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1answer
85 views
Quad-rotor 1-D Linear Control Simulation with MATLAB
I was Performing Programming Assignment with MATLAB for Quad Thrust and Height for an Introductory Course. The control input for a PD controller was According to the Equation
u = mass*(diff(s_des, 2)...
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1answer
128 views
What's the main difference between different motion capture systems (Vicon, Optitrack, etc)?
Last month I visited a quadrotor laboratory ($ 20m^2$ approx). They used both Optitrack and Vicon systems. However, they told me that Vicon cost 10 times as much as Optitrack. Considering that any ...
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1answer
430 views
MSP (Multiwii Serial Protocol) receiving data with pyMultiWii issue
I want to get telemetry data from my flight controller (Matek F405-CTR) and send control commands to it via MSP protocol.
I've already configured UART3 port on Matek in Inav configurator (look at pic)...
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2answers
45 views
Powering multicopter with multiple dedicated batteries
I am in the starting phase of building a fairly large octo-copter drone. I am currently thinking about the possibility of powering my octo-copter design using 4 separate batteries where each battery ...
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1answer
25 views
Excessive Heat Coming From Video Transmitter and Motor Electronic Boards
I'm building a quadcopter and I'm finding that certain electronic boards are heating up beyond what I believe the heat should be.
In this case I hooked up the video transmitter and then tested it. ...
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1answer
33 views
publishing on rostopics
I want to publish via terminal a particular message format - sensor_msgs/Joy. However, every format I use seems to be wrong and I cannot understand how it is meant to be written on the terminal. On ...
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1answer
43 views
Quadcopter ESC failure on first test flight
One of my four ESCs burnt out on a first test flight of a new quad build. I plugged the battery in, armed the drone, and one of the motors spun for less than a second before stopping. I immediately ...
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1answer
61 views
c++ Library for trajectory correction
I have a trajectory of a quadcopter in 3D. Out of all the poses in the trajectory, I want to correct one of the poses. I then want to adapt the rest of the poses based on the newly corrected pose. I ...
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1answer
48 views
BetaFlight sees motors working, but motors not spinning
I am using FlySky i6 Transmitter and a FS-iA6B receiver.
I have it set up using PPM and BetaFlight recognizes the motors in the Receiver section. All the values adjust according to the toggles and ...
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1answer
62 views
Can quadcopters save energy by flying in formation?
If two or more quadcopters are aligned, would the effect of drag due to the lead quadcopter's slipstream lead to measurable energy savings? And if so, how would one determine the optimal distance ...
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26 views
What are the considerations when using a sensorless driver
I am planning to build a quadrocopter and consider using BLDC motors. For some of these motors dedicated discrete drivers are available, but they come very expensive. On the other hand, there are ...
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1answer
59 views
More than 6 cameras in Nvidia Jetson boards
A recent startup named Skydio develops autonomous drones for photography. The drone is named as R1 and utilizes 13 cameras to map its surroundings for localization and motion planning. The brain of ...
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0answers
28 views
Motor propeller combination query
I'm building a drone. It is an octocopter with two propellers on each side. I'm using 2 propellers on each side for redundancy purpose, beacuse it will be carrying a heavy camera.
My drone weight is ...
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1answer
61 views
Doing a project for college for a manned drone theortically only
Weight of the Drone in total will be 240 Kg.
It Will be a quad copter drone setup but with 8 rotors(two on each corner) for redundancy purpose.
Aim is achieve Thrust/weight ratio of 2.
So need total ...
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0answers
53 views
ZED stereo camera with TX1 for NON-GPS RTL
My question is regarding ArduPilot firmware specific to copter.
It is mentioned in the ardupilot documentation that ZED camera may be used as an alternative to GPS based navigation. It actually holds ...
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0answers
120 views
Interfacing a Flight Controller with an Arduino?
I would like to know if it is possible to read telemetry data from a flight controller such as the Omnibus F3 or Seriously Pro F3 using an Arduino.
The end goal is to be able to program certain ...
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2answers
121 views
Quadcopter mathematical model and controller design
if we just examine the translational dynamics (X and Y direction), the dynamics are coupled, So if I want to design a PID controller to control the position, the outcome will be unpredictable because ...
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0answers
237 views
Quadcopter flight controller alternatives
I've built my first Quadcopter following this instructable http://www.instructables.com/id/The-Pi-Quadcopter/
So like it says, the way I achieve communication with the drone is via an Android app, ...
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1answer
20 views
Drones classification based on flying mechanism and communication link
I am confused about autonomous drone flight. Thats why I am asking the question here so that a drone expert can help me to understand.
I have heard about tow kinds of drone
drones that work through ...
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0answers
12 views
Dimensions of an X Quadcopter frame
I'm writing a paper on the calculations required to design of an X frame Quad copter for any particular load.There isn't a lot of material available to guide me through what actually needs to be ...
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2answers
45 views
Compatibility of my quadcopter build
I am building my first quadcopter and have multiple questions. I am using a Crius MWC Multiwii SE 2.6 flight controller which will get input from a Raspberry Pi Zero.
I have this 4in1 ESC and this ...
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0answers
43 views
Quadcopter bldc PID control
Working on stabilizing a Quad using Arduino Due. I have slightly modified one of the examples of Jeff Rowberg's library to give yaw, pitch and roll angles (zero initialized angles). Moreover, I am ...
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0answers
70 views
Multiple antenna styles on FPV without true diversity
I did a search and couldn't find a site that stood out as RC. I was hoping you guys would be closest. Here's my question.
I bought a set of Eachine EV100 FPV goggles. Every resource I've looked at ...
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0answers
103 views
Treatment of euler angles in quadcopter control
In most implementations of quadcopter control systems I've seen, each axis of the quadcopter is controlled independently. For example, to control the rate in the roll axis, the desired output is ...
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0answers
26 views
how to get velocity of Ar drone 2.0
i have question about AR Drone 2.0. i am using ROS Gazebo and Python. my question is how to get velocity of quadcopter? i need velocity to count position of quadcopter. Thankyou.
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2answers
152 views
Quadcopter stable with angular velocity but not with absolute angle
I'm making a flight controller for quadcopter. It is very stable when regulated by angular velocity, but it is horrible when regulated by angle. What are the potential problems when regulating a ...
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0answers
63 views
Quadcopter with wind effect
I drawn the Simulink model of a quadcopter with virtual joystick input and now I want to add the wind but I am little bit confused how to add wind with that model. actually my model is like that input ...
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1answer
34 views
Find IMU based on previous works [closed]
I'm building a quadrotor robot and my supervisor has asked me to make a report of the IMU modules used in previous works, I couldn't find such reports however. Does anyone know how to find such ...
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0answers
66 views
Connect Multiple Drones with ground computer over wifi
I want to control Multiple UAVs with Qgroundcontrol (similar to this simulation) over wifi. For single drone control, I can connect my pc to the wifi of a drone but I can't change to select other UAVs ...
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2answers
67 views
Receiver is getting really hot
I am building a quadcopter and I am on the last part of it (normally the exciting part) where I bind the controller to the receiver.
I can get the receiver, which is plugged into the quadcopter, to ...
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2answers
158 views
How do I tune the cascaded PID controller in my flight controller?
there is a lot of information out there on how to tune quad PID parameters. However, they mostly regard only the master loop that takes user input and fused absolute angles. How and in which order do ...
2
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1answer
233 views
MPU6050 inconsistent Gyro data
I'm using an MPU6050 for a custom flight controller and I am facing an issue when reading the values from the IMU. The data shown below represents the angular velocity in the y-axis. When the angular ...
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1answer
86 views
Quadcopter stabilisation
I recently built a quadcopter and programmed a code to stabilise itself.
The copter takes the hight from a distancesensors and the angle from a MPU 6050 gyro and accelerometer with a complementary ...
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0answers
399 views
How can I send commands from raspberry pi model 3B to Seriously Pro 3 Flight controller? [duplicate]
I am trying to make a quadcopter that receives commands from my android mobile phone. I currently have the following:
Raspberry Pi 3 Model B running on Raspbian.
Pi Camera
Seriously Pro F3 Flight ...
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1answer
87 views
Quadrotor 2D Dynamics
I am trying to understand the control of the quadrotor in 2 dimensions from the Penn course on aerial robotics. The attached image describes the linearization of the control efforts assuming that the ...
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1answer
136 views
Quadcopter filter and Angular rate vs angle (Arduino programming)
I wrote an Arduino program for my quadcopter that sets to power of the 4 ESC's using software. Now I need to incorporate the gyro and add a "Complementary Filter" to stabilize it.
I am currently ...
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1answer
59 views
integrating perfect rate gyro data (noiseless)
Having a perfect gyro (with no noise/drift or bias), the gyro produces angular velocities in the form (wx, wy, wz) in rad/sec.
I would like to convert the rate gyro readings (which are expressed in ...
