Monitoring Temperature and Recording

1. MONITORING TEMPERATURE
RUANGAN DENGAN DISPLAY LCD
DAN RECORDING
MOCH. REZKI SELAMET
MOKH IMAM NUGROHO
SITI HARYANI
YUDA WARDIANA

2. LATAR BELAKANG
Dalam suatu pengukuran temperature kita
biasanya menunggu guna memperoleh data tiap
menit. Tetapi kadang kala kita selalu meniggalkan
pengukuran karena ada kegiatan lain yang sama
penting. Karna itu alat ini dibuat untuk menyimpan data
temperature supaya data pengukuran tersimpan walaupun
kita tinggalkan.

3. TUJUAN
 Dapat mengetahui suhu ruangan yang terukur
 Dapat menyimpan data temperature
 Dapat mengetahui perubahan suhu ruangan
 Dapat menganalisis data yang tersimpan guna
keperluaan akademik

4. DESKRIPSI ALAT
Alat ini mempunyai 4 buah sensor LM35 yang
ditempatkan pada tiap sudut ruangan ditampilkan
pada display LCD dan di record oleh arduino uno.
Penyimpanan data dengan micro sd module shield
dan di simpan oleh memori micro sd menit permenit
temperaturenya. Data yang disimpan oleh micro sd
module berbentuk .txt(notepad).

5. Alat Dan Bahan
 Arduino Uno

6. LM 35
LM35 TEMPERATURE SENSOR IS ONE TYPE OF SENSOR THAT
CONVERTS ELECTRICAL QUANTITIES TO THE TEMPERATURE
SCALE IN THE FORM OF VOLTAGE. LM35 HAS 3 PIECES PIN
LEGS, PIN TO INPUT POSITIVE VOLTAGE (+), PIN OUTPUT, INPUT
PIN NEGATIVE VOLTAGE / GND (-).

8. LM 35
HOW the LM 35 measure???
Can operate at a voltage of 4 volts to 30 volts.
Each temperature of 1 degree Celsius will show a
voltage of 10 mV.
equation:
Vout = 10 mV / 1ºC
That is, if the read voltage Vout = 500 mV, then the
temperature = 500mv / 10mV = 50ºC.

9. 35 ºC
Vout = 10 mV / 1ºC
That is, if the read voltage Vout = 500 mV, then the temperature =
500mv / 10mV = 50ºC.
EXAMPLE

10. Arduino use sensor LM 35
Read the output of LM35 goes into analog pin, Read
data already in the form of ADC conversion
Converting ADC = Vout / Vref * 1023
So it's not in the form of voltage magnitude
again If you want to know the LM35 output voltage
using the formula above:
Read voltage = Conversion ADC voltage reference *
/ 1024

11. MICRO SD SHIELD
The module (MicroSD Card Adapter) is a Micro SD card
reader module, and the SPI interface via the file system
driver, microcontroller system to complete the Micro SD card
read and write files. Users can directly use the Arduino IDE comes
with an SD card to complete the library card initialization and
read-write

12. Features:
 Support Micro SD Card, Micro SDHC card (high-speed card)
 The level conversion circuit board that can interface level is 5V or 3.3V
 Power supply is 4.5V ~ 5.5V, 3.3V voltage regulator circuit board
 Communication interface is a standard SPI interface
 4 M2 screw positioning holes for easy installation
 Control Interface: A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to ground, VCC is the power
supply, MISO, MOSI, SCK is the SPI bus, CS is the chip select signal pin;
 3.3V regulator circuit: LDO regulator output 3.3V as level converter chip, Micro SD card supply
 Level conversion circuit: Micro SD card into the direction of signals into 3.3V, MicroSD card toward the
direction of the control interface MISO signal is also converted to 3.3V, general AVR microcontroller
system can read the signal
 Micro SD card connector: yes since the bomb deck for easy card insertion and removal
 Positioning holes: 4 M2 screws positioning hole diameter of 2.2mm, the module is easy to install
positioning, to achieve inter-module combination
Mirco SD Card Interface Module :(the last picture show)
 -Control Interface : A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to ground , VCC is the
power supply , MISO, MOSI, SCK is SPI bus , CS is the chip select signal pin
 3.3V voltage regulator circuit : LDO regulator output is 3.3V level converter chip , Micro SD card supply
 Level conversion circuit : Micro SD card into the direction of the signal is converted to 3.3V, MicroSD card
interfaces to control the direction of the MISO signal is also converted into 3.3V, general AVR
microcontroller system can read the signal ;
 Micro SD card connector : a self- bomb deck , easy card insertion .
 Positioning holes : 4 M2 screws positioning hole diameter is 2.2mm, the positioning of the module is easy
to install , to achieve inter- module combination ;

13. LCD AND BACKPACK
This is another great LCD display compatible with
I2C bus and Gadgeteer modules. With limited pin
resources, your project will quicly run out of resources
using normal LCDs. With this I2C interface LCD
module, you only need 2 lines (I2C)to display the
information.If you already have I2C devices in your
project, this LCD module actually cost no more
resources at all. The adress can be set from 0x20-
0x27.Fantastic for Arduino or gadgeteer based
projects.

14. Specifications LCD
•Supply voltage: 5V
•I2C Address:0x20-0x27(0x20 default)
•Back lit (Blue with white char color)
•Interface:I2C/TWI x1,Gadgeteer interface x2
•Adjustable contrast
•Size:82x35x18 mm
Specifications Bacpack PCF8574
• Compatible With Most Microcontrollers
• Low Standby-Current Consumption10 mA Max
• Latched Outputs With High-Current Drive
• I2C to Parallel-Port Expander Capability for
Directly Driving LEDs
• Open-Drain Interrupt Output
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II

15. RTC DS1302
A Real Time Clock Module with battery backup using the
easy to use DS1302 chip. The DS1302 chip uses a simple serial
interface (see datasheet) and example code is available for
Arduino, Raspberry Pi and many others.

16.  Features
 Real-Time Clock Counts Seconds, Minutes, Hours, Date of the
Month, Month, Day of the Week, and Year with Leap-Year
Compensation Valid Up to 2100
 Serial I/O for Minimum Pin Count
 2.0V to 5.5V Full Operation
 Uses Less than 300nA at 2.0V
 Single-Byte or Multiple-Byte (Burst Mode) Data Transfer for
Read or Write of Clock or RAM Data
 Board Size: 44mm x 24mm

17. Desain Project

18. LANGKAH MERANGKAI
 Siapkan alat dan bahan termasuk wadah misting
 Wadah misting lubangi untuk keperluan shield
micro sd dan arduino
 Buat jalur rangkaian pcb untuk pembagian
tegangan dan konektor pin arduino
 Rangkai seperti gambar
 Up load script data pada arduino.

19. SCRIPT ARDUINO#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <SD.h>
#include <DS1302.h>
File myFile;
LiquidCrystal_I2C lcd(0x27, 16,2);
float tempc;
float tempc1;
float tempc2;
float tempc3;
int tempin = 0;
int tempin1 = 1;
int tempin2= 2;
int tempin3 = 3;
int a=1;
int b;
DS1302 rtc(2, 3, 5);

20. void setup()
{
lcd.begin();
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print("Initializing SD card...");
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(10, OUTPUT);
if (!SD.begin(4)) {
Serial.println("initialization failed!");
return;
}
rtc.halt(false);
rtc.writeProtect(false);
}

21. void loop()
{
tempc= analogRead(tempin);
tempc= (5*tempc*100)/1024;
tempc1= analogRead(tempin1);
tempc1= (5*tempc1*100)/1024;
tempc2= analogRead(tempin2);
tempc2= (5*tempc2*100)/1024;
tempc3= analogRead(tempin3);
tempc3= (5*tempc3*100)/1024;
b=a++;
lcd.backlight();
lcd.setCursor(0,0);
lcd.print(b);

22. lcd.setCursor(3,0);
lcd.print(tempc,1);
lcd.setCursor(10,0);
lcd.print(tempc1,1);
lcd.setCursor(3,1);
lcd.print(tempc2,1);
lcd.setCursor(10,1);
lcd.print(tempc3,1);
Serial.println("initialization done.");
myFile = SD.open("T1A1.txt", FILE_WRITE);
if (myFile)
{
Serial.print("Writing to T1A1.txt...");

23. myFile.println(rtc.getDOWStr());
myFile.println(" ");
myFile.println(rtc.getDateStr());
myFile.println(" -- ");
myFile.println(rtc.getTimeStr());
myFile.println("T('C)= ");
myFile.println(tempc);
myFile.print("T1 ('C)= ");
myFile.println(tempc1);
myFile.print("T2 ('C)= ");
myFile.println(tempc2);
myFile.print("T3 ('C)= ");
myFile.println(tempc3);
myFile.println("---------------------------------------------------");
myFile.close();
Serial.println("done.");
}

24. else
{
Serial.println("error opening T1A1.txt");
}
myFile = SD.open("T1A1.txt");
if (myFile) {
Serial.println("T1A1.txt:");
while (myFile.available()) {
Serial.write(myFile.read());
}
myFile.close();
} else {
Serial.println("error opening T1A1.txt");
}
delay(5000);
}

25. LANGKAH PENGUJIAN
DAN DATA PENGUJIAN
Selama 2 jam pengukuran dengan waktu 1 menit
penyimpanan data yang tersimpan 21 kb
sedangkan memori 1.949.302kb.
1hari data=24jam/2jam=12x21kb=252kb/hari
1.949.302kb/252kb/hari=7.735hari
7.735/365=21 tahun

26. KESIMPULAN DAN SARAN
 Data temperature lm35 yang terbaca oleh
arduino harus di ubah ke ADC supaya bisa terukur
suhunya oleh arduino.
 Data yang tersimpan oleh shield micro sd berupa
txt(notepad)
 Backpack yang terpasang pada lcd berguna
untuk memperkecil pin pada lcd
Saran
Untuk mempermudah sambungan pin dan untuk
menempel dengan benar seharusnya dipasan
terminal untuk memperkuat sambungan