Questions tagged [multi-rotor]
Multi-rotor is a rotorcraft with more than two rotors. Multi-rotors can be quadcopter, tricopter, octocopter, hexacopter etc.
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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 ...
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Why are Euler angles used for drones
I know this question is asked before, but the reason why was still not clear to me.
If you've a 6-DOF IMU, the gyroscope measures is degrees/s or radian/s.
Why do we want to convert the body rates to ...
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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 ...
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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 ...
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How to attach flysky receiver to racerstar all in one esc and flight controller?
I am building an fpv racing quad I encountered the following problem:
I have a Racerstar StarF4s 30A esc and flight controller combo and a Flysky 2.4ghz iA6B receiver how and where do I connect these ...
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Will a 2.4ghz controller work with a 5.8ghz video transmitter?
I’m building an fpv racing drone and I accidentally ordered a 2.4ghz controller and a 5.8ghz video transmitter. Will they work together?
I have 5.8ghz fpv goggles so I assume they will work.
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Best practices for quad-copter designing
What are the some of the best practices for placing the components (including battery, GPS, flight-controller, wires, receiver etc.) on the air-frame of an 'X' quad-copter to ensure the minimum power ...
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Why 3DR Power Module has two 5v and GND output
Why are there two 5V and GND output in 3DR Power module (https://www.instructables.com/id/Safetly-use-CLONE-APM-Power-Modules/)
(https://www.youtube.com/watch?v=M6OSp05Y5b8).
Can we power up an APM 2....
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why we need both vel and acc contribution for actual position?
I was trying to understand multiwii quadcopter code. I started with understanding GPS code. Here is a section of the code where I have doubt. Why actual position = pos + velocity contribution + ...
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Interference caused by multiple robots during task completion
Suppose there is an area to survey. If we deploy one robot it takes time T to sweep the area. Now if we deploy 2 robots, we would expect it to take time T/2. However in reality, because we are sending ...
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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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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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Multicopter: What are Euler angles used for?
I hope you can help me and this is the right forum to ask.
In the process of building and programming my own Quadcopter, I encountered the term Euler angles. I took some time to understand them and ...
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Ardupilot on Raspberry Pi
I'm making a quadcopter for the first time and want to be as low cost as possible, and when it comes to flight controllers APM is the best open-source project, and is compatible with Raspberry Pi.
My ...
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Why do the motors of my quadcopter not deliver sufficient power?
I am building a quadcopter using the tutorial The Ultimate PVC Quadcopter.
When ever I go to lift off, at full throttle, the motors spin but the quadcopter doesn't go anywhere. I have checked again ...
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In how many ways can a six propellers drone fly or rotate?
I thought it were twelve ways:
Six for each ways between two propellers
Six others for each rotation on these ways.
But according to Vijay Kumar Dean of Penn Engineering , it seems that I was wrong.....
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Need the uav to perform a circle turn
I've got a project that will require my drone to perform a circle turn while the drone is always facing the tangent of the turning curve. Similiar to a car that is performing a frictionless banked ...
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Quadcopter Charging
Our thesis is about Multicopter using two batteries wherein the first battery is used and when the power goes out, a switch is placed use to charge the first battery while the second battery is ...
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Compatibilty of my setup?
I'm building my first quadcopter, and these are the components I intend to buy:
Motor: EMAX BL2212 1400 KV Brushless Outrunner Motor around 0.9 kg thrust:
Flight Controller: Multiwii V2.5 Flight ...
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Building my first quadcopter
I am trying to build a quadcopter from scratch. I have selected few parts but I have no idea whether the quadcopter will come together and fly.
I would appreciate your feedback on whether the parts I ...
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Controlling an ESC for Brushless Motors with an RPi
I'm looking to build a new (first) quadcopter without the conventional flight controller and radio, with an onboard RPi and applying some newfound knowledge on autonomous control to improve my coding ...
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How to attach a motor to a blade?
The hole is a slightly too big for the motor's shaft. I thought about hot gluing them together.
Link to picture here
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How would i go about learning to code a flight controller?
I'm interested in quadcopters/multi-rotors and want to eventually code my own flight controller ala an APM and/or Pixhawk. I've got a little experience in programming (i.e i know about if/else/else if ...
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Unable to hover my quadcopter
I'm currently flying a f450 Quadcopter using a APM 2.6 flight controller.While i am able to get the quad off the ground and relatively steady horizontally(via the use of trims).However, i am unable to ...
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DualCopter Degree Of Freedom
I am a newbie in this drone field. I am curious to know what type of rotation and translation a dualcopter can achieve ? By rotation and translation i mean can it be able to roll, pitch and yaw like ...
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Measuring the performance and response rate of ESCs
How would i go about measuring and quantifying the performance of an ESC? I am looking to measure the response rate(in Hz) of an ESC, as well as it's performance(i.e how fast it starts and stops, as ...
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Why can't i use different ESCs together on a multirotor?
I'm working on a diy quadcopter build from scratch and have bought a 4pack ESC from Castel Creations.While i currently have my quad up and running(sort of), from what i've read on the various sources ...
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Quadcopter: Stabilization along the z-axis (for holding altitude)
I recently spent some work on my quadcopter firmware.
The model is stabilizing its attitude relatively well now.
However I noticed, that it is changing its altitude sometimes (maybe pressure changes, ...
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Will a 20amp ESC run a Turnigy 2213-980?
I'm a noobie just starting out and trying to come up what I need to build my first quadrocopter, I just wanted to run something by people with some experience before I commit to buying anything.
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Does it matter if my electronic speed controllers are close to my brushless motors?
I have built several quadcopters, hexacopters, and octacopters. Between the flight controller (I use 3DR APM2.6 or Pixhawk) and the motors I use heavy duty power wires as well as a servo-style cable ...
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Is it important to have good PI settings when we running in self-level with kk2?
I have a kk2.1.5 and I fly with the self-level on. In the kk2, there are two menus. One to set PI-settings and another with selflevel-settings. Both enable to set P-Gain and I-Gain.
Is it important ...
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Grasshopper effect on a quadcopter with kk2.1.5
We have builded a quadcopter that use the flight manager kk2.1.5 with the latest firmware. When we increase the throttle, it flight. When we keep the hand on the stick we are able to maintain it but ...
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Our quadcopter goes forward instead of hovering in place. How to correct it?
I'm trying to do a quadcopter with some friends and we have a problem. It goes forward instead of hovering in place. We made a video to explain it, you can see it here.
As you can see, the quadcopter ...
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How to know what motor/ESC/propeller combination will work for a quadcopter?
I am preparing for my first quadcopter build and need to know how to tell what motors/ESC's/propellers will work with each other. I also would like to know how to tell what the motors would be capable ...
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Can a rigid-prop quadcopter hover upside-down?
Most small quadcopters use rigid rotors with some fixed pitch.
In principle, I can imagine it might be possible for such a rigid-prop quadcopter to hover upside-down,
but that apparently requires ...
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Quadrocopter build - Do these parts look fine?
I am completely brand new to quadrocopter building. I am currently about to start building a Quad. I have done a little bit of research and was thinking of buying the following parts:
KK2.1 Hobbyking ...
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Help with PID "units" in a quadcopter control system
I'm in the process of writing my own simple quadcopter controller for experimental use, and I'm having trouble getting my head around how to convert from the degrees which my PID controller demands to ...
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Interference between 900 MHz video transmitter and 2.4 GHz control radio
I'm starting to attempt to fly FPV on my quadrotor. I am using a FrSky D8R-II 2.4 GHz frequency hopping diversity receiver (two antennas) for control and recently added a no-name 910 MHz 1.5 watt ...
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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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Prop orientation for tricopters
This question stems from previous question, where I asked why does the prop orientation matter so much for a multirotor. But on further research† I found that these reasons need not apply to a ...
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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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