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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15
votes
2answers
499 views

What does it mean for SBUS to be an inverted protocol?

I've heard talk about how F4-based flight controllers can't natively support the SBUS receiver protocol without special circuitry. What does this mean and what hardware is needed to invert an inverted ...
8
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2answers
291 views

Can I configure Betaflight in the field without using a laptop?

I often find myself wanting to make adjustments to the settings on my quadcopter in the field, especially when tuning PID settings and rate profiles. I currently bring a laptop with me wherever I go ...
8
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1answer
52 views

Hover stability: PX4 vs. DJI Mavic Mini

About a year ago I started building my own drones. I've settled into Betaflight for FPV and PX4 for photography. I've never used a "real" off-the-shelf drone, being a DIY'er. Recently I saw ...
8
votes
1answer
113 views

How to visually inspect the magnitude of PID gains?

The defaults in Betaflight generally work very well, but I own and fly very different quads ranging from 2" to 6". It may easily be that there is room for little adjustments I can make with the tuning ...
7
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2answers
101 views

Difference between a 3 and 6 axis gyro

When shopping for drones, I see a 3 and 6 axis gyro available, what is the difference between the two? Does one have a advantage when flying over another?
7
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2answers
2k views

How to enter DFU mode on my flight controller?

How can I enter DFU mode on flight controllers, in particular on my CL Racing F4S flight controller? Ref.: https://cl-racing.myshopify.com/products/clracing-f4s
7
votes
2answers
130 views

What are the usual engineering considerations for a UAV current sensor?

Current sensors are a popular feature in both multicopter and fixed wing flight control stacks. Most of them are analog, i.e. convert the current into a voltage using a small-value shunt resistor (...
7
votes
1answer
164 views

what is the voltage output from the ESCs of drone motors?

the flight controller i am using is a custom one, which is a teensy 4.0 microcontroller. it cannot have more than 3.3V into its GPIO pins. I know I can use the 5V from the BEC of the ESC to power my ...
7
votes
2answers
221 views

Does the Meteor65 Acro support Spektrum RSSI?

I have a BetaFPV Meteor65 Acro with a built-in DSMX receiver. I'm wondering if the F4 1S Brushless Flight Controller V2.2 (DSMX) supports RSSI. I've seen DVR of people flying and they have an RSSI ...
7
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2answers
143 views

Drone Controller, PID Is Enough, or ODE Modeling Required?

I am planning to build a remote controlled dualcopter where I have two propellers, one on top and one on the bottom. The bottom rotor will be gimbal based for thrust vectoring. Something like this, ...
6
votes
3answers
447 views

What happens if i select the wrong number of motor poles in BetaFlight?

what kind of effect has on my gear and flights to have set a different number of motor poles that I actually have installed. for example, my motors have 14 poles but I set 12 on BetaFlight or vice-...
6
votes
1answer
436 views

Wiring a 4-in-1 ESC to an Arduino Uno

I have four brushless motors that I want to control using an Arduino Nano. I was looking at getting a 4-in-1 ESC controller similar to this one on amazon. At this point in my project, I'm more ...
6
votes
1answer
51 views

Is my flight controller dead or can I save it?

I built a new quadcopter and was able to power up the drone with no problem when I finished. However, after flashing new firmware to my receiver and forgetting to disconnect the receiver wires from ...
6
votes
1answer
53 views

Can Reinforcement Learning be used for UAV waypoint control?

I want to make a drone which can follow static and dynamic waypoints. I am a total beginner in the drone field so I can't figure out whether I should use Reinforcement Learning or other learning ...
5
votes
5answers
940 views

Drones capable of smooth plane/bird-like flight

Multirotors are small rotorcraft with flight dynamics which result in an unnatural "flight experience". Are there multirotor autopilots which would be able to simulate a more "natural&...
5
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2answers
283 views

What's the difference between F4 or F7 flight controllers?

What is the difference between the STM32F411 and the STM32F722RET6 processors in flight controllers? What are the advantages of having the F7 processor over the F4 processor?
5
votes
2answers
199 views

Can "toy" drone FC firmware be tweaked?

Can the flight controller of cheap "toy" grade quads, such as the Blade Inductrix, be programmed at all? I'd assume that even if it's possible, it wouldn't be practical. I don't have any ...
5
votes
2answers
182 views

What is the standard setting for the Ele stick in FPV mode

I've been flying quads for quite a while both line of sight and FPV. I started with Liftoff simulator FPV where I had the settings set the way that when I move the Ele stick backwards, the drone moves ...
5
votes
5answers
93 views

What are the available solutions for creating complex user-defined UAV behavior in autopilots?

Most freely available autopilot-enabled flight control hardware and firmware for hobby/consumer-grade UAVs seem to have a rather fixed feature set. There are usually varying degrees of stabilization, ...
5
votes
2answers
189 views

DIY wireless mesh network to extend drone's operational range

I have stumbled upon this question regarding technology providing longest range for rc controls and would like to ask a related one. Theoretically it should be possible to build a wireless mesh ...
5
votes
1answer
296 views

What is DSHOT in ESCs?

I've heard that modern quadcopters use a DSHOT protocol. Could you describe what it is? What's its purpose?
5
votes
1answer
363 views

4 in 1 ESC and FC won't turn on when connected together

After crashing my drone recently, my ESC and flight controller won't turn on (the power led lights up on the FC, but nothing else works either it doesn't anymore, or I was wrong before) any more when ...
5
votes
1answer
66 views

Working on a Quadcopter. Unsure if this flight controller supports an FS-IA6 receiver

I am really new to drone building and I have had some awful luck trying to figure out what is compatible with what. Here is the link to the AIO flight controller I chose to use for my build. It won't ...
5
votes
1answer
38 views

For a typical dual controller + companion computer UAS, is it normal to have UART only from controller, and USB only from companion computer?

When I'm reading the extension capability of 3DR Solo, I realise that its breakout board interface has some peculiar limitation. Here is the context of the entire 3DR Solo design: it is an open-source,...
4
votes
3answers
142 views

Are the power connections for BECs of ESCs made in parallel or series with each other?

I see the 5V power pin of BECs all are connected to the flight controller, but within the flight controller, is this registered as a 4 5V batteries in series or parallel? In series would not make ...
4
votes
1answer
508 views

What's the purpose of airmode and idle up?

What are airmode and idle up and what do they do improve my freestyle flights?
4
votes
1answer
282 views

Why don't solutions exist for a 3-axis helicopter flight controller?

So I've been searching around for a 3-axis flight controller for my 450-size helicopter. It seems that nearly every flight controller which is sold today is configured for solely the control of quad/...
4
votes
1answer
100 views

Is Naze32 capable of autopilot?

(Assuming that you have the required telemetry hardware, barometer, etc...) Are any versions of the Naze32 capable of autopilot features, such as altitude hold? How about more advanced things like ...
4
votes
1answer
41 views

What are controllers of Parrot AR drone 2?

I have a few questions about Parrot AR drone 2. Here is the official website Q1:What are the controllers for the AR drone 2? Is there a position controller (GPS), velocity controller (accelerometer), ...
4
votes
1answer
102 views

My DIY Project - My motors and voltage regulator for water pump does not work at the same time

I am working on a project to make a quadrocopter that can spray liquid material. Unfortunately, I had this problem: when I give full thrust and try to activate the water pump at the same time, the ...
4
votes
0answers
16 views

Control a servo through the flight controller PPM output and a ppm to pwm card

I have a quadcopter on which I want to connect a servo, I bought a ppm to multiple PWM converter to connect on the flight controller PPM output, but I don't find how to tell betaflight to control the ...
4
votes
0answers
36 views

Can I use a quadcopter AIO FC (or stack) to control a micro helicopter via Arducopter or iNAV?

I have found a lot of resources on building your own quadcopter(drone)...but none on micro helicopters. The only helicopter resources I have found were large model helicopters. However I want to ...
4
votes
1answer
23 views

Can you connect a mamba405-mk2 flight controller with a FrSky R-XSR receiver?

Spec for mamba405: https://ardupilot.org/plane/docs/common-mamba405-mk2.html Spec for R-XSR: https://www.frsky-rc.com/wp-content/uploads/Downloads/Manual/R-XSR/R-XSR%20ACCST%20-Manual.pdf Looking at ...
4
votes
0answers
120 views

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 ...
3
votes
2answers
536 views

Are there any alternatives to BetaFlight? [closed]

I wonder if there are any alternatives to BetaFlight. If there are any alternatives, what are their advantages and disadvantages?
3
votes
2answers
420 views

What is the point of a dual-gyro setup for a FC?

When looking for a flight controller for a drone build, I have seen some FCs with dual-gyros. What is the purpose of having two gyros on a FC? (Are there any advantages or disadvantages)
3
votes
3answers
187 views

Beeper beeps if transmitter is turned of even if it shouldn't

I have turned off all beeper sound signals in Betaflight Configurator, but the beeper still beeps if the transmitter is turned off. I thought that that shouldn't happen when RX_LOST was turned off or ...
3
votes
1answer
38 views

What is the difference between Mission Computer and Flight controller? Why can't the Mission computer and Fight controller be on same processing board

I am exploring various on-board processors. I observed in most cases, the mission processor and flight controller processor are different and are integrated as and when required. I was wondering what ...
3
votes
1answer
26 views

Pixahawk compatibility with high voltage digital servos

I am a novice RC member whom is doing a university project that uses a flight controller to actuate high voltage digital servos. It is part of a ducted fan rocket. The servos : https://hitecrcd.com/...
3
votes
1answer
60 views

Flight controller or ESCs on Eachine Viswhoop not booting properly

After last flight my Eachine Viswhoop stopped booting properly and arming (link to gfycat with sound). When connecting battery to drone I can hear FC beeping but don't get second set of "beeps&...
3
votes
1answer
348 views

Serial Communication Not working in APM 2.8

I have being trying to establish Serial Communication connection between APM 2.8 and Raspberry Pi Board. But the connection is not being recognized in the Raspberry Terminal Console. Configuration ...
3
votes
1answer
33 views

What is a filtered power pad on flight controller?

Having looked at many different flight controllers I saw that many of them have filtered power pads. What does it mean when it says filtered power?
3
votes
1answer
48 views

Installing Spektrum receiver onto AtomRC Dodo

I'm a noob who just received an Atomrc dodo, and I have a Spektrum SPM4650 receiver I need to install. The wiring diagram (below) is clear enough, but I'm new to soldering and would prefer to avoid ...
3
votes
1answer
251 views

ESC power up beeps sound twice: du-du-du...du-du-du beep-beep

Just recently, my power-up beep sounds have changed. The normal sequence is just du-du-du beep-beep for ESC power, then throttle signal, right? Now I get du-du-du, pause, du-du-du (again) beep-beep. ...
3
votes
1answer
51 views

FPV camera and beeper seems to be interfering with each other

I recently changed my VTX from the Tbs unify pro 5G8 HV to the unify pro 5G8 V3. Because of this I had to move the cameras 5v input from the VTX to the FC (The HV model has a built in regulator, and ...
3
votes
1answer
133 views

Mamba F405 gps loiter mode

I ordered a new mamba f405 a few months ago and I am curious whether it is possible to have loiter mode on Mamba f405 flight controller like one in pixhawk ?
3
votes
0answers
19 views

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 ...
3
votes
0answers
23 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 ...
3
votes
0answers
51 views

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 ...
3
votes
0answers
28 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 ...