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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5
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4answers
11k views

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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1answer
2k 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)...
2
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1answer
61 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 ...
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1answer
51 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 ...
0
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1answer
52 views

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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1answer
244 views

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 ...
5
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2answers
2k views

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 ...
3
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3answers
169 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 ...
0
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1answer
62 views

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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2answers
2k views

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 ...
0
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1answer
92 views

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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0answers
25 views

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 ...
3
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3answers
115 views

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 ...
4
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1answer
174 views

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 ...
4
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2answers
2k views

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 ...
3
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1answer
6k views

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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3answers
4k views

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.....
7
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1answer
6k views

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 ...
8
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2answers
2k views

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, ...
0
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1answer
58 views

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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3answers
153 views

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 ...
2
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3answers
523 views

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 ...
0
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1answer
44 views

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 ...
3
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1answer
194 views

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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3answers
660 views

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 ...
2
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1answer
292 views

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
2
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1answer
98 views

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 ...
4
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1answer
2k views

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 ...
2
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1answer
2k views

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 ...
0
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2answers
336 views

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 ...
3
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2answers
1k views

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. ...
9
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2answers
5k views

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 ...
3
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1answer
5k views

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 ...
2
votes
1answer
556 views

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 ...
4
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3answers
3k views

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 ...
2
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2answers
3k views

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 ...
2
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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://...
8
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1answer
2k views

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 ...
4
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1answer
771 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-...