PROJECT REPORT NETAJI SUBHAS INSTITUTE OF TECHNOLOGY EC316 Microprocessor Lab PROJECT BIRTHDAY CANDLES Synopsis Our project name is ‘Birthday Candles’. We made this project using 8085 microprocessor. In this project we will blowout the candles by just blowing air from our mouth onto the circuit board. There will be random LEDs flickering when there’s no blowing. A thermistor is used to detect the temperature change, and then blocks of LEDs turn off depending on the change detected. SUBMITTED BY: RAHUL KUMAR AHIRWAR (131\EC\13) SACHIN ROHILLA (147\EC\13)
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PROJECT REPORT
NETAJI SUBHAS INSTITUTE OF TECHNOLOGY
EC316 Microprocessor Lab PROJECT
BIRTHDAY CANDLES
Synopsis
Our project name is ‘Birthday Candles’. We made this project
using 8085 microprocessor. In this project we will blowout the
candles by just blowing air from our mouth onto the circuit board.
There will be random LEDs flickering when there’s no blowing. A
thermistor is used to detect the temperature change, and then
blocks of LEDs turn off depending on the change detected.
SUBMITTED BY:
RAHUL KUMAR AHIRWAR (131\EC\13)
SACHIN ROHILLA (147\EC\13)
PROJECT TITLE AND PARTNER DETAILS
Project Title: BIRTHDAY CANDLES
Student Details: The project was undertaken by:
1. Rahul Kumar Ahirwar (131/EC/13)
2. Sachin Rohilla (147/EC/13).
ACKNOWLEDGEMENT
To complete our project, we are very much thankful to our
Professor Dhananjay Gadre Sir for giving us this opportunity
and guidance throughout the project. We would also like to
thank our friends for their support and help in making the
project. This project was definitely a milestone in our career
and we learnt a lot more than just electronics, values of
hard work and team work.
We would also like to thank our friends and classmates
especially Vaibhav and Sahishnu who worked with us and
helped at each and every point of time we needed help and
assistance. From helping us learn EAGLE, guiding to get PCB
ready, helping us through the soldering sessions, getting
corrections in code and also final checks
On the project and what not, they were always with us. It
was a really good memorable experience working with all
of them.
We would also like to thank all the staff of the Department
of Electronics of Netaji Subhas Institute of Technology for
providing us with all the requisites for completion of this
project.
CONTENTS 1. INTRODUCTION
2. PROJECT DESCRIPTION
3. BLOCK DIAGRAM
4. PROGRAM FLOWCHART
5. PROGRAMMING CODE
6. WORKING
7. TESTING
8. MAKING OF BIRTHDAY CANDLES
9. SCHEMATIC DIAGRAM
10. BOARD FILE
11. GANTT CHART
12. CONCLUSION
13. BIBLIOGRAPHY
INTRODUCTION
The Intel 8085 microprocessor plays a significant role in the everyday
functioning of industrialized societies. The microprocessor is a
multipurpose, programmable, clock driven, register based electronic
device that reads binary instruction from a storage device called
memory, accepts binary data as input, and processes data according to
those instructions and provides results as output.
Intel 8085 is an ideal microprocessor for the purpose of introducing
students with the vast subject of microprocessors. We were inspired to
make a project whereby we can use all the features of Intel 8085 and use
it to create an exciting project.
Our project is LED based birthday candles with the feature to blow out
continuously monitored by the microprocessor. Every year, many
candles are used on birthday occasion. Therefore we can replace it with
microprocessor based birthday candles.
PROJECT DESCRIPTION
The objective of the project is to design LED based birthday candles
with the feature to blow out continuously monitored by the
microprocessor. When a person blows air on the thermistor, it cools
down and this reduces the voltage at the resistor junction. If the
voltage drop is more than a certain preprogrammed threshold, the
microprocessor starts putting off LEDs in a random sequence.
Various components are used in making the project which are