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Questions tagged [flight-controller]

The electronic component responsible for controlling a drone or model aircraft based on inputs from the receiver and outside forces acting upon the drone or model aircraft.

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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
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Can I use an RX6R's PWM and SBus outputs simultaneously?

I'm looking at options to build a pan/tilt system for FPV. The FC that I have available has only 4 servo outputs, and the airplane has 3 servos. Given this, I can't run the pan and tilt through the FC....
MD88Fan's user avatar
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Powering the PixHawk with USB on the "Power” port

I was wondering if it is possible to power a pixhawk with an USB cable (power from a powerbank) via its "Power" port. Something like a DF13 to USB cable, maybe with a DIY cable. I just need ...
capocchione's user avatar
4 votes
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DSM from Spektrum Reciever

I am working with a Pixhawk 4 and a Spektrum AR620 receiver. The receiver has a 3x7 grid of pins labelled (-, +, S), and (Batt, 1-6). The reciever says it is a DSM2/DSMX receiver, and I want to ...
figbar's user avatar
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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
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Is there an alternative way to program an ESC besides using the firmware?

I am currently trying to build a drone that has 8 motors (and thus 2 4-in-1 ESCs). The ESC model that I am currently using is the Holybro Tekko32 F4. I am also using a pixhawk as my flight controller. ...
connrb's user avatar
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BLHELI32 DShot600 or DShot150 is not activated in my ESCs from my code written in c c++ in testing with 3 different ESC

My question is more related to inner working of ESC than coding. Particularly how to activate a particular protocol like DShot600 or Dshot150. Assuming a generic BLHELI ESC has all these protocols. I ...
ZAK's user avatar
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How can I read the recording status of a Runcam Split 4 through UART?

I am working on a project where I need to interface with a Runcam Split 4 using its UART protocol. You can find the protocol documentation here I am able to get info about the device features through ...
Sagar Patil's user avatar
3 votes
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93 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
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Dji mavic air 2 "remote controller not connected" when trying to connect to aircraft

So i just updated my drone to the new firmware and when i tried to start up my drone i kept getting a message saying that the remote controller isn't connected. Both batteries are full and i tried a ...
jusnice's user avatar
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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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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
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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
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36 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
1 vote
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25 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
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7 views

what are the typical speed variations of the propellers of large drone

On a large drone like the DJI Agras t40, when in hovering mode, what are the typical speed ranges of the motors? How much does it vary when taking off? If someone can explain how to know the answer, ...
alainsanguinetti's user avatar
1 vote
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56 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
1 answer
154 views

Can be ESC connected to battery directly if PDB has not enough power?

I want to use FC Matek F405-TE http://www.mateksys.com/?portfolio=f405-te#tab-id-4 but it's PDB allow only 35A of ESC. I want to use 50-60A ESCs (motors are 40A each) with this controller. Can I ...
Robotex's user avatar
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How to use odometry provided by external Raspberry Pi device on Matek F405-WMN with Ardupilot?

I build device based on raspberry pi that calculates odometry for navigation without GPS. Now I want to test it in real conditions on drone. How can I do it in Ardupilot? RPi calculates current ...
Robotex's user avatar
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how to replicate motor signal from flight controller among multiple motors?

i would like to build a tailsitter and fly it with a flight controller such as ardupilot. ardupilot seems to support single/dual airplane motor configurations, or standard copter rotor layouts. ...
stuart's user avatar
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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
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172 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
372 views

Sourcing Parts for an Air:Bit Micro:Bit Drone

I am interested in the makekit air:bit drone as a first build, since I have a small 3d printer and already own 2 micro:bits. I am sourcing parts and noticed it has a custom controller board by makekit ...
David West's user avatar
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9 views

FC shows no controls while ELRS binded and telemetry ok?

for days I try to get my first expresslrs setup working, but fail. The build is a DarwinFPV Johnny 5" ARF quad and a Happymodel 868MHz TX / RX setup. The MATEKF405 based stack has unfortunately ...
MaM's user avatar
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Motor phase loss due to fc or esc?

When I plug DC input on esc, the fc won’t boot up, and the 5v output on board is gone. I can hear a clear sound different from which one is losing phase, and also I tested the resistance of each phase ...
Pencil Core's user avatar
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18 views

Drones location Beacons over 2.4GHz, flight ID regulation

Two Questions: First one: Does the general use drones (like DJI products) are mandatory regulated to transmit its location & control's location or Drone ID as beacon over Wi-Fi, BLE or SDR link? ...
Ashraf Almubarak's user avatar
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15 views

confusing ESC Sound as soon as i move the sticks on transmitter

there is this confusing sound which pops out of the esc as soon as i move the sticks on the transmitter. This never happened before. Normally when i plug in my battery there appears a sound but this ...
dontoronto's user avatar
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Is it possible to connect security IP camera by wired connection to drone's flight controller and transmit this video by VTX?

I'm seeking for camera that I can use on gimball of my selfmade drone. This variant https://vi.aliexpress.com/item/1005003252272933.html looks as ideal solution but I'm not sure that I can use it with ...
Robotex's user avatar
  • 187
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
296 views

Betaflight and Mamba F405 mk2: no gyro after flashing the FC

I flashed my Mamba F405 into latest firmware by Betaflight Configurator and gyro is not working after this. Everything was OK on the dafault firmware but now it don't work on any. How to fix it? Did ...
Robotex's user avatar
  • 187
0 votes
1 answer
72 views

How much current can float through all pads of the PDB (Power distribution board)?

I want to buy the „PDB-HEX, 12S“ Power Distribution Board. Are the current values of PDB/current sense resistor and ESC power pads meant for the summarized current of all motors or for each Motor? Why ...
dontoronto's user avatar
0 votes
1 answer
376 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
587 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
-1 votes
0 answers
12 views

Arm_vibration when in flight

I have recently changed the front arm on my mini2 and now have a vibration when I go up and I have no idea why. Any ideas welcome
Steve Hills's user avatar