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Questions tagged [drone]

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robot_localization for a drone [closed]

I'm currently programming a drone using Ros2 Humble on a Raspberry Pi and I'm trying to add robot_localisation to it. I only have one IMU (ICM20948) and I want to get as much information as possible ...
Mat Wac's user avatar
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1 answer
27 views

How to provide velocity command from difference in position?

I am trying to make my drone follow aruco marker , earlier I was using difference in position multiply by PID value and feeding it that but people over the internet suggested that using velocity ...
Ankit Kumar's user avatar
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1 answer
220 views

How i can build a drone using ROS2 Humble and Gazebo? [closed]

I´m very new to the game. Currently I´m trying to simulate a drone with ROS2 Humble and Gazebo 11. I have already build a URDF File and launch file to visualize it in Gazebo. I searched on Youtube and ...
lukaz55's user avatar
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1 answer
105 views

Drone Flight Controller and Firmware that supports ROS2

I am a newbie to Drones, I looked into many articles over the internet to find out which flight controller should I use, but not fully able to understand as the cheap flight controllers like speedybee'...
Ankit Kumar's user avatar
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0 answers
15 views

Subscribing custom topic in ros-mobile

I am using px4-sitl and mavros for UAV simulation in ros noetic and try to teleopt the drone using ros-mobile. what I noted mavros has its own message type defined like ...
Mubashir's user avatar
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0 answers
27 views

Wind effect on a drone: formulation

When the drone flies in the open space the wind acting on it creates aerodynamic drag force and the aerodynamic torque. So when I want to simulate the drone flight using the state space equation do we ...
Alisa976's user avatar
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0 answers
78 views

F450 Quadcopter frame torques

I'm building a quadcopter and programming it's flight controller which is running on a RP2040. These are its main characteristics: Frame: DJI F450 Radio: FlySky FS-I6 IMU: Adafruit BNO055 Breakout ...
Alex Foglia's user avatar
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0 answers
25 views

URGENT:Unable to takeoff drone automatically in real life(Navio2 with Ardupilot via MavROS)

I am currently working on a project that utilizes hand gestures to control the drone without GPS. I was able to arm the drone but cannot seem to make the drone take off after arming in real life. This ...
Alex's user avatar
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1 answer
26 views

In a Blank Webots World, How to Operate the Mavic

I need to operate the mavic drone in a world other than its demonstration but when I do so the robot will just crash to the ground. I thought it was the world parameters or the controller that was ...
Léo's user avatar
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0 votes
1 answer
691 views

SOLVED: How to visualize in rviz2 fixed frame a Pointcloud2 collected w.r.t. a mobile frame

I'm using ROS2 Humble on Ubuntu 22.04. In my project I'm trying to visualize in rviz2 a pointcloud generated by a depth camera, mounted on a drone simulated in gazebo garden. Thanks to this topic I've ...
AleCavalliPolito's user avatar
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0 answers
7 views

Using Image Stitching for X,Y Pose Estimation in Quadrotor Navigation: Feasibility and Limitations

I'm exploring the feasibility of inferring the x, y pose of robots without direct positional data but utilizing image stitching. Here's the scenario: I have multiple drones equipped with downward-...
hunterlineage's user avatar
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0 answers
28 views

Parrot ANAFI drone parameters

I have a project include the use of Parrot ANAFI drone, however I don't have the values of the inertial parameters such as the mass moment of inertia (I_x,I_y,I_z) only the mass is known. Can you ...
Baker Shehadeh's user avatar
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1 answer
55 views

Crazyflie: Connecting, logging and parameters-->Add logging config

I would like to define stateEstimate.vx, stateEstimate.vy, and stateEstimate.vz variables to ...
nejattukenmez's user avatar
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1 answer
118 views

/cmdVel topic: cmdVel(roll, pitch, yawrate, thrust) for crazyflie

We are working on Crazyflie 2.1 to implement our controller by utilizing ROS2. We used the following repository on GitHub to make it possible. crazyflie experimental We'd like to access ...
nejattukenmez's user avatar
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1 answer
33 views

Mambo parrot /tello control propeller speeds

From my understanding, for parrot mambo and tello drones, we control forward-backward, up-dow, left-right, and yaw speeds (in m/s and deg/s). But the low level control is control the 4 propeller ...
Jose Daniel's user avatar
1 vote
1 answer
61 views

Guide Drone using GPS

I am new to drone building and developing. I am using Cube Orange plus and gps module from company Taoglas. My GPS is fixed few cm above esc. The drone is drifting too much when I am keeping it at a ...
Ankit Kumar's user avatar
0 votes
1 answer
200 views

"world" frame does not exist in tf tree when launching gazebo simulation

I'm trying to work with sjtu drone simulator (https://github.com/NovoG93/sjtu_drone). I'm using ROS2 humble, Gazebo 11. When I launch the program, using: ros2 launch sjtu_drone_bringup ...
oferb's user avatar
  • 1
0 votes
0 answers
276 views

Estimating gyroscope bias for attitude IMU sensor fusion with an unscented Kalman filter

I'm trying to use a UKF as the attitude estimator for a drone with just a gyroscope and accelerometer as sensors. So far, it's going well and after some tuning appears to perform basically as well as ...
brennanenanen's user avatar
1 vote
2 answers
297 views

How to recover low voltage LiPo battery?

I am using a 3-cell LiPo battery for a quadcopter. My charger is the Prophet Sport Mini Multichemistry charger. It has built-in undervoltage protection, meaning it will not charge a LiPo or LiFe ...
HyperProxy's user avatar
1 vote
2 answers
222 views

Using Here3+ for GNSS information, missing documentation?

The Here3+ is a GNSS receiver often used by drones, specifically the pixhawk. I wanted to use this receiver in my own project for geopositioning, I am however completely unable to find any ...
kees jansen's user avatar
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0 answers
33 views

Need to automate some simple actions of a drone

I am working on a student&enthusiast project that includes the participation of a few drones (copter-type). Right now, there is nothing complicated in their movements, just, for example 100 meters ...
Gela O.'s user avatar
0 votes
3 answers
1k views

Designing S-Curve velocity profile for given Distance

I'm trying to create a high-level API for controlling a drone, where I tell it how far I want it to go (eg. moveForward(10)). The SDK allows me to give the drone an ...
dkapur17's user avatar
  • 101
0 votes
1 answer
129 views

3D path planning for coverage of a given surface

I have a 3D model of a complex object. I have been able to generate all possible points that are around 1 m away from the surface of any part of the object, so the collision is not possible: Now my ...
Ekci's user avatar
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0 votes
1 answer
44 views

Do electromagnets affect magnetometer calibration?

I am designing a landing pad for a drone that will have electromagnets built into the pad. My drone has a pixhawk 2 with PX4. I'm worried that the electromagnets in the pad will throw off the drone's ...
Sam Chamberlin's user avatar
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0 answers
54 views

What autopilot options are available for nano helicopters?

I am new to the world of drones and UAVs. While there are a ton of resources available online for quad-copters and multi-copters in general, I am really struggling with finding resources on ...
jar's user avatar
  • 101
0 votes
1 answer
79 views

Vulnerability of LiDAR systems for autonomous drones

I will soon be working on an autonomous drone project and we're planning to use LIDAR systems for localization & mapping. However, at the same time, we are looking into how to make drones safer ...
Azrion's user avatar
  • 3
1 vote
1 answer
107 views

What devices can I use as a flight controller in a Quadcopter project? [closed]

I know that the flight controller is the heart of the quadcopter and a device which has to be considered greatly when building a quadcopter project. In regards to this quadcopter project that I'm ...
Mubashir Hussain's user avatar
1 vote
1 answer
73 views

Drone lost traj recovery

So I am using slam algorithm to localize the drone which is gps denied . The input to the slam algo is imu data and a video . Now after the first run of the slam algorithm it creates the trajectory ...
Karan Katiyar's user avatar
2 votes
1 answer
299 views

What can cause yaw rotation on a multirotor when yaw control is disabled?

Let's assume that I assembled a multicopter (quadcopter, hexacopter or octocopter) and let's say that I disable yaw control on it while roll and pitch controllers are enabled. Now let's assume that I ...
desmond13's user avatar
  • 211
1 vote
2 answers
1k views

To calculate roll,pitch and yaw

How do I calculate roll,pitch and yaw value from the position co ordinates of the drone, that is x,y and z from the gps sensor??? Using the x,y and z co ordinates I have to calculate roll,pitch and ...
Anonymous's user avatar
0 votes
1 answer
224 views

Communication method between drone swarm members

I am a doing my FYP in drone swarm anti collision algorithm. The project aims to develop an algorithm to fly a minimum of 3 drones and here are the requirements: 1-the drones can identify the ...
Sahel Wahdain's user avatar
0 votes
1 answer
223 views

Imaginary part in result of inverse laplace transform

I am working with a system(closed-loop feedback control) that has a transfer function like this F = 20*(s+5)/(s^4+13.5s^3+41s^2+80*s+100) this one is in the s-domain but for the response analysis, I ...
ShivamPR21's user avatar
4 votes
1 answer
75 views

Universities offering courses about Drones (Unmanned Aerial Vehicles [UAVs]) [closed]

I am trying to gather some information about university courses offered about drones (or Unmanned Aerial Vehicles). At the beginning, I thought that I would have found way more than what I found and ...
desmond13's user avatar
  • 211
0 votes
2 answers
128 views

Finding the right PD values for a quadcopter simulator

I am working on this short assignment where I have to find the right PD values for a simulated quadcopter. I have to reach 0.9 meters under 1 second with an overshoot of less than 5%. This is my ...
Levent Ozbek's user avatar
0 votes
1 answer
190 views

How to calculate the pitch of the quadcopter rotor blade and their efficiency?

I have gone to some of the blade designs and profiles of the blade which suits my requirement. But, once after entering the Theoretical calculation, I was stuck in the determination or the ...
Praveen kumar selvaraj's user avatar
0 votes
1 answer
44 views

Setting up rewards to account for UAV crashes (Reinforcement Learning)

I am working on a project to implement a collision avoidance algorithm on a real UAV. I'm interested in understanding the process to set up a negative reward to account for scenarios wherein there is ...
desert_ranger's user avatar
0 votes
1 answer
3 views

[ERROR] [1588286007.343230]: Current /drone/down_camera/image_raw not ready yet, retrying for getting down_camera_rgb_image_raw

I am using a script (appended to the end of this post) to setup my workspace on my Ubuntu18.04. After setting everything up I ran the following lines: Terminal 1: ...
user avatar
0 votes
1 answer
224 views

EKF-SLAM what should the observation model be?

I am implementing an EKF algorithm for a drone localization, and while I was defining the observation model I got a bit confused. This is my situation: I have a drone which is able to give me the ...
adiego73's user avatar
0 votes
1 answer
78 views

Drone or UAV Platform for deployment of Deep Learning / Reinforcement Learning

Good day, It has been a while since I last posted. I would just like to ask if anyone part of a lab or company doing research on aerial robotics has any suggestions of a good platform for deploying ...
user123456098's user avatar
0 votes
1 answer
10 views

Drone for mavros

Hi ! So I want to build a small drone(can be tested in lab) and deploy ROS on it. Can anyone help me with what motors and flight controller that I should use to do so ? I want to use mavros_pkg so ...
user avatar
0 votes
1 answer
6 views

Ardupilot + ROS

Hi ! I have made a hexacopter with APM 2.8 and would love to deploy ROS on it using a Raspi. I aim to use opencv with ros to detect landing marker and make it land autonomously. But I don't know what ...
user avatar
0 votes
1 answer
14 views

Autopilots which are compatible with ROS

Where can i find their list please help Originally posted by gadamer on ROS Answers with karma: 11 on 2018-03-18 Post score: -1
user avatar
0 votes
1 answer
66 views

Drones compatible with ROS

Hello everyone, I'm currently looking a drone compatible with ROS and i need some buying advice. Currently i was working with a parrot bebop, coupled with a S.L.AM.Dunk also from Parrot. but it's not ...
user avatar
0 votes
1 answer
10 views

Drone Simulation using GMapping and Realsense R200

Hi, I'd like to simulate the RTF Drone from Intel which has the R200 Camera as the main sensor. I'd like to use it for mapping simulations with GMapping. I want to build a launch file to load world, ...
user avatar
0 votes
1 answer
12 views

Indoor Mapping and Localization for Drones

Hi, I am assembling a drone using the Intel® Aero Compute Board, Intel® Aero Vision Accessory Kit (Intel® RealSense™ R200 stereo camera) and other sensors. I don't know where to start and which ...
user avatar
0 votes
1 answer
7 views

Drone doesn't stop taking off

Hi, my problem is that after I send a takeoff message to my drone (in gazebo) it doesn't stop taking off. It keeps moving upwards until I publish to land topic. I would like it to hover in place or at ...
user avatar
0 votes
1 answer
4 views

How to extract image of bebop camera to my computer

I'm trying to processing images obtained of bebop 1 camera from my computer, but I can not access the images. Can you help me ? I'm using the autonomy_bebop driver but the documentation does not show ...
user avatar
0 votes
1 answer
12 views

Getting started in the world of drone programming

Hey guys, I'am new in this site but i think i will pretty active in the next few months! My idea is program a drone so that it follows objects alone. I have some programming experience but i don't ...
user avatar
0 votes
1 answer
3 views

catkin_make is not building my bitbucket based ros packages

Background I have an existing project that I want to migrate to a different computer. I started building a project on my Raspberry Pi and then put the project up on github. The current name of the ...
user avatar
0 votes
1 answer
2 views

How to control ardrone in tum_simulator with command line?

I've installed tum_simulator for ros indigo and am having some troubles controlling the drone. Ultimately I want to control the drone from a python program, so for now I would like to control it via ...
user avatar