Questions tagged [quadcopters]

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

Filter by
Sorted by
Tagged with
1 vote
0 answers
7 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 ...
1 vote
0 answers
11 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 ...
1 vote
1 answer
39 views

Do mounting motors at different height each other has any impact on performances?

Multirotor motors are typically mounted on same height. I'm wondering what should I expect if they are mounted at different eights each other. Model will work exactly in the same way as if they are on ...
  • 195
2 votes
1 answer
31 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 ...
  • 195
0 votes
1 answer
59 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 ...
2 votes
1 answer
29 views

quadcopter specification

https://www.droneassemble.com/product/quadcopter-drone-90-minutes-endurance/ This quadcopter offers a 90-minute flight time on a 14S-14000mah Li-ion battery. The propellers being used have a 22-inch x ...
  • 61
2 votes
1 answer
100 views

Is this quadcopter specification realistic in terms of endurance?

According to the specifications, this quad-copter offers a 90-minute flight time on a 14S-14000mah Li-ion battery. The propellers being used have a 22-inch diameter and have 8-inch blades and the ...
  • 61
2 votes
0 answers
21 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 ...
0 votes
0 answers
82 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: ...
2 votes
1 answer
53 views

Pro and cons of each quadcopter type of rotor arrangement

To design a quadcopter there are 4 main types you can decide to implement What are the advantages and disadvantages of each of these types?
  • 195
1 vote
2 answers
85 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 ...
  • 195
0 votes
0 answers
24 views

How do those cheap drone camera apps work?

I have a cheap drone, and I was wondering how the inner software works. Mine works like any other cheap drone camera/ufo apps work (Connecting to the drone's wifi and you launch the app when you do ...
1 vote
0 answers
32 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 ...
4 votes
0 answers
36 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 ...
  • 191
3 votes
1 answer
53 views

(Beginner) I have a Radiolink Mini OSD with a not so clear schematic. How do I know if it can handle the input voltage needed to power my VTX?

My VTX and FPV camera can both handle my battery voltage (6V-36V input for the VTX and 4V-25V input for the camera). My mini OSD, unfortunately, only has an input voltage of 4v-6v and an operating ...
  • 43
0 votes
0 answers
32 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 ...
0 votes
0 answers
37 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 ...
2 votes
2 answers
98 views

Which setup for tilting rotor quadcopter?

I'd like to build a quadcopter with rotors that can tilt to increase the drone's flexibility. So far, I have only used a KK 2.1 board as a flight controller which doesn't really have this capability ...
3 votes
1 answer
73 views

Help getting this flight controller to work with this receiever

I am working on building a drone. I have the DJI NAZA M LITE flight controller, and this receiver. The pinout for the battery and ESCS is pretty clear, but I'm not sure how I should go about ...
  • 131
2 votes
1 answer
67 views

Drone Suggestion Model - Linux Based

I need to buy a drone like the 3DR Solo that can allow me to program it and work with different features. I mean, I would like to have a drone where I can access towards SSH, I can deploy C scripts (i....
  • 121
3 votes
1 answer
91 views

Can I use a MJX bugs 5w battery and/or charger for the MJX Bugs 5w 4k (upgraded version)?

I am wondering if I can use the MJX bugs 5w battery for its upgraded version (MJX bugs 5w 4k) as it seems they both are the same dimensions, so it can slide into the drone. Also, I am wondering if I ...
1 vote
1 answer
83 views

Connecting 2 Pixhawks to 1 Raspberry Pi

I want to connect my Raspberry pi 4 to two Pixhawks such that when I'm using one other will be in sleep mode. One way of doing it is by assigning address to an individual and then switching. But I'm ...
2 votes
1 answer
52 views

Do I need anything else for this drone build?

So far, I have these parts as all I need for a drone build. Is there anything else that I need or should have? Flight controller: DJI Naza-M Lite TX/RX: FS-i6 Drone body: F450 Motors: 2212 920kv ...
  • 303
3 votes
3 answers
237 views

Could using a 2.4GHz controller frequency interfere with an onboard computer trying to access 2.4GHz WiFi networks?

My situation is this: I will be building a quadcopter drone (and later a hexcopter) that will most likely use 2.4GHz RC with a Pixhawk. I will also have a computer onboard (Raspberry Pi, either 4B or ...
3 votes
1 answer
81 views

DJI Mavic Mini Specs

There are some specifications I was wondering about the DJI Mavic Mini. First of all, is there a minimum or maximum temperature the drone can operate at? What is the capacity and C rating on the ...
  • 303
2 votes
0 answers
49 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
  • 381
4 votes
1 answer
74 views

Home made simple drone- need some directions

I made this small foam board frame. I attached 4 motors after taking care that diagonally opposite motors rotate in same direction and adjacent ones in opposite direction. I ensure I wired the ...
  • 381
5 votes
1 answer
66 views

What drone or drone kit allows long range {SD FPV and payload data forwarding}

I am looking for a drone which is able to: maintain an RF link between 5-10km from the receiver get easily modified to carry an external payload (assume another IMU+GPS) and transmit the payload data ...
4 votes
2 answers
94 views

Lift off without receiver

Can I make a small drone frame achieve lift using 4 coreless 3.7 v motors of 55000 rpm, 3.7 v lipo batteries having 40c without a receiver and remote. Motors are all alike. The propellers I have are ...
  • 381
5 votes
1 answer
120 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 ...
5 votes
2 answers
288 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 ...
4 votes
1 answer
69 views

Is my drone battery too large?

I'm new to the drone game. I'm building an Arducopter S500,(2015) with 2212 KV920 max 1200 gram, brushless motors, 10/45 blades, SimonK ESC's, Lipo 5200 11.1V battery, and GPS 2.8. My controller is ...
2 votes
2 answers
242 views

Why doesn't my GPS get any satellites?

I got a new GPS for my Matek f405, and after I set it up and got betaflight to recognize it, I can't get any satellites. It's a BEITIAN BN-220T.
  • 151
4 votes
1 answer
367 views

ArduCopter motor spins at full throttle when armed

When I arm the drone the motors start rotating at some throttle percentage may be (7%) and the drone will automatically disarm after 14sec and again the process repeats after I arm the drone. After ...
3 votes
1 answer
49 views

Quadrotor sizing

I am trying to make a quadrotor UAV (with inverted props) which has 4 circular/semi-circular attachments to help it glide for a longer distance. I have a constraint on the mass, but I don't have any ...
3 votes
0 answers
45 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 ...
3 votes
0 answers
57 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 ...
4 votes
3 answers
362 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 ...
5 votes
0 answers
444 views

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 ...
  • 225
6 votes
1 answer
122 views

Drone show and swarm robotics

I am working for my company and we are studying swarm robotics we would like to host a drone show for starting, and then implement swarm robotics (maybe with Agent Oriented Programming?) We have ...
  • 61
5 votes
1 answer
465 views

why do drone frames have spaces and holes

This may sound like a very dumb question, but I am building my first quadcopter and I just realized that some frames have these perfectly symmetrical holes/spaces. I used up all the screws on mine, so ...
6 votes
1 answer
187 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 ...
2 votes
3 answers
193 views

Is it possible to hijack a quadcopter?

Is it possible to hijack a quadcopter? Like an attacker would jam the controller's signals and send his/her own signal to controll the drone. If so, what would be the technical steps?
  • 41
7 votes
2 answers
154 views

Proper rotor fastening (Nyloc nut)

I am trying to figure out how to properly fasten my rotors on my quadcopter. I am pretty sure the nuts are Nyloc, but here is a picture for reference: I read online in many places that you should ...
  • 309
5 votes
3 answers
188 views

Why can't quadcopters handle failure of one rotor?

Ardupilot can detect (and it logs) motor output mismatch. I think detecting in flight motor failure is possible with modern firmware and flight controllers. Then if one rotor fails, why can't we have ...
6 votes
1 answer
112 views

Diy drone Digital control/communication

Is there a solution for digital drone communication through Wifi for diy fpv drones? I'm searching for a way to build a drone that have multiple cameras and communicate with my computer through wifi, ...
  • 63
6 votes
1 answer
463 views

Connecting 4 in 1 esc with power module

I have a 4 in 1 iflight esc currently connected to my motors. I am attempting to interface it with my flight controller (Pixhawk 4), which comes with a power module (https://docs.px4.io/master/en/...
  • 309
6 votes
1 answer
331 views

How to tune a Deadcat Quadcopter with 10 inch props and asymmetrical mass distribution along the roll axis with a low power to weight ratio?

I have a quadcopter with TBS discovery frame and 10inch props running on 810Kv motors on 3S. The quadcopter has an asymmetrical mass distribution since the heavy battery pack at the back causes the ...
4 votes
1 answer
65 views

Can something be mounted underneath a quadcopter rotor?

I am a bit of a beginner, so I don't fully understand the way the air flows around the rotors in a quadcopter. My question is in the title, and I am basically wondering if something can be mounted ...
  • 309
4 votes
1 answer
203 views

Can I re-flash the Hubsan fpv1 controller with built-in fpv screen?

the only radio transmitters, also called remote controllers, that embed a fpv screen, for seeing what the drone sees, near the joysticks, instead of having to get obstructed vision by goggles, that I ...
  • 123