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Questions tagged [quadcopters]

A multirotor that uses four non-coaxial motors/propellers to fly.

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Remote controll via Mavlink with iNAV 3.0?

I'm not that familiar with Mavlink, but try to find a way to controll my FC Omnibus F4 nano v5 via a serial connection to a RPI (which is itself connect to a wifi). Using mavproxy, I'm able to ...
MaM's user avatar
  • 245
4 votes
0 answers
79 views

Correct Flight Controller mixer settings for quadcopter with non-centred Centre of Gravity

I have a HobbyKing KK2.0 Flight Controller (FC) on a quadcopter. I have been trying to work out the correct mixer settings for a new H configuration I'm trying however the documentation isn't that ...
Arj's user avatar
  • 191
3 votes
0 answers
14 views

How to "convert" rotoss thrusts to Yaw/Pitch/Roll/Throttle commands

I'm trying to use Flightmare(home) simulator to create a control model using reinforcement learning. The simulator is great, but its environment accepts step command with four values of rotor thrusts ...
somers's user avatar
  • 31
3 votes
0 answers
87 views

Dshot 600 ESC is not responding to the transmitter

I'm building a drone with arducopter 2.8 (ArduCopter V3.2.1) and I'm using the DSHot 600 (BLHELI_S) Opto ESC's as my ESC and when I connect the Opto ESC to the arducopter and arducopter to the ...
Venkatesh Talacheeru's user avatar
3 votes
0 answers
94 views

I am looking for a board like the Multiwii Crius SE. It is currently discontinued and I really need an alternative that supports Multiwii firmware

Here is a link to Multiwii and it's site --> http://www.multiwii.com/ Multiwii was really popular around 2011 to 2015. Ever since, their best board, the Crius SE, has been discontinued. I am really ...
Redgar Pro's user avatar
3 votes
0 answers
67 views

What is the frame system defined for Orientations comptutation using Quaternions [Madgwick filter/ Mahony filter]?

I am working with MPU9250 and I have implemented attitude & heading reference system based on Madgwick/Mahony filter. I capture the raw data [accel, gyro, mag] and pass to the Madgwick filter in ...
TheLazy's user avatar
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3 votes
0 answers
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What are the steps to connect the Pixhawk to Auvidea J120 board using a telemetry cable?

I'm looking to get a connection between my Pixhawk and Onboard GPU using telemetry. However, it doesn't seem to be connecting for some reason. I followed the instructions given on this page - https://...
desert_ranger's user avatar
2 votes
0 answers
106 views

Why new/recommended MEMS IMU for AHRS for drones are 6-DOF instead of 9-DOF?

I'm developing an quadcopter as an DIY project. I'm in nascent stage of development. I've just finalized the design/working philosophy. I'm planning to fuse data from 9-DOF (9-Axes) IMU + GNSS + ...
Dark Sorrow's user avatar
2 votes
0 answers
45 views

Parrot AR Drone 2.0 full battery shows as empty

A friend of mine gave me a Parrot AR Drone 2 that had been lying unused for a number of years. It was in working condition when he last used it. I had also flown it then. When I got the drone, the ...
Hussain Akbar's user avatar
2 votes
1 answer
394 views

How to calculate the motor size needed from load requirements?

In quadcopter model creation is needed to choose components in order to have enough thrust ratio to grant the hovering plus some extra for movement performances, taking in account other constraints as ...
AndreaF's user avatar
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2 votes
0 answers
38 views

Custom flight mode in pixhawk flight controller

I am trying to convert a pixhawk drone into a quadrotor biplane tailsitter. Is there a way to create a transition flight mode where a motor pair will lower its RPM for a while until the drone's axis ...
Apoorv Pandey's user avatar
2 votes
0 answers
51 views

Which drone kit is this

Which drone kit is shown here: https://www.youtube.com/watch?v=QJOONKjX9xQ What are your opinions of it? R
Raster R's user avatar
  • 381
2 votes
0 answers
60 views

Multi GP gate sizes

Multi GP Gate sizes are given in square inch/ft like so: 25 sq ft (5’x5’ – 1.52m x 1.52m) - those are obviously the size requirements for a square gate. If I want to have a "Multi GP compliant&...
stylesuxx's user avatar
  • 205
1 vote
0 answers
10 views

DJI F450 Drone Kit Equivalent

I wanted to buy the DJI F450 Drone Kit, however as it is no longer produced, I want to buy an equivalent. Does anyone know any Pre-soldered drone kit like the DJI F450 that can lift a camera, jetson ...
Anay Gokhale's user avatar
1 vote
0 answers
29 views

Quadcopter configuration with front motors inverted & the rear motors upright

Hello UAV enthusiasts and experts, I am currently working on a quadcopter drone project where we are exploring a unique motor configuration. Specifically, we are considering a hybrid setup where the ...
Chirag Singla's user avatar
1 vote
0 answers
85 views

How to connect Matek H743 FC to Raspberry Pi 4

I am using INAV firmware with Matek H743 FC. I want to connect FC to Raspberry Pi and read data from lidar/optical flow and GPS sensors. Culd you please provide me with documentation ? I dont know ...
captain-yossarian from Ukraine's user avatar
1 vote
0 answers
45 views

Determining Typical Bandwidth for 2.4GHz Radio Control in Drones for FPV Camera Data Transmission

I'm working on a drone project that involves transmitting FPV (First Person View) camera data using a 2.4GHz radio control system. I'm trying to calculate the potential delay in transferring this ...
hunterlineage's user avatar
1 vote
0 answers
61 views

Drone that can send live camera footage, GPS coordinates and maybe IMU readings to a remote PC

I need to acquire a drone for my dissertation project. The main requirement is to be able to transmit camera footage to a remote PC for processing. If possible, it would also help to send GPS ...
Daniel Bancos's user avatar
1 vote
0 answers
198 views

Enabling obstacle avoidance in a cheap Chinese drone (E100 Mini Drone)

I bought the E100 Mini Drone, similar to this - and it seems the obstacle avoidance function doesn't work. I can still return it, or keep it for a refund of roughly half the price. I'd keep it, if it ...
SF.'s user avatar
  • 111
1 vote
1 answer
83 views

LiPo battery voltage keeps dropping when connected to PDB

I have an F450 quadcopter frame with the integrated Power Distribution Board. In order to use this feature, I soldered the battery (XT60) and the four ESC (Dean-T) connectors. I tested the continuity ...
Teo Protoulis's user avatar
1 vote
0 answers
43 views

FPV system with camera synchronized to IMU

I'm looking for a drone who has an IMU synchronized to a camera. Global shutter would be nice but I would even tolerate rolling shutter if it's time stamps lock to the IMU. Does a hobby priced ...
FourierFlux's user avatar
1 vote
0 answers
24 views

Effective Area estimation for drag calculation in coaxial quadrotor

I have a coaxial quadrotor with a propellor size of 34 inches & i want to calculate effective rotor area for drag calculation.what will be the area whether it is summation of both upper & ...
falcon's user avatar
  • 71
1 vote
0 answers
23 views

Location of Flight Controller in drone (PX4 specific)

I have a question for experienced users of PX4. Can the flight controller be placed anywhere in the drone, as long as it is pointing in the right direction and the calibration is made in the correct ...
Juan de Dios Flores Mendez's user avatar
1 vote
2 answers
650 views

How to maximize range with 2212 1400Kv motor and 30A ESC?

Premise, I'm not interested in speed or any type of sporty flight attitude, but only on range maximization I have 30A ESC, 2212 1400Kv motors 180W max with maximum efficiency current in the range ...
AndreaF's user avatar
  • 225
1 vote
0 answers
191 views

Control algorithms for drones

I am hobbyist trying to understand control architecture of quadcopter.Cascaded control helps rejecting any disturbances, giving a fast response. But then why are using a square root controller instead ...
Mihir Salot's user avatar
1 vote
0 answers
71 views

BS 220 GPS NMEA - UBLOX using U-center

I have a quad with an omnibus f4 v3 flight controller an FS-ia6b receiver. I also have a bs 220 gps wired in correctly to the flight controller however it is outputting NMEA and this has many errors. ...
457R03_14159's user avatar
0 votes
0 answers
7 views

motor and holybro tekko esc heating issue

I recently started building a quadcopter. I'm using a Hollybro Tekko 4-in-one ESC and Emax motors (EMAX RS2205 2300KV Brushless DC Motor for FPV Racing Drone) - Red Cap (CCW Motor Rotation) X4). In ...
Prateek Tiwari's user avatar
0 votes
0 answers
21 views

PI License Requirement?

I am considering getting into the drone search and rescue industry in the southern California area. Specifically, using thermal drones to look for lost dogs. I stumbled upon a website https://www....
Bryan's user avatar
  • 101
0 votes
0 answers
4 views

Eachine ts215 motors get hot

I bought a Eachine Wizard TS215 5' freestyle drone back in 2020 (now discontinued) that flew perfectly when I bought it. The PID tunning was already set from the factory and everything was running ...
Henrique Araujo's user avatar
0 votes
0 answers
10 views

Yaw angle estimation for quadcopters

I have built a quadcopter from scratch and I am at the stage of optimizing the roll, pitch, yaw angles estimation. To this end, I have implemented both Madgwick and Mahony AHRS filter and at the ...
Teo Protoulis's user avatar
0 votes
0 answers
38 views

In gyroscopic effect of a drone, why does body frame angular velocity equal to precession angular velocity?

In quadcopter dynamic equations of Newton-Euler formation that I have encountered in all academic publications, torque equation is like this: The cause of gyroscopic effect is from the spinning of ...
pysicsuser's user avatar
0 votes
0 answers
7 views

how to calculate the efficiency of hybrid drones?

I'm looking at this new kind of drones: https://www.xer-tech.com/drones/x8/ And I'm trying to calculate the overall efficiency of the powertrain. The numbers I'm getting don't really match up to the ...
alainsanguinetti's user avatar
0 votes
0 answers
11 views

Multiwii drone not functioning properly

I have used 1800kv motors, Arduino Uno, and Flysky FSI6 transmitter and reciever. This is the code I used for the config.h file: ...
Rathore Brothers's user avatar
0 votes
0 answers
38 views

Mathematical Model of Drones

I have recently decided to take up a small project at my University involving ML techniques and UAVs. TO get started, I have been looking for mathematical model of UAVs, but a lot of places offer a ...
Prat K.'s user avatar
0 votes
0 answers
31 views

Is it feasible to enhance Google Maps by incorporating drone imagery, similar to satellite views, for improved visualization of locations?

I've been using Google Maps to scout locations for my drone photography, and it's been incredibly helpful for planning my shots. However, I've been wondering if there's a way for me to contribute more ...
Suri Freeman's user avatar
0 votes
1 answer
27 views

transmitter not connecting in multiwii

i built a drone usiong multiwii controller and uncommented drone x and mpu6050 lines i calibrated the motors using it also but when i operate transmitter using multiwii software the software and drone ...
Rathore Brothers's user avatar
0 votes
0 answers
42 views

Why are my motors not spinning at the same time although I calibrated them?

I'm currently working on a DIY project to make my own homemade Arduino based quadcopter drone. I have built the structure and have written the program. The drone consists of 1400KV motors, SimonK 30A ...
Ishaan Manish's user avatar
0 votes
1 answer
72 views

Drone is not holding its position

I am working on a quadcopter drone, i am using s500 drone frame, pixhawk 2.4.7 flight controller, dji 2212/920 bldc motor. I am planning to use Raspi-4b to control the drone. But before that, while ...
Aaron Crt's user avatar
0 votes
1 answer
31 views

Claw using brushed ESC in conjunction with brushless ESC on Kakute H7

For a challenge, my club and I have been building a drone with a claw on the bottom. We found a good lightweight claw, but it uses an N20 Geared brushed motor. We have a brushed motor ESC(Quicrun 1625 ...
demon_of_speed's user avatar
0 votes
1 answer
158 views

Why is my drone oscillating on position hold after I move it a few meters?

I have built a 5 inch quadcopter using inav 5, mateksys f722, and M8q-5883 gps. When I enable position hold with gps, the drone is relatively stable, but when I move it a few meters forward, it will ...
tinker102's user avatar
0 votes
1 answer
401 views

Raspberry Pi 4 between flight controller and receiver

I have TBS Crossfire Micro TX, Nano RX and Raspberry Pi 4, I haven't bought a flight controller yet because I have a problem: Until the drone receives a special command from the transmitter - I ...
Mike Arkl's user avatar
0 votes
0 answers
625 views

How to add custom betaflight code to obtain data from I2C device and pass to OSD?

I successfully obtained data from my I2C device in Arduino: ...
user255936's user avatar
0 votes
0 answers
39 views

What should I do if the radio and micro receiver don't run on the same protocol?

I recently got started on FPV and I got a cheap Tyro 69 toothpick and a Flysky fs-i6 radio, but the micro receiver won't bind to the radio, should I get another micro receiver that run on ibus, or buy ...
Simon McPhee's user avatar
0 votes
0 answers
75 views

How shall I get smooth servo output from pixhawk?

I am getting improper servor output. A slight increase in throttle suddenly increases servo output of the pixhawk. This is the link to my servo output As this can be seen I get sudden jump from 1000 ...
shivank anchal's user avatar