Questions tagged [quadcopters]

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

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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 ...
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1 vote
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16 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 ...
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4 votes
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30 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 ...
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(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 ...
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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 ...
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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 ...
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1 vote
2 answers
63 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 ...
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3 votes
1 answer
66 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 ...
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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....
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3 votes
1 answer
65 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 ...
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1 vote
1 answer
70 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 ...
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2 votes
1 answer
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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 ...
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3 answers
132 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 ...
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3 votes
1 answer
74 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 ...
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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
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1 answer
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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 ...
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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 ...
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4 votes
2 answers
90 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 ...
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4 votes
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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 ...
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5 votes
2 answers
235 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 ...
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4 votes
1 answer
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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 ...
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2 votes
1 answer
112 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.
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4 votes
1 answer
256 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 ...
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3 votes
1 answer
42 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 ...
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3 votes
0 answers
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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 ...
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3 votes
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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 ...
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4 votes
3 answers
301 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 ...
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5 votes
0 answers
355 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 ...
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6 votes
1 answer
107 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 ...
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1 answer
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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 ...
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6 votes
1 answer
161 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 ...
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2 votes
3 answers
180 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?
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7 votes
2 answers
132 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 ...
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5 votes
3 answers
147 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 ...
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6 votes
1 answer
103 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, ...
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6 votes
1 answer
397 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/...
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  • 309
6 votes
1 answer
265 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 ...
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4 votes
1 answer
55 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 ...
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4 votes
1 answer
157 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 ...
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5 votes
1 answer
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AliExpress drone vs DJI Pro 2

I can buy a drone in US or Canada like the DJI Pro 2 for over 1000$. But when I search professional drones on Ali they advertise many that share many features such as 4K video, dual camera, 20minute ...
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4 votes
1 answer
219 views

How to debug a non-working Eachine E010?

I have two Eachine E010 drones. One drone (green color) stayed outside for a night with rain. I inspected the circuit board and it shows no damage: no cut cables that I could solder, nothing corroded. ...
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4 votes
1 answer
48 views

If AUW is 90 grams, will 4500Kv motors be better than 7500Kv?

I have a build that is 90 grams and runs great with 7600Kv motors. My question is, if everything stays the same and I put on 1204 4500Kv motors on it, would I get more flight time? More power or ...
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1 vote
0 answers
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BS 220 GPS NMEA - UBLOX using U-center

I have a quad with an omnibus f4 v3 flight controller an FS-ia6b receiver. I also have a bs 220 gps wired in correctly to the flight controller however it is outputting NMEA and this has many errors. ...
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7 votes
2 answers
83 views

DJI F450 ESC calibration fail

everyone. I am building a DJI F450 clone. I've got everything attached except for the propellers. The Pixhawk connects to my mission planner via USB. The remote controller is paired with the drone. ...
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5 votes
1 answer
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Accessing the video feed of a cheap FPV drone

A while ago, I bought a small and cheap WIFI FPV drone to fly in the office and at home (not outside). It's very funny (It's my first drone ever) and now I would like to access the video stream ...
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  • 151
3 votes
1 answer
73 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&...
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3 votes
1 answer
56 views

Vibrating like a jelly when takeoff

I have Kotleta 20 UAVCAN ESCs. When I trying to increase throttle, motors are vibrating like a jelly. How can I configure my ESCs via development port? What are best options for non vibrated flight? ...
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1 vote
1 answer
474 views

Is there a benefit to using multiple capacitors on FPV drones?

From what I've heard, you need at least one capacitor on the ESC of a drone so that it can smooth out the voltage spikes to prevent electrical noise and improve the longevity of the ESC. If this is ...
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5 votes
1 answer
212 views

Visual references when driving a Quad Copter through gates

I am a complete beginner, starting to learn to fly. So far I managed to control the altitude and do some basic turns, I can also do figure eights if the flags are well far from each other. I realised ...
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2 votes
2 answers
75 views

Would it be possible to inductively recharge a drone battery?

Regular drones can only fly around 15-30 minutes before the battery runs out, which is annoying. Newer smart phones use inductive loading, so it is possible to load a battery through such a field. ...
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