soalan praktikal myskills 2013 electronics - akhir

7/27/2019 Soalan Praktikal Myskills 2013 Electronics - Akhir

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Pertandingan MySkills Ke-7

1

PERTANDINGAN MySkills

2013

(ELECTRONICS)

14 JAM

PERINGKAT AKHIR

NAMA: __________________________________________

NO. KP:__________________________________________

JABATAN PEMBANGUNAN KEMAHIRANKEMENTERIAN SUMBER MANUSIA


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Project : Programmable Incubator

Time Limit: 14 hrs

This Project accesses each competitor to design PCB, assemble project; write anEmbedded C code and test the developed prototype.

Project Description:

The incubator regulates temperature and humidity based on three (3) preset modesdetailed in Table 1. The system monitors present temperature and humidity via the SHT25 (I2C based Humidity and Temperature Sensor). Based on the selectable presetMode, the incubator regulates system temperature and humidity. The block diagram ofthe incubator is shown in Fig. 1.

Temperature is regulated by regularly switching ON and OFF the heater (bulb) whichdriven by the system through solid state relay (SSR). While humidity is controlled by

switching ON or OFF the EXHAUST fan or MIX fan. The purposes of the EXHAUST andMIX fan to decrease and increase the system humidity respectively. On top of it,Start/Stop and MODE buttons were provided to start or stop the system and forincremental selecting of MODE. Each pressing of MODE button changes the MODE bya step of one (1). In the case of the present MODE is at a maximum (2) level, anotherpressing of MODE button resulting in the MODE resetting to 0. The completeschematic diagram is provided in Fig. 2.

Fig. 1: Block Diagram of the Programable Incubator

Table 1: Relationship of temperature and humidity with the selected mode.

Type of birds MODE TEMPERATURE HUMIDITY(min) HUMIDITY(max)

Chicken 0 28 0.5C 10% 14%

Goose 1 30 0.5C 12% 16%

Dove 2 32 0.5C 14% 18%


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3

X1

16MHz

C227p

C127p

+

RA0/AN02

RA1/AN13

RA2/AN2/VREF-/CVREF4

RA3/AN3/VREF+5

RA4/T0CKI/C1OUT/RCV6

RA5/AN4/SS/LVDIN/C2OUT7

RA6/OSC2/CLKO14

OSC1/CLKI13

RB0/AN12/INT0/FLT0/SDI/SDA33

RB1/AN10/INT1/SCK/SCL34

RB2/AN8/INT2/VMO35

RB3/AN9/CCP2/VPO36

RB4/AN11/KBI0/CSSPP37

RB5/KBI1/PGM38

RB6/KBI2/PGC39

RB7/KBI3/PGD40

RC0/T1OSO/T1CKI15

RC1/T1OSI/CCP2/UOE16

RC2/CCP1/P1A17

VUSB18

RC4/D-/VM23

RC5/D+/VP24

RC6/TX/CK25

RC7/RX/DT/SDO26

RD0/SPP019

RD1/SPP120

RD2/SPP221

RD3/SPP322

RD4/SPP427

RD5/SPP5/P1B28

RD6/SPP6/P1C29

RD7/SPP7/P1D30

RE0/AN5/CK1SPP8

RE1/AN6/CK2SPP9

RE2/AN7/OESPP10

RE3/MCLR/VPP1

U1

PIC18F4550

MCLR

OSC1

OSC2

OSC2

OSC1

VUSB

1 2 3 4 5 6

J166226-006

MCLR

+5V

PGD

PGC

IO8

IO9

IO10IO11

IO12

IO13

IO14

IO15

PGM

PGC

PGD

ANA0

ANA1

ANA2

ANA3

T0CKI

ANA4

IO0

IO1

IO2IO3

IO4

IO5

IO6

IO7

PWM1

PWM0

TX/RC6RX/RC7

SDOSDA

SCL

SS

PICKIT3

IO16

IO17

IO18

VI1

VO3

GND

2

U27805

C625v/22uF

C725V/22uF

VI1

VO3

GND

2

U37805

C1025v/22uF C11

25V/22uF

D1

1N4001

+12v

+12v

0v

+5V

C825V/22uF

+12v +5v Vo

Coup

microc

T1CKI

D7

14

D6

13

D5

12

D4

11

D3

10

D2

9

D1

8

D0

7

E

6

RW

5

RS

4

VSS

1

VDD

2

VEE

3

LCD1LM016L

+5v Vo

IO1

IO2

IO0

IO4

IO5

IO6

IO7

RV110K

VEE

+5v Vo

Pin15(lcd

)

Pin16(lcd

)

R5

33R

+5v Vo

+5v Vo

R310k

C12100n

MODE

+5v Vo

R410k

C13100n

START/STOP

IO 10

IO 11

X1

Y2

C

13

U5:A4066

X11

Y10

C

12

U5:B4066

Q1BC547

R61k

R710k

IO 12

PWM1

+5v Vo

R8

120R

R1

120R

1

2

J4

SIL-156-02

PWM0

Output For

AC 240V bulb 200w

control via Solid State Relay

1

23

4

J5

SIL-156-04

SCL

SDA

SHT25

HUMIDITY & TEMPERATURE

SENSOR - I2C

R1310k

R1210k

+5v Vo +5v Vo

+5vV

o

VEE

12VDC 2AAdaptor

Fig. 2: Schematic Diagram of the Programable Incubator


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Task 1

Design a single-sided Printed Circuit Board (PCB) based on the GIVEN schematicdiagram in Fig 2.

Task 2

Assemble components on the designed PCB.

Task 3

Build and fix the prototype with all the accessories

Task 4

Write an embedded C code as follows. Use the provided drivers.

4.1. Upon Power Up / Reset; heater, EXHAUST and MIX fan should be OFF.

The preset power (P) and Mode (M) should be OFF and 0 respectively.

These are displayed on the LCD following the format shown below.

Note:

XX is the preset temperature

YY is the preset humidity

4.2. Upon pressing of the Start/Stop Button (PB1) for the first time; P must

indicates ON. System regulates heat and humidity based on in the preset

Mode in task 4.1. The display must be update as shown below.

Note:

XX is the preset temperature

YY is the preset humidity

4.3. Continuously pressing the Start/Stop Button (PB1), P toggling. System

turns ON if previous P is OFF or vice versa. Each changing in P should

be accompanied by changing of the string ON to OFF or vice versa.


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4.4. If the MODE button (PB2) is pressed, M advances by one (1). It rolls off

to 0 when it reaches 3. The display must be updated for each changing

in M.

Task 5

Test and verify the functionality of the designed protoype

Marking scheme:

Item Description Weight Score

1 Funtionality of Developed Protoype 50%

2 Quality of Wiring 6%

3 Quality of Component Assembly 6%

4 Quality of Soldering 6%

5 Design of PCB board 20%

6 Quality of Mechanical Assembly 12%


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Parts List (Table 2)

Item Parts name and value Qty Reference number

1 RESISTORS CORBON TYPE 1/4W 5%

33R

120R

680R

1K

10K Trim Pot Preset PCB Type 10K

121181

2 CAPACITORS

22uF 25v (Electrolytic)

100nF (ceramic) 220nF (ceramic) 27pF (ceramic)

6

412

3 SEMICONDUCTOR COMPONENTS

PIC 18F4550 c/w socket

Voltage Regulator 7805 c/wHeatsink

IC 4066

Transistor BC547

MOSFET IRF540N C/W Heatsink Diod IN4001

12

11

23

4 OTHERS

Copper board 25cm x 11cm LPKFsingle sided PCB FR4229x305x1.5mm with referencehole fiber glass type

LCD LM016L

Crystal 16Mhz

6 pin PCB Header 45 degree bend

Random turn ON Solid State Relay CSW2410FPGSH-10

12V DC Auxiliary Fan Saiz 80mmX 80mm X 25mm

Normaly Open PCB Miniture PushButton Switch

16 Pin Female Header

16 Pin Male Header

1

111

1

2

3

11


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7

AC Bulb C/W Screw type LampHolder - 240VAC 200Watt

Connector - Header 2 PIN

Connector - Header 5 PIN

Ribbon cable - 16 way 10 meter

Aqua Star Aquarium Tankcompleted with top cover materialis Acrylic ,Saiz 30 x 18 x 25.5cm

DC Adapter C/W female conector -12VDC 2A

SHT25 HUMIDITY &TEMPERATURESENSOR- I2C

1

311

1

1

1

The competitor needs to prepare the following equipments, machinery,installations and materials.

Item Qty Material Description Notes

1 1 Soldering Iron and equipment

2 1 Soldering Iron Stand

3 1 Solder wick or Solder Remover

4 1 Brush

5 1 Pincer

6 1 Nipper

7 1 Wire Stripper

8 1 Scissors

9 1 Tweezers

10 1 IC pick

11 1 PCB stand

12 1 Parts box

13 1 Precise screwdriver For trimmer resistor

14 1 Screw driver + type

15 1 Screw driver - type

16 1 Spanner

17 1 Safety Glasses


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Filename: main file.c

Filename: header file 1.h

Filename: lcd 2 x 16 COM3013.c

#include "header file 1.h" // include files and global variables

void main(void){short char CmpTest;

unsigned char i=0;ADCON1= 0b001111; // Digital I/OCMCON = 0b00000111; // off comparator pg 234

Initialize_LCD(); // Must be called prior to usage of LCD

send_control(0x82);putr_lcd("Given Codes");send_control(0xc3);putr_lcd("PKM 2013");

while(1){

}// while

} //Main/* ---------------------End of File --------------------------*/

#include #include #include #include #include #include #include #include

#include #include #include #include #include "lcd 2x16 COM2013.c"#include "SHT 25.c"#pragma config FOSC=XT_XT, PWRT = OFF,BOR = OFF, MCLRE = ON, ICPRT = OFF, WDT=OFF, LVP=OFF, DEBUG=OFF

/* ---------------------End of File --------------------------*/

/*Filename: lcd 2x16 COM2013.c

Date: 20/12/2012Author: Ismail b. AdamEmail: [email protected]: 1Depedency: lcd 2x16 COM2013.h*/

#include "lcd 2x16 COM2013.h"//continue


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//continuation

/*Provide 18 instruction cycles for LCD internal delay*/void DelayFor18TCY( void ){ unsigned char i;

for (i=0; i


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//continuation

void Four_bit_only (char x){while(check_busy());LCD_DATA_TRIS &= 0x0f; // Set data line as outputLCD_DATA &= 0x0f; // clear previous higher nibble on data lineLCD_DATA |= (x & 0xf0); // put higher nibble

LCD_RS = 0; // Logic 0LCD_RW = 0; // Logic 0DelayFor18TCY();LCD_E = 1; // pull high clockDelayFor18TCY();LCD_E = 0; // pull down clockDelayFor18TCY();

}

void send_data(char x){while(check_busy());

LCD_DATA_TRIS &= 0x0f; // Set data line as outputLCD_DATA &= 0x0f; // clear previous higher nibble on data line

LCD_DATA |= x & 0xf0; // put higher nibble

LCD_RS = 1; // Logic 1LCD_RW = 0; // Logic 0

DelayFor18TCY();LCD_E = 1; // pull high clockDelayFor18TCY();LCD_E = 0; // pull down clockDelayFor18TCY();

LCD_DATA &= 0x0f; // clear previous higher nibble on data lineLCD_DATA |= ((x4) &0x0f;LCD_E = 0; // pull down clockreturn x;}

//Continue


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Filename: lcd 2 x 16 COM3013.h

//continuation

/* Print the string from the buffer pointed by pointer*/void puts_lcd(char *pointer){

while(*pointer){ // print till null encounteredsend_data(*pointer);

pointer++;

}}

void putr_lcd(const rom char *pointer){while(*pointer){ // WHILE NOT NULL CHARACTER

send_data(*pointer);pointer++;}

}

void Initialize_LCD(void){LCD_DATA_TRIS = 0b00000000; // Set all lines as outputLCD_E = 0; // Logic 0LCD_RS = 0; // Logic 0LCD_RW = 0; // Logic 0

Delay1KTCYx(250); // 15msFour_bit_only(0b00100000); // (1)1st Function Set - 4-bit (entry 1 T12)send_control(0b00101000); // (2)2nd Function Set - 4-bit, 2 lines, 5X7 (entry 6 T6)send_control(0b00001110 ); // (3)Display & cursor on/off (entry 4 T6)send_control(0b00000110); // (4)Entry mode - inc addr, no shift (entry 3 T6)}

/*---------------------End of lcd 2 x 16 COM2013.c --------------------------------------------*/

/*Filename: lcd 2x16 COM2013.h

Date: 20/12/2012Author: Ismail b. AdamEmail: [email protected]: 1Depedency: delay.h

This free 2 x 16 LCD driver are provided as is without any guarantees or warranty.

Although the author has attempted to find and correct any bugs in thecodes, the author is not responsible for any damageor losses of any kind caused by the use or misuse of the codes.

The author is under no obligation to provide support, service, corrections,or upgrades to the programs.*/

/* definitions of PINs connected to 2 x 16 LCD*/#define LCD_DATA PORTD#define LCD_DATA_TRIS TRISD#define LCD_E PORTDbits.RD0 // EN signal for LCD#define TRIS_LCD_E TRISDbits.TRISD0#define LCD_RS PORTDbits.RD2 // RS signal for LCD#define TRIS_LCD_RS TRISDbits.TRISD2#define LCD_RW PORTDbits.RD1 // RW signal for LCD#define TRIS_LCD_RW TRISDbits.TRISD1

//continue


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//continuation

void DelayFor18TCY( void );/*Provides 18 instruction cycles for LCD internal delay*/

unsigned char check_busy(void);/* Checks busy flag which is b7 of the LCD lines.It returns 1 on busy or 0 on not busy. It could be calledas:

while(check_busy()); // wait here till not busy*/

void send_control(char CMD);/* Sends command (RS=0 and RW =0) to LCD.Returns: NoneExample used:

send_control(x);where x is any character that define as LCD command

For detail please refer to HD44780U (LCD-II) - page 199*/

void Four_bit_only(char CMD);/* Sends only the higher nibble of the given character.Returns: NoneExample used:

Four_bit_only(x:y);sends x only to LCD

*/

void send_data(char x);/* Sends data (RS=1 and RW =0) to LCD.Returns: NoneExample used:

send_data(x);where x is any character to be displayed on the LCD

For detail please refer to HD44780U (LCD-II) - page 199*/

char read_data(void);/* Reads data (RS=1 and RW =1) from the set address.Returns: Character whuch is pointed by the CURSORExample used:

x = read_data();Note:x must be defined as character*/

void puts_lcd(char *pointer);/* Prints the string from the buffer pointed by pointer.The string can be defined on the program RAM/register aschar array1[]="Just testing";

Returns: NoneExample used:

puts_lcd(array1);*/

void putr_lcd(const rom char *pointer);/* Prints the string from the buffer pointed by pointer.The string can be defined on the program ROM aschar const rom array1[]="Just testing";

Returns: NoneExample used:

1. putr_lcd(array1);2. putr_lcd("ASC 2012);

*/

void Initialize_LCD(void);/*Initializes the LCD and must be called once by the main function.For detail please refer to HD44780U (LCD-II) - page 207*/

/*---------------------End of lcd 2 x 16 COM2013.h --------------------------------------------*/


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Filename: SHT 25.h

Filename: SHT 25.c

#define Trig_T_HM 0b11100011#define Trig_H_HM 0b11100101

unsigned int read_temperature(void);unsigned int read_humidity(void);

/* ---------------------End of File --------------------------*/

unsigned int read_temperature(void){char TempHI,TempLO,CHK_SUM;

StartI2C(); // begin I2C communicationIdleI2C(); // wait till bus idle

WriteI2C(add2write); //IdleI2C(); // wait till bus idle

WriteI2C(Trig_T_HM); // trigger TemperatureIdleI2C(); // wait till bus idle

WriteI2C(add2read); //IdleI2C(); // wait till bus idle

TempHI = ReadI2C(); // get the MSBIdleI2C();AckI2C(); // Send back AcknowledgeIdleI2C();

TempLO = ReadI2C(); // get the LSBIdleI2C();AckI2C(); // Send back AcknowledgeIdleI2C();

CHK_SUM = ReadI2C(); // get the ChecksumIdleI2C();NotAckI2C(); // Send back AcknowledgeIdleI2C();

StopI2C(); // stop all I2C communicationsreturn (TempHI


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//continuation

unsigned int read_humidity(void){char HumHI,HumLO,CHK_SUM;

StartI2C(); // begin I2C communication

IdleI2C(); // wait till bus idle

WriteI2C(add2write); //IdleI2C(); // wait till bus idle

WriteI2C(Trig_H_HM); // trigger HumidityIdleI2C(); // wait till bus idle

WriteI2C(add2read); //IdleI2C(); // wait till bus idle

HumHI = ReadI2C(); // get the MSBIdleI2C();AckI2C(); // Send back AcknowledgeIdleI2C();

HumLO = ReadI2C(); // get the LSB

IdleI2C();AckI2C(); // Send back AcknowledgeIdleI2C();

CHK_SUM = ReadI2C(); // get the ChecksumIdleI2C();NotAckI2C(); // Send back AcknowledgeIdleI2C();StopI2C(); // stop all I2C communicationsreturn (HumHI

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