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Zambrut.com. Publication date: August, 2019.
Aung, W. P., Zaw, K. K. T. & Win, H. K. 2019. Labview Interfacing Arduino for Servo Motor ................ 1
International Journal of Engineering & Industry ISSN: 2191-3315, Volume 4, Issue 1, page 1 - 7
Zambrut
Labview Interfacing Arduino
for Servo Motor Control in
Mini Vending Machine
Wai Phyo Aung1, Khun Kyaw Thet Zaw
2 & Htut Ko Win
3
1Wai Phyo Aung,
2Khun Kyaw Thet Zaw &
3Htut Ko Win
1Ph.D (Electronics), EcE Department, TU (Loikaw), Myanmar
2Demostrator, EcE Department, TU (Loikaw), Myanmar
3B.E (EC)-2018, TU (Loikaw), Myanmar
1. INTRODUCTION
1.1 Introduction to Labview
Labview which is virtual instrumentation software by which we can monitor different sensors
using only signal computer. To run Labview software, system must have high performance processor
such as laptop, that supports an idea of Interfacing LabVIEW with Arduino which was cheaper. As this
project is helpful in different applications like industries, agriculture, home and many more. Labview is
abbreviation of Laboratory virtual instrument engineering workbench which is created by national
instruments. It is a graphical programming language which uses icons instead of text create
applications. Labview codes are also known as virtual instruments or VI’S for short. Labview is
extensively used for data acquisition signal analysis and also for hardware control. Labview consist of:
1) Front panel window and 2) block diagram window. Front panel window’s function is to control and
show indicators of the system. Block diagram window’s function is to make programs and coding of
the system (Sandip Parmar, 2018).
Abstract: Controlling the servo motors is very important as any small change can lead to
instability of the closed loop system. The aim of this paper is to show how servo motor can be
controlled by using LabVIEW. Servo Motor will be interfaced with LabVIEW using an
Arduino Uno. The speed of the Servomotor will be set by creating a Graphic User Interface
(GUI) in LabVIEW. LabVIEW will send serial command to the Servo motor using the PWM
pins on theMicrocontroller board. The main project that constructing Arduino based vending
machine is sucessfully done as a graduation project using open source. In this research paper, the
effective application of LabVIEW interfacing Arduino Firmware was used to test servo speed
control and then supports to real world vending machine process.
Keywords: Servo Motor, LabVIEW, Arduino, Open-Loop, Closed-Loop, vending machine
Zambrut.com. Publication date: August, 2019.
Aung, W. P., Zaw, K. K. T. & Win, H. K. 2019. Labview Interfacing Arduino for Servo Motor ................ 2
International Journal of Engineering & Industry ISSN: 2191-3315, Volume 4, Issue 1, page 1 - 7
Zambrut
Picture 1. LabView Window
1.2 Introduction to Arduino Uno
Before we can understand the UNO’s hardware, we must have a general overview of the
system. After code is compiled using Arduino IDE, it should be uploaded to the main microcontroller
of the Arduino UNO using a USB connection.
Picture 2. Pin Specification of Arduino UNO Board
Because the main microcontroller doesn’t have a USB transceiver, it need a bridge to convert
signals between the serial interface (UART interface) of the microcontroller and the host USB signals.
The bridge in the latest revision is the ATmega 16U2, which has a USB transceiver and also a serial
interface ( UART interface). To power Arduino board, use the USB as a power source. Another option
is to use a DC jack. To reset board, should use a push button in the board. Another source of reset
should be every time, open the serial monitor from Arduino IDE.( John Harold A,2015)
Zambrut.com. Publication date: August, 2019.
Aung, W. P., Zaw, K. K. T. & Win, H. K. 2019. Labview Interfacing Arduino for Servo Motor ................ 3
International Journal of Engineering & Industry ISSN: 2191-3315, Volume 4, Issue 1, page 1 - 7
Zambrut
2. MINI VENDING MACHINE SYSTEM As a servo motor control vending machine , Arduino UNO board, Nokia LCD 5110, four servo
motor and four push-buttons are used. Rectifier circuit is used for LED string light. Uno is used to
program for the vending machine while LCD is for showing the information such as inserting coil and
making a selection. User can choose the product by touching the related button. For the servo motor, it
is used for the dropping of the product.
LCD 5110
8 7 6 5 4 3 2 1
3.3V
5v
GND
A0
A!
A2
A3
A4
A5
Arduino UNO
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Servo 1
GROUND
Coin insert
AC 220V
String light
14
5V
12V
0V
Servo 2
Servo 3
Servo 4
Picture 3. Overall Circuit Diagram of Vending Machine
As Arduino based project, it is convenience and easy to build and no many components are
needed. This can run automatically as long as it is supplied by the required amount of power. So, no
employee is needed to cash and to give service to the customer for showing them where the products
are. It can use everywhere that the required power supplied can get.
Therefore, it can be put at the public places like garden, train station and others. So, people can
buy easily whenever they needed even when they relaxing. The main disadvantage of this project is the
detection of the correct coin. As this is the general process of the vending machine so user doesn’t add
the sensor to detect the coin.
As testing result of a vending machine design, result photos are mentioned in Picture 4 to
Picture 5.
Picture 4. Combining Arduino, LCD and Servos
Zambrut.com. Publication date: August, 2019.
Aung, W. P., Zaw, K. K. T. & Win, H. K. 2019. Labview Interfacing Arduino for Servo Motor ................ 4
International Journal of Engineering & Industry ISSN: 2191-3315, Volume 4, Issue 1, page 1 - 7
Zambrut
Picture 5. Testing servo motor with coil
3. LABVIEW INTERFACING ARDUINO TO CONTROL SERVO MOTOR
3.1 Step by Step Procedure
Interfacing of LabVIEW and Arduino combines both the simplicity of Aduino hardware board
and the graphical language of LabVIEW. Now we do not need to write lines of code and also we do not
need the other complex hardware boards. The list of software we are required to install for interfacing
of Arduino and LabVIEW are as follows.
Arduino IDE
LabVIEW
Visual Package Manger
LabVIEW Interface for Arduino
NI-VISA Package
After installation, we can test installation using sample program at the “finish” dialogue box.
Picture 6 to Picture 8 show how to make a program Arduino with LabVIEW.
Picture 6. Searching Ardiono in LabVIEW
Zambrut.com. Publication date: August, 2019.
Aung, W. P., Zaw, K. K. T. & Win, H. K. 2019. Labview Interfacing Arduino for Servo Motor ................ 5
International Journal of Engineering & Industry ISSN: 2191-3315, Volume 4, Issue 1, page 1 - 7
Zambrut
Picture 7. Arduino Block in Block Diagram of LabVIEW
Picture 8. Showing how Arduino Upload LIFA Firmware to be interfaced with LabVIEW
3.2 Servo Motor Control in LabVIEW Interfacing Arduino The following main processes are done as Servo Motor Control in LabVIEW Interfacing
Arduino. The Block Daigram and Front Panel of this process .vi file was shown in Picture 9 and Picture
10.
Initailize the connection to the Arduino. If nothing is connected to the VISA Resource input the
Init vi will attempt to auto connect to the Arduino.
Set the number of Servos to use, starting with 0.
Zambrut.com. Publication date: August, 2019.
Aung, W. P., Zaw, K. K. T. & Win, H. K. 2019. Labview Interfacing Arduino for Servo Motor ................ 6
International Journal of Engineering & Industry ISSN: 2191-3315, Volume 4, Issue 1, page 1 - 7
Zambrut
Configure the two servos by assigning them digital I/O pins.
Write an angle to Servo 0 based on the loop iteration. Servo 0 will sweep from 0 degrees to the
user specified angle and repeat. This angle is also read from the servo and displayed on the front
panel.
Picture 9. Front Panel in LabVIEW
Manually set the angle of servo 2. This angle is also read from the servo and displayed on the
front panel.
Close the connection to the Arduino.
Picture 10. Block Diagram in LabVIEW
Picture 11. Connetion of Arduino to Servo Motors
4. DISCUSSION AND CONCLUSION
The servo motor control vending machine is mainly controlled by using Arduino UNO
board which can program for the entire project to run automatically. Using a microcontroller is more
convenience instead of PIC with the other requirements. For the changing of technology, automatic
machines are mostly used all over the world. Although all automatic machines are not the same, the
Zambrut.com. Publication date: August, 2019.
Aung, W. P., Zaw, K. K. T. & Win, H. K. 2019. Labview Interfacing Arduino for Servo Motor ................ 7
International Journal of Engineering & Industry ISSN: 2191-3315, Volume 4, Issue 1, page 1 - 7
Zambrut
working system may be the same. It all can run as long as it has enough power. Without needing any
human to give service for selling a product is the advantage of this project.
The method adopted in this paper is low cost technique of controlling the speed of the Servo
motor. Arduino Uno board plays the role of Data Acquisition System. This technique helps in
maintaining the stability of the system. Servo motor is interfaced with Indicator or Knob in LabVIEW
via Arduino Uno board. The method implemented can be used for various industrial applications. In
this paper, the approch concepts of LabVIEW.
5. REFERENCES 1. John Harold A., Jullan Victor S., Clint Vincent A., Gildred Roberto Jr. L.: Design and Fabrication of an Instant
Noodle Vending Machine, Mapua Institute of Technology, 2015.
2. Kamalanathan P., Irshath Ahmed R., Kalaiselvan P.: Automatic Paper Vending Machine, International Journal of
Science, Engineering and Technology Research, Volume 4, Issue 4, 2015.
3. Prof.S.S.Desai, SayaliMarutiJadhav, PriyaShivajiPatil, Giri Neeta Sambhaji: Automatic Chocolate Vending
Machine By Using ArduinoUNO, International Journal of Innovative Research in Computer Science &
Technology, ISSN: 2347-5552, Volume 5, Issue 2, 2017.
4. Sandip Parmar , Kalpesh Chudasama, Jayesh Vankar, Apurva Gohil, “Monitoring and Control of Speed of DC
Motor using LabVIEW Environment”, International Journal for Research in Engineering Application &
Management (IJREAM),ISSN : 2454-9150 Vol-03, Issue-12, March 2018.
5. Naveen Kumar and Dr. Prasad Krishna, "Low cost data acquition and control using Arduino Prototyping platform
and LabVIEW",IJSR,Volume 2, Issue-2, February 2013. 6. Olden. P, “Open Loop motor speed control with LabVIEW”, SoutheastCon, Proceedings IEEE,
pp. 259-262, 2001, (Conference Publications).
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