Questions tagged [quad-copter]

This should be used when asking any question about quadcopters.

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71 views

Do I really need motor drivers for a quadcopter? [duplicate]

I am planning to build a quadcopter, so I searched about motor drivers, then I thought "Do I really need a motor driver?", I mean the only thing I want to control is the motors' speeds, so won't ...
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1answer
79 views

Using a battery as a voltage source in a DC DC converter to supply a second battery?

I was wondering if I could use a battery as Vin to a DC DC converter to charge another battery. Example: Using a Li Ion battery pack and having it go through the DC to DC converter to charge a LiPo ...
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1answer
46 views

Quadcopter RX TX questions [closed]

I'm working on a quadcopter and have some questions about the receiver and transmitter. I'm going to be milling the boards myself and wanted to know what would be a good carrier frequency to use. I ...
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2answers
94 views

Can you discharge a 3s LiPo battery from both its main plug and it’s balance plug?

So I’m building a quadcopter, and I want to be able to use the same battery to power both the escs and the flight controller. However, the escs are connected to the PDB which is connected to the ...
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0answers
156 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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1answer
98 views

How can I find the transfer function of a quadcopter's motor? [duplicate]

I want a model of a quadcopter and, thus, I need the transfer function of the motor. Any suggestions on how to do it will be very helpful for me. Thanks.
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1answer
861 views

Output of Brushless ESC for controlling Brushless Motor

Suppose, I have 40A ESC and Brushless Motor with max current capacity of 30A. I am using Receiver for controlling Motor speed and Arduino as controller. Receiver sends 1ms to 2ms pulse every 20ms. ...
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1answer
99 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 ...
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2answers
174 views

Trigger digital interrupt on negative voltage

For a little project of mine (FPV OSD for Quadcopter Camera) I need to detect every time the signal voltage goes negative. The Signal I get is NTSC. Here each line sync is marked by the voltage going ...
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1answer
158 views

Identifying the bottleneck component in a Quadcopter build [Jerking motors] [closed]

I started making my first ever quadcopter last week, I didn't really have any idea about the components to use beforehand and I ordered somewhat randomly after reading up a little bit about the ...
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1answer
347 views

How to solder through-holes for quadcopter boards?

Its a flight controller for multicopters. Should i stick the wires from the top or bottom, and should i solder the top side or bottom side? I searched on youtube, but there is no definitive way to do ...
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2answers
87 views

Identifying a BLDC and its characteristics

I have some motors to be used in copters, can anyone tell me: a) if they are BLDC b) how could I find what current they would draw and their power ratings? c) what ESC should I use for it
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3answers
951 views

Quadcopter Balancing with PID algorithm

I am doing a project on self balancing quadcopter with Autonomous control. I am using Arduino Mega 2560 and MPU6050. I have obtained the roll and pitch angles from MPU6050 without the help of DMP and ...
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2answers
179 views

A constant 5V buffer circuit

The flight controller for a quad needs constant 5V supply. But since I have a battery protection circuit, during the switch between the primary and the secondary battery the power supply goes low for ...
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1answer
185 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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1answer
393 views

small brushed motors thrust

I built a quadcopter. It had a very low total thrust/weight ratio, and after I added some components it doesn't fly any more, so I want to change its motors and propellers in order to increase thrust. ...
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1answer
146 views

Quadrotor flight controller and actuator dynamics [closed]

Do off the shelf flight controllers for quadrotors, such as pixhawk or cc3d, take into account BLDC actuator dynamics? For example you can design a controller to compute propeller rates, and then ...
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2answers
99 views

microcontroller current supply - noise minimisation

I'm building an Arduino-based quadcopter. I already built a partially working prototype and now I'm preparing the second version, which will probably be the definitive one. Instead of the the whole ...
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3answers
831 views

4 channel software PWM using Atmega16 for controlling 4 ESCs for brushless DC motors

I am trying to implement software implemented PWM for controlling 4 ESCs using an atmega 16 microcontroller. To achieve that I am sequentially generating the pulses for each ESC one by one in every ...
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2answers
5k views

Brushless motor dynamics (BLDC transfer function)?

I am building a quadrotor and want get a reasonable estimate of the dynamics (voltage to rpm transfer function) of the motors. I am wondering: 1) Is the transfer function for a typical BLDC 1st or ...
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2answers
904 views

Speed Control of Brushless Motor [duplicate]

I am working on a project(quad copter) which includes speed control of a brushless motor with raspberry pi. To control the speed of the motor, I will use PID controller, however I could not find a ...
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2answers
3k views

Do i really need two grounds

I'm a quadcopter FPV addict, and I'm building a new one. As pointed out i will first explain some acronyms of the rc world PDB (Power distribution board) CCD (Type of camera sensor, cmos ccd... not ...
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1answer
593 views

What is this flat pin battery connector on my quadrocopter called?

Has somebody seen this type of connector before and can tell me what it is called? It has flat pins, a 2 mm pitch, and "wings" on the side to prevent reversing it. Copious amounts of searching the ...
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1answer
458 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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2answers
605 views

Battery voltage drops when connected to a motor

I was recently working on a quadcopter so I bought a pair of coreless DC motor. My intention was to use an Arduino (DIP chip) to control the speed of the DC motor (rated 3.7 V) through a transistor. ...
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3answers
3k views

MPU-6050 angle readings under mechanical vibrations

I'm in process of making a quadcopter. At this point I encountered a problem with MPU-6050 angle calculation. When quadcopter is stationary with motors in off state and I'm tilting it, angle readings ...
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1answer
201 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 ...
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1answer
110 views

Voltage to 4 motors inconsistent [duplicate]

Tested my quadcopters control values full power. 3.7V at 600mAh from it's lithium battery with each DC motor having virtually no resistance. 2 or even 1 ohm, so as you can imagine, they pulled just as ...
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2answers
41k views

ESC motor and battery matching [closed]

How can you tell if an ESC, brushless motor and Li-Po battery will work together. Specifically, I have a A2212 Outrunner Brushless Motor KV2200, 30A Brushless Speed Controller ESC and I am looking for ...
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1answer
1k views

Balancing quadcopter using mpu6050 [closed]

I am on a project which nearly completed. But what remains is balancing. My project is making a quadcopter. All the programing and hardware stuff is completed. But when i fly it, it doesnt goes up, it ...
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1answer
299 views

How would you dampen this little quadcopter?

Well, I made a little quad from scratch. From scratch as in from PCB design. After assembling, testing, some coding, it turns out my accelerometers get WAY TOO MUCH vibrations and I can't detect ...
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2answers
3k views

Is it normal for a transistor running a motor to be very hot?

I've researched for a few hours but I'm still concerned. I'm building a very low budget quadcopter (think toothpicks) and as I've seen on this site, a D10N05 mosfet would do the job. I've visited 3 ...
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1answer
955 views

Controlling an ESC for Brushless Motors with an RPi [closed]

Originally posted on Robotics, but guess it's not active enough. I'm looking to build a new (first) quadcopter without the conventional flight controller and radio, with an onboard RPi and applying ...
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1answer
527 views

Guidance & Info about Quadcopter Project [closed]

I'm new in forum and since I made some research the past days I'd like to get some guidance about constructing & programming a Quadcopter from scratch since I'm completely new on a project like ...
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1answer
1k views

Long-range RF comm with decent data rate [closed]

I'm building a quadcopter powered with Arduino. For testing purposes, I'm currently using bluetooth. In the future, however, I would like to have some form of fairly long range communication that also ...
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2answers
1k views

How to run ATmega328P-PU using 3.7v Lipo 600mAh?

I want to run bare ATmega328P-PU using 3.7v 600mAh Lipo Battery. The Lipo is used to run Nano Quadcopter. The discharge rate is 20C. My Question is: 1. Will connecting Lipo to my atmega directly fry ...
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2answers
6k views

How to run Small Brushed Motors for Quadcopter with bare Atmega328 microcontroller?

I am trying to make a Nano Quadcopter using my Atmega328 microcontroller powered by a 3.7v 600mAh Lipo battery. I am using very Small Brushed Motors. If I directly connect motors to PWM pin of ...
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1answer
182 views

Amateur designing a quadcopter: is it possible to use Fizzly for remote control?

I am a total amateur, so forgive me if my question is naive. I am starting to design my quadcopter, and I was wondering if it would be possible to control it via bluetooth using Fizzly. It would be ...
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2answers
312 views

Components needed to determine position in 3 dimensions?

I'm trying to make a quadcopter using an arduino as a base. I've read on some physics involving determining pitch, yaw and roll and it seems like I'll need a gyroscope and a accelerometer. However, it'...
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1answer
969 views

Powering Raspberry-pi using ESC

Currently I am building a quadcopter with Raspberry Pi and I have four 20A Tunigy Electronic Speed Controller (ESC). I was wondering about could I use ESC's red wire to power my Raspberry-Pi? (tying 4 ...
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2answers
730 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 ...