Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [drone]

All related to aircrafts without a human pilot aboard.

A drone or Unmanned Aerial Vehicle (UAV), also referred to as a Remotely Piloted Aircraft (RPA), is an aircraft that doesn't have a human pilot aboard. It can be flown remotely by a human pilot or it can have some degree of autonomy ().

83 questions
10
votes
8 answers

How do people prototype circuits without getting shocked?

I am just getting into soldering, developing prototypes on perf boards and microcontrollers. The current for some can be as high as 2 A. I am trying to build a drone and the BEC for one ESC is 5 V and 3 A. This may sound stupid, but how do people…
Ahmed Anwer
  • 297
  • 2
  • 9
9
votes
3 answers

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 ms pulse corresponds with a minimum motor rotation and a 2 ms pulse with a…
PlatonInc.
  • 113
  • 2
  • 6
8
votes
4 answers

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 system, which moreover is limited to 30/24 fps and…
user52836
5
votes
2 answers

AC vs DC voltage regulator for hybrid drone

I am working on building a hybrid power source for a drone. I have a 7 HP, 2-stroke, 2 kg engine tied to a 7000 W permanent-magnet motor (1.8 kg, not sure a truck alternator could be close to that), which will generate 3-phase AC power. I hope to…
Greg Sorter
  • 69
  • 5
5
votes
4 answers

Hybrid gas electric drone

I have a nitro engine that’s idling at 1600 RPM. As the title says , I also have a BLDC coupled directly to the nitro engine working as a generator. That generator is capable of producing 3.5kW of power. Here’s the diagram: So , generator is…
DevOsource
  • 73
  • 5
5
votes
2 answers

Can high voltage power lines EM provide power for drones?

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 be used for a guide to travel along by sensing…
user103579
4
votes
3 answers

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, how to compare the system efficiency difference…
David Lin
  • 91
  • 1
  • 8
3
votes
2 answers

Would it be safe to exceed a battery's C rating for short bursts?

I'm currently building an autonomous drone as an experimental project, because my high school classes are getting quite boring. I've already ordered all the parts, but upon further inspection of the 18650 cells I chose, it seems as though the C…
Eryk Halicki
  • 41
  • 3
3
votes
4 answers

PID controller slowly oscillates out of control

I am trying to tune PID controllers for my drone. There are 3 controllers, one each for Pitch, Yaw and Roll. I have gotten Yaw tuned to a reasonable amount and I am assuming the values for Kp, Ki and Kd are pretty much the same for pitch and…
Plasmabot
  • 39
  • 4
3
votes
3 answers

Stabilize voltage input for Arduino nano on a drone

I am doing a small drone project, and the 8V battery provides power to both the motors and the Arduino Nano. I expect a lot of noise from the motors, however I assume that the Arduino Nano power supply should be quite stable. Is it recommanded to…
Romain F
  • 133
  • 7
3
votes
1 answer

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 able to protect its interior from external…
Matteo Monti
  • 141
  • 1
3
votes
2 answers

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 to minimize potential errors. I put the prototype…
John
  • 213
  • 3
  • 12
2
votes
1 answer

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 motors and electronics. Is there a way to hack this…
StefanS
  • 123
  • 6
2
votes
3 answers

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 + Pressure Sensor using EKF to develop AHRS-INS for my…
Dark Sorrow
  • 121
  • 6
2
votes
1 answer

What is this component in my drone?

I am disassembling a drone for a project. I found this silver boxy component on a side circuit board that connects to the main circuit board on one side, and to the camera of the drone on the other side. It has a small black thing sticking out of…
Rachel Jarvi
  • 31
  • 5
1
2 3 4 5 6