cd-5-doc quadcopter batch no 30 (1).pdf

7/27/2019 cd-5-doc quadcopter batch no 30 (1).pdf

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Radio Controlled Quad copter

B.Tech PROJECT REPORT

SRIKANTH BABLU(09241A04B2)

RAKESH MALLEM(09241A0493)

SIDDHARTH SURESH (09241A0436)

ANAND KARWA(09241A0459)

DEPARTMENT OF ELECTRONICS AND

COMMUNICATION ENGINEERING

GOKARAJU RANGARAJU INSTITUTE OF

ENGINEERING AND TECHNOLOGY

(Affiliated to Jawaharlal Nehru TechnologicalUniversity)

HYDERABAD 500 090

2013


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Radio Controlled Quad copter

Project Report Submitted in Partial Fulfillment of

the Requirements for the Degree of

Bachelor of Technology

in

Electronics and Communication Engineering

By

SRIKANTH BABLU(09241A04B2)

RAKESH MALLEM(09241A0493)

SIDDHARTH SURESH (09241A0436)

ANAND KARWA(09241A0459)

DEPARTMENT OF ELECTRONICS AND

COMMUNICATION ENGINEERING

GOKARAJU RANGARAJU INSTITUTE OF

ENGINEERING AND TECHNOLOGY

(Affiliated to Jawaharlal Nehru Technological University)

HYDERABAD 500 090

2013


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Department of Electronics and Communication Engineering

Gokaraju Rangaraju Institute of Engineering and Technology(Affiliated to Jawaharlal Nehru Technological University)

Hyderabad 500 090

2013

Certificate

This is to certify that this project report entitled radio controlled quad copter by

SiddharthSuresh(09241A0436),AnandKarwa(09241A0459),Rakeshmallem(09241A0493)

,Srikanth Bablu(09241A04B2) submitted in partial fulfillment of the requirements for

the degree of Bachelor of Technology in Electronics and Communication Engineering of

the Jawaharlal Nehru Technological University, Hyderabad, during the academic year

2012-2013, is a bonafide record of work carried out under our guidance and supervision.

The results embodied in this report have not been submitted to any otherUniversity or Institution for the award of any degree or diploma.

(Guide) (External Examiner) (Head of Department)

Hima Bindu Dr.Ravi Billa

Assistant Professor


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Acknowledgements:

It is a pleasure to express thanks to Mrs.Hima Bindu for the

encouragement and guidance throughout the course of this project.

We would like to express my deep sense of gratitude and admiration to Dr.Ravi

Billa, Head Of Electronics & Communication Engineering Department .

At the outset we sincerely thank the Management and Faculty of ECE, GRIET,

for their kind cooperation in supporting for our project.

SIDDHARTH SURESH ________________________

ANAND KARWA _________________________

RAKESH MALLEM _________________________

SRIKANTH BABLU _________________________


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Abstract:

The use of quad copter in the field of armed appliances has grown drastically to

operate in dangerous situations where human can be safe at a distance. Our project

has verified that it is possible to build a small-scale Quadcopter that could be used for

both military and commercial use. Our most significant problems to date have been an

ambitious development schedule coupled with very limited funds. These constraints

have forced compromise in components selected and methods used for prototype

development. Our teams Quadcopter prototype is a very limited version of what

could be created in a production facility using more advanced technology. Currently

our Quad copter has achieved only tethered flight and it can maintain a stable position

when flying. Our next step is to fix the software so that we can achieve controllable

undeterred flight. We are also working on integrating our own Graphical UserInterface (GUI) which will allow us to have direct control over all systems. Although

there are many enhancements that we could do to the design, we have proven that it is

possible to produce a small scale UAV that performs functions of interest to the

military as well as commercial/industrial applications.


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TABLE OF CONTENTS:

INTRODUCTION:..................................................................1

PROTOTYPE SPECIFICATIONS:...........................................2

1.CONTROL BOARD..........................................................2

2.ELECTRONIC SPEED CONTROLLER(ESC)..................12

3.BRUSHLESS DC MOTOR..............................................14

4.LI-PO BATTERY............................................................17

5.TRANSMITTER AND RECIEVER..................................18

ASSEMBLY:.......................................................................22

1.THEORY OF QUADCOPTER........................................23

2.DESIGN.........................................................................26

SOFTWARE IMPLEMENTATION:......................................27

CONCLUSION:....................................................................43

SCHEMATIC:......................................................................44

REFERENCE:.......................................................................45


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INTRODUCTION:

Quad copter is an aerial vehicle which is operated to fly independently.There are several

advantages to quad copters over comparably-scaled helicopters. First, quad rotors do not

require mechanical linkages to vary the rotor blade pitch angle as they spin. This

simplifies the design and maintenance of the vehicle. Second, the use of four rotors

allows each individual rotor to have a smaller diameter than the equivalent helicopter

rotor, allowing them to possess less kinetic energy during flight. This reduces the

damage caused should the rotors hit anything. For small-scale UAVs, this makes the

vehicles safer for close interaction. Some small-scale quad -copters have frames that

enclose the rotors, permitting flights through more challenging environments, with lowerrisk of damaging the vehicle or its surroundings.The prototype has four arms made of

light weight fibre frame to which four motors can be assembled. These motors are

controlled by means of electronic speed controllers(ESC).These ESCs are connected to

the pins of control board. The signal from microcontroller goes to ESCs which in turn

control the speed of motor. In this design we are using four brushless motors which is

able to make the prototype fly and to change its direction. In this type Invensense

gyroscopes are used to attain stability of quad copter. These gyros are used to maintain

good stability condition so that it can balance the whole body of it. The power

distribution in this system is done by a high capacity Li-Po battery of 11.1V giving

adequate power supply.


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PROTOTYPE SPECIFICATION:

KK2.0 Multi-Rotor control Board:

Designed by the Grand father of the KK revolution, Rolf R Bakke, exclusively for

HobbyKing, the KK2.0 is the evolution of the first generation KK flight control

boards. The KK2.0 was engineered from the ground up to bring multi-rotor flight to

everyone, not just the experts. A host of multi-rotor craft types are pre-installed.

Simply select the craft type, check motor layout/propeller direction, calibrate

the ESCs and radio and it is ready to go. All of which can be done with the help of the

on screen prompts.

The original KK gyro system has been updated to an incredibly sensitive

dual chip 3 Axis gyro and single chip 3-axis accelerometer system making this the

most stable KK board ever and allowing for the addition of an Auto-level function.

At the heart of the KK2.0 is an Atmel Mega324PA 8-bit AVR RISC-based

microcontroller with 32k of memory. An additional 2 motor output channels have

been added to the KK2.0 allowing for a total of 8 motors to be controlled (Octo

copter). A handy Piezo buzzer is also included with the board for audio warningwhen activating and deactivating the board.


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The pin diagram of the Atmel Mega324PA is shown in the figure below.


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The 6 Pin USB asp AVR Programming interface ensures future software updates

will be quick and efficient.


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Specifications:

Size: 50.5mm x 50.5mm x 12mm

Weight: 21 gram (IncPiezo buzzer)

IC: Atmega324 PA

Gyro: InvenSense Inc.

Accelerometer: Anologue Devices Inc.

Auto-level: Yes

Input Voltage: 4.8-6.0V

AVR interface: standard 6 pin.

Signal from Receiver: 1520us (5 channels)

Signal to ESC: 1520us

What is a Multi-Rotor Control board

The HobbyKing KK2.0 Multi-Rotor controller is a flight control board for multi-

rotor Aircraft(Tricopters, Quadcopters, Hexcoptersetc). Its purpose is to stabilize

the aircraft during flight. To do this it takes the signal from the three on board

gyros (roll, pitch and yaw) then passes the signal to the Atmega324PA IC. The

Atmega324PA IC unit then processes these signals according the users selected

firmware and passes control signals to the installed Electronic Speed Controllers

(ESCs). These signals instruct the ESCs to make fine adjustments to the motors

rotational speed, which in turn stabilizes your multi-rotor craft.

The HobbyKing KK2.0 Multi-Rotor control board also uses signals from

your radio systems receiver (Rx) and passes these signals to the Atmega324PA IC

via the ail, ele, thr and rud inputs. Once this information has been

processed the IC will send varying signals to the ESCs, which in turn adjust the

rotational speed of each motor to induce controlled flight (up, down, backwards,

forwards, left, right, yaw).

Initial Setup of the Control Board:1.Mount the FC on the frame with the LCD facing front and the buttons facing back.

2.Connect the receiver to the pins on the left side. The negative (black or brown) lead

towards the edgeof the FC. The order is, from front to back: Aileron, Elevator,

Throttle, Rudder and AUX.

3.Connect the motors and servos to the pins on the right side. M1 is the front one and

M8 is the backone.

4.The negative (black or brown) lead towards the edge of the FC.See below for how

to find out which motor goes where.

5.DO NOT MOUNT THE PROPELLERS YET!


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The M1 connector must always have a ESC connected, because this ESC will be the

only one thatsupplies the FC with 5V power. This ensures stable power to the FC.The

M2 to M4's 5V power pin is connected together, and any servos here will be supplied

by any ESC's connected here. There is no necessity to cut the 5V (red) lead on any

ESC unless it has a SwitchingBEC.

With many servos, for example airplane stabilization, there may be need of an extra

BEC. Donot use multiple switched BEC's.

Set up a new model on your transmitter, Use a normal airplane profile.

Turn on the power and press the menu button and enter the "Receiver Test" sub-

menu.

Move each channel on your transmitter and check that the displayed direction

corresponds withthe stick movements. If they disagree, reverse the channel on your

transmitter.

Check that the AUX channel show "ON" when the switch on your transmitter is in

your preferred onposition. If not, reverse the AUX channel on your transmitter.

Use the trims or sub-trims and adjust the channel values shown on the LCD to zero.

Enter the "Load Motor Layout" sub-menu and choose the configuration you want. If

the configurationyou want is not listed, use the "Mixer Editor" sub-menu to make one.

Enter the "Show Motor Layout" sub-menu and confirm the following. Check if the

configuration is correct.Check if the motors and servos are connected to the correct

output and correct rotation direction.Check if the motorspeeds up when dropping the

arm it is mounted on.

Enter the "PI Editor " sub-menu and check for correct PI gain values. Use knowngood values or thedefault ones.

Now we can mount the propellers and test it. Arm the

device by giving right rudder and zero throttle for a

few seconds. It will beep and the LED will turn on. Do not arm it until

themulticopteris put on theground.

SAFE mode the device after landing by holding the rudder to left at zero throttle

and the LED will turnoff. If it shakes and maybe climbs after its airborne, adjust the

Roll and Pitch P-gain down.


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If it easily tips over after its airborne, adjust up.

If it drifts away, use the trims to keep the drift down. It will normally drift away with

the wind. For excessive trimsetings, check if the arms and motors have the correct

angles and that the motors aregoodIncrease the Roll and Pitch I-gain until it flies

straight forward without it pitching up or down.

Turn on the Self-leveling by holding right aileron while arming or disarming it. Turn

it off by holdingleft aileron.

Sub-menu descriptions

"PI Editor":

Adjust the PI gain settings here. Use the PREV and NEXT buttons to highlight the

parameter that needs to changed, then press the CHANGE button. To adjust both Roll

and Pitch at the sametime, see the"Mode Settings "sub-menu.

"Receiver test":

To check output from the receiver.

"Mode Settings":

"Self Level" item: How the self-leveling function will be controlled:

"stick": Turn on Self-leveling by holding the aileron to the right when armingor disarming. Turn it ofwith left aileron.

"AUX": AUX switch channel controls the self-leveling function.

"I part of PI" item: How the heading-hold

function will be controlled:

"On": Always on.

"AUX": AUX switch channel controls the heading-hold function.

"Arming" item: How the heading-hold function will be controlled: "Stick": Arm with right rudder at zero throttle. Disarm with left rudder at zero

throttle.

"On": Always on. Careful with this one. Use it only when the FC does not

control any motors, e.g.when using it for airplane stabilization.

"Link Roll Pitch" item:1. "On": Edit the Roll and Pitch gain parameters together.

2. "Off": Edit the Roll and Pitch gain parameters separately. Use it when

the multicopter has differentinertial mass on the different axis.


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"Stick Scaling"

Here response from the stick can be adjusted to our liking. Higher number gives

higher response.This is similar to the endpoint or volume adjustment on the

transmitter.The transmitter can also be adjustedby adjusting the stick response and use

the stick scaling if even more response is needed.

"Misc. Settings":

"Minimum Throttle" item: Adjust just high enough to keep all the motorsrunning when the throttle isabove zero.

"LCD Contrast" item: Adjust the LCD contrast.

"Self-level Settings":

"Self-level Gain" item: The power of the self-leveling. Higher number is

stronger.

"Self-level Limit" item: Limits the max power of self leveling. Higher number

is higher limit.

"Sensor Test":Displays the output from the sensors. See if all shows "OK". Move the FC around and

see that thenumbers change.

"Sensor Calibration":

Follow the instructions on the LCD. The calibration is only necessary to be done once

per initial setup.

"Esc Calibration":

Instructions:

1. Important: TAKE OFF THE PROPELLERS OR DISCONNECT ONE WIRE

FROM THE MOTOR.

2. Turn off the FC power.

3. Turn on the transmitter and set the throttle to max.

4. Press down button 1 and 4, keep pressing until last step. Releasing the buttons

aborts the calibration.

5. Turn on power to the FC

6. Wait for the ESC to beep its full throttle calibrated signal. Takes a few

seconds, depends on the ESC.7. Lower the throttle to idle.


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8. Wait for the idle throttle calibrated signal.

9. Release the buttons.

"Mixer Editor":

This menu lets you adjust where and how much signal the motors gets from the sticks

and sensors.

This makes us able to make any configuration possible, with up to 8 motors or servos.

To change between the output channels 1-8, press CHANGE when the upper right

number is highlighted.

The value is given by "Throttle" item: Amount of throttle command.

Usually 100% if the output channel is connected to a ESC.

"Aileron" item: Amount of aileron/roll command. Use positive value for

motors on the right side of the roll axis, and negative for the left side of the

roll axis. The value is given by the motor's distance from the roll axis.. More is

further away.

"Elevator" item: Amount of elevator/pitch command. Use positive value for

motors on the front side of the pitch axis, and negative he motor's distance

from the pitch axis. More is further away.

"Rudder" item: Amount of rudder/yaw command. Usually 100%. Use a

positive value for a CW spinning propeller, and negative for a CCW spinningpropeller.

"Offset" Item: Applies a constant offset to the channel. Keep this zero when itis a ESC channel, and around 50% when connected to a servo. Fine tune servo

can be positioned by adjusting this value.

"Type" Item: Set it to the type (servo or ESC) connected to the channel.1. For ESC: Output PWM rate is always high. Gives a output zero when

disarmed or throttle is at idle. Applies the "Minimum Throttle" item

from the "Misc. Settings" sub-menu when armed and throttle is above

zero.

2. For Servo: Output PWM rate can be high or low. Outputs the offset

value when disarmed or throttleis at idle. "Rate":High rate (400Hz) for ESC or digital servos, or low rate (80Hz) for

analog servos.

"Show Motor Layout":

Shows the configuration graphically. Used to check the build and/or the custom mixer

table.

"Load Motor Layout":

Loads one of many fixed configurations. The loaded configuration can be modified


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afterwards.

TUNING GUIDE:

1. Make sure the KK2.0 reads the transmitter stick neutrals. Go to the "Receiver

Test" menu and use the trims to get the values to zero.

2. Go to the "PI Editor" menu and set P to 150 and I to zero for both the Roll and

Pitch Axis. It is only necessary to edit the roll axis and the pitch axis will be

automatically changed to the same values as the roll axis.Leave the P-limit and

I-limit alone, it is seldom necessary to change them.

1. Hover the aircraft and compare the response to the multi copter to other quad

copters.

2. Adjust according to the response. For newbies who do not knowhow to fly,just leave the I-gain at zero or the default value. Also the Yaw PI-gains can be

left at default, but it must be remembered to zero them for the string tuning

method.

Default PI editor settings

Roll/Pitch Axis:

Pgain = 150

Plimit = 100

Igain = 50

Ilimit = 20

Yaw Axis:

Pgain = 150

Plimit = 20

Igain = 50

Ilimit = 10

GYROSCOPE THEROY

A gyroscope is defined as a rigid rotating object, symmetric about one axis.

Generations of children, back at least to Greek antiquity, have found fascination in the

behavior of tops, to give the gyroscope its common name. A number of eminent

physicists have also found the complex behaviour of spinning objects a matter of

interest and a fit subject for detailed analysis.


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More recently, very carefully engineered gyroscopes were used for

navigation because the axis of spin points in a nearly fixed direction when externaltorques are small. This makes the gyroscope a good replacement for a magnetic

compass, particularly in regions where magnetic compasses are unreliable.

As with any mechanical system, the motion of a gyroscope can be understood

completely by a systematic to all the particles of which the rigid body is

made. It is much more efficient, however, to exploit the fact that most of the forces

act between the particles of the body, and simply have the effect of making it rigid.

The overall motion is then described by

with the torque due to external forces Although an

apparently simple equation, analysis of the resulting motions can become very

complicated. For understanding this concept let us take an simplified example

Our toy is spinning about its axis with an angular speed supported at one end on a

frictionless bearing. Choosing the origin at the pivot, gravity will produce a torque

about the origin because the centre of mass is not necessarily above the pivot point,

but there are no other external forces that can produce a torque because the bearing is

assumed frictionless. This implies that both with and must be constant. Further,

the total mechanical energy, including gravitational potential, must also be constant.

The motion will still be interesting, but these conditions let us understand some

qualitative features.


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First, consider the case where the top is spinning rapidly with its axis more or less

horizontal. The external force is vertically downwards, so, the torque is horizontal,

perpendicular to the axis of rotation. Since the spin angular momentum is parallel

to the axis of rotation, is the same length as but pointing in a different

direction.

ELECTONIC SPEED CONTOLLER(ESC)

An electronic speed control or ESC is an electronic circuit with the purpose to

vary an electric motor's speed, its direction and possibly also to act as a dynamic

brake. ESCs are often used on electrically powered radio controlled model , with

the variety most often used for brushless motor essentially providing an

electronically-generated three phase electric power low voltage source of energy

for the motor.

Brushless ESC systems basically drive tri-phase brushless motors by sending

sequence of signals for rotation. Brushless motors, otherwise called out

runners or in runners, have become very popular with radio controlled

airplane hobbyists because of their efficiency, power, longevity and light weight

in comparison to traditional brushed motors. However,brushless AC motor

controllers are much more complicated than brushed motor controllers.

Most modern ESCs incorporate a battery eliminator circuit (or BEC) to regulate

voltage for the receiver, removing the need for receiver batteries.


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Here we use MYSTRY PENTIUM 30A BRUSHLESS ESC.

ELECTRONIC SPEED CONTROLLER


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SPECIFICATIONS OF ESC ARE:

Model:FM30A

Continuos working current:30A

Input voltage:Ni-Mh 6 -12cells Li-ion 2 -3cells

BEC current: 2A(max)

Weight: 25g

FUNCTION OF ESC

BRUSHLESS DC MOTOR:

Brushless DC electric motor (BLDC motors, BL motors) also known as electronically

commutated motors (ECMs, EC motors) are synchronous motors which are powered

by a DC electric source via an integrated inverter/switching power supply, whichproduces an AC electric signal to drive the motor (AC, alternating current, does not

imply a sinusoidal waveform but rather a bi-directional current with no restriction on

waveform); additional sensors and electronics control the inverter output amplitude

and waveform (and therefore percent of DC bus usage/efficiency) and frequency (i.e.

rotor speed).

The motor part of a brushless motor is often a permanent magnet synchronous motor,

but can also be a switched reluctance motor, or induction motor.


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Brushless motors may be described as stepper motors; however, the term stepper

motortends to be used for motors that are designed specifically to be operated in amode where they are frequently stopped with the rotor in a defined angular position.

Here we use DC Outrunner .

The term outrunner refers to a type of brushless motor primarily used in electrically

propelled, radio-controlled model aircraft.

This type of motor spins its outer shell around its windings, much like motors found

in ordinary CD-ROM computer drives. In fact, CD-ROM motors are frequently

rewound into brushless outrunner motors for small park flyer aircraft. Parts to aid in

converting CD-ROM motors to aircraft use are commercially available.

The stationary (stator) windings of an outrunner motor are excited by conventional

DC brushless motor controllers. A direct current (switched on and off at high

frequency for voltage modulation) is typically passed through three or more non-

adjacent windings together, and the group so energized is alternated electronicallybased upon rotor position feedback. The number of permanent magnets in the rotor

does not match the number of stator poles, however. The difference between the

number of magnet poles and the number of stator poles provides an effect that can be

understood as similar to planetary gearing. The number of magnet poles divided by 2

gives the ratio of magnetic field rotation speed to motor rotation speed. Consequently

the advance of the electromagnetic impulse around the motor axis proceeds much

faster than the rotor turns. With more magnet poles the maximum torque is increased,

while the speed of rotor advance is decreased in proportion to the ratio of magnet

poles to stator poles.In our project we use MYSTERY A2212-15 930KV

BRUSHLESS OUTRUNNER MOTOR .


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specification of brushless motor:

- RPM/V: 930 RMP/V

- Input Voltage: 7.4~11.1V

- No-load Current: 0.4A

- Load Current: 12A

- Shaft Diameter: 3mm / 0.12in

- Cable Length: 60mm / 2.4in- Dimensions: 38 x 30 mm / 1.5 x 1.2in(L x Dia.)


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BRUSHLESS DC MOTOR

Lithium-Polymer Battery:

Lithium-ion polymer batteries, polymer lithium ion or more commonly Li-Po

batteries (abbreviated Li-poly, Li-Pol, LiPo, LIP, PLI or LiP)

are rechargeable (secondary cell) batteries. LiPo batteries are usually composed of

several identical secondary cells in parallel to increase the discharge current

capability, and are often available in series "packs" to increase the total available

voltage.Li-poly batteries are also gaining favor in the world of radio-controlled

aircraft, radio-controlled cars and large scale model trains, where the advantages of

both lower weight and greatly increased run times and power delivery can be

sufficient justification for the price. Radio-controlled car batteries are often protected

by durable plastic cases to prevent puncture. Specially designed electronic motor

speed controls are used to prevent excessive discharge and subsequent battery

damage. This is achieved using a low voltage cutoff (LVC) setting that is adjusted to

maintain cell voltage greater than (typically) 3 V per cell.

Extremely high performance RC batteries which (appear to) utilize nano wire battery

technology were introduced in approximately March 2009, and have since become

extremely popular.These new Lithium Polymer (LiPo) batteries boast extremely high

charge and discharge rates up to 5~15C charge rates, and 65C continuous

dischargerates, with 165C burst discharge.

Here we use ZOP POWER 2200MAH LIPO.


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LI-PO BATTERY

Specification:

Battery Configuration: 11.1V 2200mAh 3cell

Battery Capacity: 2200mAh

Max Continuous Discharge (C-rate/current): 20C

Max Burst (3Sec) (C-rate/current): 45C

Approx Dimensions H x W x L (mm): 22.0 x 35 x 104

Approx Weight (g): 166.5

Max Charging rate: 2C.

RF TRANSMITTER AND RECEIVER:

An RF Module (Radio Frequency Module) is a usually small electronic circuit used to

transmit and/or receive radio signals on one of a number of carrier frequencies. RF

Modules are widely used in electronic design owing to the difficulty of designing

radio circuitry. Good electronic radio design is notoriously complex because of the

sensitivity of radio circuits and the accuracy of components and layouts required to

achieve operation on a specific frequency.

Here we are using fly sky (fs) ct6b transmitter and receiver.

RECEIVER MODULE


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Receiver specification :

Channel: 6

Frequency band: 2.4GHz

Power resorce: 1.5V*4AAbattery

Program type: GFSK

Modulation type: FM

RF receiver sensitivity: -76db

Static current: 85mA

Size: 45*23*13.5mm

Weight: 12g

Colour:gray semi-transparent

Antenna length: 26mm


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Transmitter specification:

Channels: 6

Frequency band: 2.4GHz

Simulator port: PS-2

Power resource: 1.5V*8AAbattery

Program type:GFSK

Modulation type: FM

RF power:19db

Static current: 250mA

Antenna length: 26mm

Sub trim: yes

Thro cuv: programmable

Pith cuv: programmable

Support multiple user model

Support trim movement

Support rudder angle overturned

Support rudder angle adjustment

Support programmable channel output.


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Receiver and the server connectivity can be given as

Some of the initial steps to start with the transmitter and receiver can be

given as

1. Install the battery to 2.4G transmitter and shut it down.

2. Insert the matching lines to the channel bat port of the receiver.

3. Connect the receiver battery to any one of the channel port,on the same timethe two LED are flashing and this means the receiver are going to the match

status.

4. Press and hold the button on the transmitter,and then switch on the power

supply.

5. Observe the LED on the receiver,if found that the LED is not flash anymore

and that means successful matched.

6. Release the match button on the transmitter,take out the match line.

7. Install the server and then test.

8. If the tests fail,please repeat the action above.


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9. If the tests success,then insert the power supply port into BAT,match

complete.

Here we use t6configere it is the calibration part of the receiver it calibrates the

transmitter for proper flying of the quad copter.

ASSEMBLY OF QUADCOPTER:

QUADCOPTER FRAME:

It is the important part of the quad copter it should be made of fiber or plastic which is

of light weight and strong. In our project we use Q450. This Q450 is a well thought

out 450mm quad frame built from quality materials. The main frame is glass fiber

while the arms are constructed from ultra durable polyamide nylon.


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THEORY OF QUADCOPTER:

Assembly is a breeze with pre-threaded brass sleeves for all of the frame bolts, so no

lock-nuts are required. It utilizes one size of bolt for the entire build, making the

hardware very easy to keep in order and only requiring one size of hex wrench to

assemble.

A great feature of this frame is the large mounting tabs at the front and rear of the

main frame bottom plate for mounting cameras or other accessories. This makes for agreat way to take aerial video or fly FPV without the need to add any additional

mounting brackets.

The Q450 also features coloured arms (2 white and 2 red) which are great for

orientation. It helps to keep us flying the right direction without the need for different

coloured props. It consists of power board which gives ease in wiring in the board.


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Features:

Built from quality glass fibre and polyamide nylon. Pre-threaded brass sleeves for all

of the frame bolts. Coloured arms for orientation to keep you flying in the right

direction. Large mounting tabs on main frame bottom plate for easy camera mounting.

PROPELLERS:

It is also main part of the quad copter for flying, there are two types of propellers used

in the quad copter they mostly left hand propellers and right hand propellers.


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Left hand propellers are also called as normal propeller and they are mounted to the

motor which is moving in counter clock wise direction.

Right hand propellers are also called as pusher propellers and they are mounted to the

motor which is moving in the clock wise direction.

We are using four propellers controlled by motors and ESCs. Using gyroscopes we

can measure the orientation of prototype in X,Y and Z directions. These are used to

adjust the RPM of each motor.


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ORIENTATION OF AXIS

This prototype contains a theory in which two motors rotate in clockwise directions

and other two opposite motors rotates in counter clockwise direction as shown in the

figure below.


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Software implementation:

#include

//AIL, THR etc

//can also be digital outputs

const byte IN1 = 0; //PD3 (PCINT27/TXD1/INT1) not tested, but use Serial1

const byte IN2 = 1; //PD2 (PCINT26/RXD1/INT0) interrupts good for CCPM

decoding.

const byte IN3 = 2; //PD0 (PCINT24/RXD0/T3) tx0 is on the lcd not sure if using

this would conflict with the lcd

const byte IN4 = 3; //PB2 (PCINT10/INT2/AIN0)

const byte IN5 = 4; //PB0 (PCINT8/XCK0/T0) //timer/counter0 source

//motor outputs can also be digital inputs. these also have PCINT16 to 23 Arduino

interrupts not tested.

const byte OUT1 = 5; //PC6 (TOSC1/PCINT22) //32.768kHz crystal or custom

clock source for counter (rpm sensor)

const byte OUT2 = 6; //PC4 (TDO/PCINT20) //JTAG


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const byte OUT3 = 7; //PC2 (TCK/PCINT18) //JTAG

const byte OUT4 = 8; //PC3 (TMS/PCINT19) //JTAG

const byte OUT5 = 9; //PC1 (SDA/PCINT17) //I2C i2c not tested

const byte OUT6 = 10; //PC0 (SCL/PCINT16) //I2C

const byte OUT7 = 11; //PC5 (TDI/PCINT21) //JTAG

const byte OUT8 = 12; //PC7 (TOSC2/PCINT23) //32.768kHz crystal

const byte RED_LED = 13; //PB3 (PCINT11/OC0A/AIN1) //same as arduino!

//important enable the internal pullups when using these as inputs

const byte BUT1 = 14; //PB7 (PCINT15/OC3B/SCK) PWM pwm not tested

const byte BUT2 = 15; //PB6 (PCINT14/OC3A/MISO) PWM

const byte BUT3 = 16; //PB5 (PCINT13/ICP3/MOSI)

const byte BUT4 = 17; //PB4 (PCINT12/OC0B/SS)

const byte _BUZZER = 18; //PB1 (PCINT9/CLKO/T1) CLOCK output can adjust

with system prescaler. (make tones) not tested

//uncomment if you want to write your own LCD library

/*

const byte LCD_CS1 = 19;

const byte LCD_RES = 20;

const byte LCD_A0 = 21;

const byte LCD_SCL = 22;

const byte LCD_SI = 23;

*/

//analog reads must be done using thier channels, specifying digital pin numbers will

not work in this case

const byte BATT = 3;


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const byte GYR_R = 1;

const byte GYR_Y = 2;

const byte GYR_P = 4;

const byte ACC_X = 5;

const byte ACC_Y = 6;

const byte ACC_Z = 7;

//most of the hardware pwm is on the LCD, LED pins so dont bother. There is PWM

on the buttons.

const int switch_release_debounce_us = 100; //milliseconds

const int switch_press_debounce_uS = 500; //microseconds

void setup() {

// put your setup code here, to run once:

pinMode(RED_LED, OUTPUT);

pinMode(GYR_R, INPUT);

pinMode(GYR_Y, INPUT);

pinMode(GYR_P, INPUT);

pinMode(ACC_X, INPUT);

pinMode(ACC_Y, INPUT);

pinMode(ACC_Z, INPUT);

pinMode(BUT1,INPUT);

digitalWrite(BUT1, HIGH); //enable internal pullup.


digitalWrite(BUT2, HIGH);


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analogReference(EXTERNAL); //important!!

st7565Init( Font5x7 );

st7565SetBrightness(12);

st7565DrawString_P( 64, 40, PSTR("Arduino on") );

st7565DrawString_P( 64, 32, PSTR(" the KK2.") );

st7565DrawString_P( 64, 24, PSTR("Test suite") );

st7565DrawString_P( 64, 16, PSTR(" v1.0 ") );

st7565DrawString_P( 64, 8, PSTR( " Marc G") );

st7565DrawString_P( 50, 1, PSTR("Press any key") );

st7565WriteLogo(); //see library to modify

delay(1000);

while(true)

{

if(!digitalRead(BUT1)||!digitalRead(BUT2)||!digitalRead(BUT3)||!digitalRead(BUT4)

) {

break;

}

}

}

String Str = String("hello hello");

char str[7];


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int ii = 0;

// every time I write debounce code it comes out different. Complicated but I like the

feel of it.

byte button4Pressed()

{

if(!digitalRead(BUT4))

{

delayMicroseconds(switch_press_debounce_uS);

if(!digitalRead(BUT4))

{

while(!digitalRead(BUT4))

{


st7565ClearBuffer();

st7565SetFont( Font12x16 );

st7565DrawString_P( 42, 26 , PSTR("Next") );

st7565Refresh();

digitalWrite(RED_LED,HIGH);

//we could put a beep in here too.

}

delayMicroseconds(switch_release_debounce_us);

digitalWrite(RED_LED,LOW);

return 1;

}

}

return 0;


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}

void fonts()

{

//delay(200);

// st7565SetBrightness(12);

while(true)

{




st7565DrawString_P( 0, 0, PSTR("Font12x16") );

st7565SetFont( Font12x24Numbers );

st7565DrawString_P( 0+40, 15+12, PSTR("12") );

st7565DrawString_P( 34+40, 15+12, PSTR("24") );


st7565DrawChar( 24+40, 20+12, (uint8_t) '.' );


st7565DrawString_P( 20, 14, PSTR("Font5x7") );

st7565DrawString_P( 102, 54, PSTR("Next") );

st7565Refresh();

if(button4Pressed())

return;

}

}

/*


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// needs fixing, causes memory leaks !!

void drawCoordinates(int x, int y)

{

Str = String(x) + "," + String(y);

Str.toCharArray(str,6);

st7565DrawString( x, y, str);

}

void text_position()

{

delay(200);


while(true)

{




st7565DrawString_P( 0, 8, PSTR("Co-ords test") );

drawCoordinates(0,0);










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st7565Refresh();


return;

}

}*/

void analog()

{

int aread = 0;

// delay(switch_release_debounce);


while(true)

{




st7565DrawString_P( 0, 0, PSTR("Analog Read") );


delayMicroseconds(10);

aread = analogRead(GYR_R);

Str = String(aread);


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st7565DrawString_P(10*6,16,PSTR("GYR_R "));

st7565DrawString(16*6,16,str);


aread = analogRead(GYR_Y);



st7565DrawString_P(10*6,24,PSTR("GYR_Y "));



aread = analogRead(GYR_P);



st7565DrawString_P(10*6,32,PSTR("GYR_P "));



aread = analogRead(ACC_X);



st7565DrawString_P(0,16,PSTR("ACC_X "));



aread = analogRead(ACC_Y);


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st7565DrawString_P(0,24,PSTR("ACC_Y "));



aread = analogRead(ACC_Z);



st7565DrawString_P(0,32,PSTR("ACC_Z "));



aread = analogRead(BATT);



st7565DrawString_P(0,48,PSTR("BATT "));



st7565Refresh();


return;

}

}

void buttons()


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{



while(true)

{



st7565DrawString_P( 0, 0, PSTR(" Buttons") );


Str = String(digitalRead(BUT1));


st7565DrawString( 0, 38, str);









st7565Refresh();



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return;

}

}

void leds()

{



while(true)

{

byte offset = 0;

for (int i = 0;i9)

{

offset = 6;

}


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st7565DrawString_P(14*6+offset,28,PSTR(",HIGH)"));

st7565DrawString_P(20*6-2+offset,28,PSTR(";"));


/*


st7565DrawString( 0+OFFSET_X, 15+OFFSET_Y, str);

*/

pinMode(i,OUTPUT);

digitalWrite(i,HIGH);

st7565Refresh();

for(int k = 0;k


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void contrast()

{

while(true)

{

for (int i = 0;i


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}

}

}

void time()

{

unsigned long time = 0;




st7565DrawString_P( 0, 0, PSTR("Test clock") );


st7565DrawString_P( 4, 24, PSTR("One flash per second.") );


st7565Refresh();

while(true)

{

// heartbeat

if (millis() % 1000)

{

digitalWrite(RED_LED,LOW);

}

else

{

digitalWrite(RED_LED,HIGH);


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delay(100);

}


return;

}

}

void loop() {

analog();

buttons();

leds();

fonts();

contrast();

time();

//text_position()

}


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Conclusion:

The overall goal of this project was to create a sustainable and flexible platform for an

UNMANNED AERIAL VEHICLE (UAV) using a Quadcopter design profile. To thiseffect, we have completed this requirement and feel the project was a success. The

platform which we have created is capable of sustained autonomous flight. While this

in essence proves to be short of our ultimate goal, the group is proud to have created a

proven and solid platform for later development. Our platform can be outfitted with

additional sensors (cameras, IR sensors, wireless technology) to expand the overall

usefulness and flexibility the Quadcopter design. The capabilities of this design may

prove to be asymptotic in nature, however these may not be realized until proper

funding is given and experimental analysis is conducted.

Given the stable platform produced by this group, further research and development

can and should be done to improve the functionality of our design. This may be done

by a later Senior.

Design team or by ourselves during our own time and schedule. This project has

increased our interests in robotics and autonomous design, knowledge which will

serve useful throughout our professional careers. We feel that this form of thinking

and engineering will be prevalent in the modern world and beyond as new

applications are found which will test the limits of current technologies. The concept

and goal of Senior Design growing out of an interest and incorporating the knowledge

and skills learned over the undergraduate career, this has been encapsulated in our

project. Overall, the group is proud of our accomplishments and has enjoyed working

on the fore-front of engineering technology over the extent of our Senior Design

coursework.


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SCHEMATIC OF ACCELOROMETER AND

GYROSCOPE:


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REFERENCE:

1.H. Huang, G. M. Hofmann, S. L. Waslander, and C. J. Tomlin, Aerodynamics

and control of autonomous quad rotor helicopters in aggressive manoeuvring,

IEEE International Conference on Robotics and Automation, pp. 32773282,

May 2009.

2.K. M. Zemalache, L. Beji, and H. Marref, Control of an under-actuated system:

Application to a four rotors rotorcraft

3.Gabriel Hoffmann. (2007, January 15) Schematic of reaction torques on each motor

of a quadrotor aircraft, due to spinning rotors.

4.K. Munson. (1968). Helicopters and Other Rotorcraft Since 1907

cd-5-doc quadcopter batch no 30 (1).pdf

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