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Questions tagged [drone]

All related to aircrafts without a human pilot aboard.

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31 views

Drone Ground Control Station Switchable Power Supply

My drone ground control station will be able to run off of a 12v power supply, or a 12v car battery. I want to make it so that if the power supply is plugged in and providing power to the load while ...
0
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1answer
65 views

Signal loss failsafe for a cheap drone using 433 MHz tx/rx pair

I bought a cheap drone to get into flying quadcopters and it seems it has only one big issue at that price, which is a very long failsafe time of 20 seconds, i.e. if the remote signal is lost, the ...
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1answer
38 views

Brushless Motors kv rating and testing methods/procedures

I’m very interested in testing Brushless motors and Prop sizes. I have been involved with ASTM ASHTO and other testing methods. What procedures/standards are used for testing brushless motors for ...
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1answer
67 views

Drone's Remote control not powering on! [closed]

I am using bayangtoys X16 GPS drone. I managed to solder the "alfa APA-M04 7 dBi gain RP-SMA directional panel antenna Wi-Fi" on the board, and it was working absolutely fine. Until, I put hot glue on ...
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0answers
39 views

BLDC power consumption for drones

From what I understood, the way ESC controls BLDC motors is by outputting a fraction of the total battery voltage through PWM. The output signal is a trapezoidal waveform for the 3 phases with peak ...
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0answers
31 views

Take account of motors and ESC peculiarities to sync their speed

I'm trying to synchronize 4 brushless motors' speeds to, eventually, fly a drone. I chose every electronic component and it's starting to look like something. I control my motors with the pigpio ...
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0answers
83 views

Beeper for lost FPV drone

I am not an expert in electronics, just the very basics so please bear with me. I am trying to create beeper alarm for my FPV drone that will activate when it crashes or no movement for certain ...
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0answers
75 views

Please help me to identify this chip (Cheerson CX-10SE)

Can someone help me identifying one of these chips? They are from a nano drone called Cheerson CX-10SE. It is possible to control the older CX-10 with a Multiprotocol Module and a decent Transmitter....
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3answers
1k views

Why isn't the ESP32 used for quadcopter flight control? [closed]

I'm looking for a quadcopter microcontroller to use as a flight controller and am comparing a couple of different ones. Went on this website to see what current boards are using: http://www....
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2answers
73 views

Wire gauge on Drones different?

How is it a 12 volt 40 amp wire in a car has to be approximately 16mm thick but a drone can use 3.5mm thick cable for 12 volt 120 amps. What is the difference? They both have the same amount of power?...
-1
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1answer
30 views

How to masure maximum esc capacity

I have a electronic speed controller(esc). I bought it from local store, so i don't know what is the capacity (maximum current capacity) how to find it? Plz guide me.
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1answer
52 views

Li-Ion vs Li-Poly For Quads

Instead of using a $25 Li-Poly battery with a $10 charger, I was going to use one of these- https://hackaday.io/project/46436-3-cell-rc-battery-pack-made-with-18650-batteries What I was wondering Is ...
7
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3answers
1k views

Why do most FPV 5.8 GHz video transmitters use PAL or NTSC?

I am not much into the details of video transmission in general. However, I wonder since most displays and electronics are digital, why have suppliers for FPV equipment chosen an analog transmission ...
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2answers
375 views

Broke my first soldering iron after 5 minutes of using it [closed]

I started getting interested in drones recently and I bought a soldering iron last week on Amazon.co.uk After using it for 5 minutes to try pre-tin some copper wires, the solder was unable to retain ...
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0answers
43 views

Syma X5(C) PCB v6 camera signal trace?

I am trying to diagnose why my quadcopter doesn't send a signal for the camera to start the recording and would appreciate if someone who maybe has a spare Syma X5/X5C PCB v6 outside of a drone could ...
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2answers
2k views

How to design drone power tether system? (high power with ultra light cable)

There are drones that are powered with power tether from the ground station, and such drones can be airborne 24/7, not only 20 minutes when using batteries. I'm very interested to reverse-engineer ...
1
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1answer
36 views

How much energy do Li-Ions/Li-Pos have below 3.2V threshold?

How much energy does a battery still have when a protection chip disconnects it? I know that such discharging kills the battery, but in some cases it would be useful. For example, in drones: when you ...
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1answer
264 views

Drone gyroscope placement

I'm building a drone with an mpu6050. Does the placement of the mpu influence sensor data? I mean, if I rotate the sensor properly so that all axes point in proper directions, then will it matter if ...
-1
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2answers
195 views

RF reciever to detect unknown drone RC links [closed]

I am currently developing anti drone system as a project. Therefore,I am in need to make a RF reciever/Sensor , which can detect RC links(Drone-controller RC link) at multiple frequencies(488 MHz/2....
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1answer
156 views

How can a drone take down a high-tension power line? [closed]

This news article -- in which a drone reportedly took down the power grid in Mountain View CA -- caught my eye: Thursday night power outage the result of a drone crash Despite the compelling photo ...
0
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2answers
286 views

how can i make drone fly in same location? (not go left, right, forward, back)

I made quad drone that use PID control to fly and drone fly well. I set the PID values, and the drone always have difference force, so drone always go left or right or forward or back. It can't fly in ...
-1
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1answer
81 views

Nrf24l01 with receiver

I have one of these JJRC JJ - 1000 / 1000A H21 Tramsmitter 2.4G 6CH http://s.aliexpress.com/e6FVFzI3. Firstly I'm new to this :) sorry if a wrong question. I want to make a receiver that can ...
3
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2answers
754 views

Can high voltage power lines EM provide power for drones? [closed]

How is the EM field that surrounds high voltage power converted to produce a current through a wire? How much electricity can be produced without coming in contact with the wire? Could the EM field ...
-5
votes
1answer
146 views

Atmega328 Controller schematics

I'm a beginner at electronics. I'm doing a quadcopter controller and for it I use two L293D, one Atmega328 and a MX05-V 433MHz receiver. For power supply I use a 5V battery for the MCU and receiver, ...
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2answers
1k views

Wiring battery and solar panel to drone to extend flight time - schematic help

for one of my projects I'm trying to create a solar assisted drone. So far this is my schematic: So with the battery itself connected to the flight control board, the drone runs for about 6 ...
0
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1answer
71 views

Drones power distribution

I'm trying to build my own quadcopter and I plan to design my own flight controller / mother board. Now my question is, how do drones, such as the DJI phantom, reduce a high voltage with high current, ...
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0answers
68 views

Right ground connection between different blocks

Which is the right way of ground connection? Is it necessary to separately connect grounds between different blocks, without touching other grounds? Something like ground PCB trace going through ...
2
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3answers
376 views

Finding true north in UAVs

In my application, I need to find true north direction, for reference purpose. I am having a GPS enabled drone. I have searched over Internet and found that moving in the north direction while keeping ...
0
votes
1answer
176 views

Can I hook 5v lipo batteries together to run an electric scooter? [closed]

I have this scooter: http://www.monstermotorscooter.com/e-500.html It takes those big batteries all the scooters take. I was looking at these charger packs that have a 5v lipo battery in them: http:...
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2answers
3k views

Can hard drive stepper motor can be used for making drones? [closed]

I have some useful hard drive stepper motor can it be used for making drone??
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1answer
333 views

Equivalent battery

I bought a drone with a battery and i would like to buy a second one. Maybe a better one if possible. I have a charger with wrote : Li-PO: 7.4V And the battery:...
0
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1answer
399 views

Quadcopter balance with MPU-6050

It is not uncommon to see people asking about how to balance a quadricopter using MPU-6050. It's also common to see people answering that a PID controller is needed. However, people doesn't say how. ...
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3answers
2k views

Efficiency comparison between six step and FOC for a given motor

For a given PMSM motor with sinusoidal back-EMF, it can be driven by either six-step (as in drone applications) or by FOC (as in servo control). However, for a given motor and given DC link voltage, ...
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1answer
168 views

Why is GPS module acting strange?

I am working on a Arduino based quadcopter. The Arduino being used is a Blend Micro. Not shown in the following diagram are 4 infrared sensors, 1 ultrasonic sensor and a 9 axis accelerometer. The ...
0
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1answer
504 views

DC motors not spinning at same RPM?

I'm attempting to make a quadcopter using an Arduino board (Blend Micro). I've wired everything up as such: When I run the following code just to test if everything is working, the motors do not spin ...
0
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1answer
132 views

AR Parrot navigation board pinout

Does anyone know which pins do what on the AR Parrots navigation board?
0
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1answer
74 views

Re-attaching A Cable To A Circuitboard [closed]

I have a drone, but one of the cables connecting the battery to the circuit detached and I took it apart so I could have better acces to the circuit board. I know where the cable goes but my problem ...
1
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0answers
55 views

tracking multiple object locations

I have a requirement in which I want to track 10+ robots in a field (or hanger), the robots are small. My first thought would be to use a drone to act as a collector, monitoring the position of each ...
0
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1answer
181 views

Brushless motor not turning

I'am trying to build a drone. Therefore I bought some brushless DC motors This is the only specs I have for the motors : ...
7
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3answers
2k views

Why do RC applications use such a small PWM duty cycle?

I know that RC applications, such as a drone, use PWM signals to drive the motors. This PWM signal is mostly 50 Hz (0.02 s). The pulse itself varies from 1 ms to 2 ms. So a 1 ...
1
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1answer
618 views

Electronic hit detection

I'm building various r/c vehicles like warplanes, tanks, auto-turrets, etc. and I want to fit some of them with some kind of a weapon. I've decided an air soft gun is a good choice. So, mounting and ...
1
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1answer
80 views

How to determine FET switch specifications

I am working on a DIY drone, and I (preferably) need to be able to disconnect my ESCs from the battery via the transmitter (a Raspberry Pi). After looking for solutions for a while, I concluded FET ...
3
votes
1answer
679 views

Protect drone from lightning

I am designing a dirigible, robotic drone. It is basically a polyurethane airship, approx 3.6 m length and 2.1 m diameter. I am worried about lightnings: as far as I know, a Faraday Cage should be ...
2
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2answers
854 views

GPS and Barometer assisted flight on a mountain

This question is regarding a drone and its GPS/Barometer sensor and may not fit well in this community and if that's the case, please advise if I should move it elsewhere. So. I have built a DJI F550 ...
3
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2answers
683 views

Quad copter - from PID values to motor power

I am struggling with a completely self built/written quad copter I am working on. I am working on the PID controller for balance, right now just with a P value and it only reacts on ROLL and PITCH ...
2
votes
1answer
386 views

Using a low discharge accumulator to power a drone

I'm trying to figure out if there is a way to use a Lithium accumulator to power a drone. Because of the maximum recommended continuous current of the battery, which is too low, I can't drive my ...