PROJECT REPORT LED AUDIO VISUALIZER

HANOI UNIVERSITY OF SCIENCE AND TECHNOLOGY SCHOOL OF ELECTRONICS AND TELECOMMUNICATIONS PROJECT REPORT Name of students: Name of instructor: Hanoi, Date HANOI UNIVERSITY OF SCIENCE AND TECHNOLOGY SCHOOL OF ELECTRONICS AND TELECOMMUNICATIONS PROJECT REPORT LED AUDIO VISUALIZER Name of students: EEE – Class 58 – Team Name of instructor: Name of referee: …………………………………… Hanoi, Date Table of Contents List of Figures iii List of Tables iv ACKNOWLEDGEMENT .v ABSTRACT vi Introduction 1.1 Motivation 1.2 Purpose Specification Requirements 2.1 Executive Summary 2.1.1 Project Overview 2.1.2 Purpose and Scope 2.2 Product Description 2.2.1 Product Context .1 2.2.2 Assumptions 2.2.3 Constraints .2 2.3 Requirements 2.3.1 Functional Requirements .2 2.3.2 Non-functional Requirements Planning 3.1 Task Table .4 3.2 Human Resource Table 3.3 Gantt chart and Network Diagram 10 Block Designing 14 4.1 Audio Input and Amplifier 15 4.2 Filter 17 4.3 Display .19 4.4 Power Source 20 4.5 Schematic Diagram .21 Testing .21 5.1 Simulation 21 5.2 Breadboard 22 Manufacturing 22 6.1 PCB layout 22 6.2 Final Product 24 CONCLUSION .26 References .27 APPENDIX A - BILL OF MATERIALS A APPENDIX B – TRANSISTOR PN2222A DATASHEET .C List of Figures Figure 2.1 Product's top view Figure 2.2 Product's side view Figure 3.1 Project's Gantt chart 11 Figure 3.2 Project's Network Diagram 12 Figure 4.1 Product's Block Diagram 13 Figure 4.2 Audio Input and Amplifier Block 13 Figure 4.3 3.5mm stereo jack and socket diagram 14 Figure 4.4 High-band Filter 15 Figure 4.5 Mid-band Filter 16 Figure 4.6 Low-band Filter 16 Figure 4.7 Filter Response .17 Figure 4.8 Display Block .17 Figure 4.9 Product's Schematic Diagram .18 Figure 5.1 Breadboard Prototype 19 Figure 5.2 Simulation on Proteus 19 Figure 6.1 PCB Top Layer .20 Figure 6.2 PCB Bottom Layer .21 Figure 6.3 Final Product 22 List of Tables Table 3.1 Task Table Table 3.2 Human Resource Table Table 3.3 Resources Assigning Table Table 4.1 Diodes Comparing Table 14 Table 4.2 NPN-transistor Comparing Table 15 Table 4.3 Power Source Comparing Table .18 ACKNOWLEDGEMENT In the age of the present information explosion, the applicability and the potential development of the advertising information are very big, the application of the new techniques is very necessary in this field We really appreciate Dr xxx’s help with our project, and he created favorable conditions for our team to complete brilliantly this project Although we made every effort, our ability is limited Moreover, this project is a new field for our team, so we should not avoid design errors in content and the method of presentation Our team is looking forward to Dr xxx’s guidance and your additional suggestion to improve this project We would like to say thanks to everybody who helps us on this project! ABSTRACT As the demand for decoration increases so does the need for high performance and cheap price electric stuffs with LEDs The goal of this project is to design and build a LED flashing circuit controlled by audio In this report, the design of the LED circuit to meet the specification is explained The circuit does not involve microcontrollers for simplicity The circuit was built using the Proteus ISIS as a CAD tool The design of the LED flasher was simulated in Proteus to verify its performance Then the circuit was tested on the breadboard In most cases, the objectives of the project were met However, there should be some recommendations for further research and work 1 Introduction 1.1 Motivation We choose this project because of some reasons: - People usually forgot to switch the light off when we don’t use it anymore and cause electricity wasting - Sometimes, people don’t turn the light on due to lazyness and work under dark enviroment Therefore we see that it is necessary to make an smart lamp that can turn on/off automatically to reduce energy wasting and provide sufficient light for the eye 1.2 Purpose - Understand steps in the designing process - Know how to use several electrical equipment, and designing software - Build a well-performed Automatic night light with low price Specification Requirements 2.1 Executive Summary 2.1.1 Project Overview The LED lamp which can automatically regulate the brightness depending on the light level 2.1.2 Purpose and Scope This document addresses the requirements related to the designing phase of the project 2.2 Product Description 2.2.1 Product Context The product is independent and self-contained It is not related to any other products or larger systems 2.3 Requirements 2.3.1 Functional Requirements - The product must have two modes: + Manual switching + Automatic: using photoresistor - The product must have a tuning in order to adjust the brightness of the LEDs - The product should be powered by an AC/DC adapter 2.3.2 Non-functional Requirements 2.3.2.1 Performance 2.3.2.2 2.3.2.3 Hardware Platform - Light emitting diodes (LEDs): Voltage: 12V 2.3.2.4 Appearance - Like a normal lamp - Weight: less than 300g 2.3.2.5 Power Consumption - Power Supply: DC-12V/2A - Power Consumption: 20W 2.3.2.6 Development Time About weeks 2.3.2.7 Development Cost Less than VND 500,000 Planning The next phase in the project is developing plan We created a plan to finish the project on time which started with the Task Table and the Human Resource Table 3.1 Task Table Our project consists of tasks In some tasks, there are sub-tasks Each task has its own deliverables The project starts on December 6th, and ends on January 30th Table 3.1 Task Table Task ID Task Name #1 Learning the basic principle of each component Duration Start Date Dependencie s End Date Deliverables weeks December 6th December 26th Understanding of how the product is made and have the requirement knowledge to make the product The appearance of weeks the lamp December 6th December 19th Have an idea of how the product looks like th th Hardware weeks December December 26 Know about the electronics component to make the product December 19th Programs to make the product works Software #2 Drawing the principle and block diagrams Principle diagram Block diragram weeks December 6th weeks December 13th December 26th Block diagram and principle diagram weeks December 13th December 26th Principle diagram weeks December 13th December 26th Block diagram #3 Making the first model weeks December 27th January 23rd #3.1 Preparation week December 27th January 2nd week December 27th January 2nd week December 27th January 2nd weeks January 3rd January 23rd weeks January 3rd January 23rd #3.2 Buying electronic devices Checking the application in need Construct a prototype Power supply #1 #2 #3.1 First model Connect electronic devices onto the circuit board Checking software together through TeamViewer Designing the slide Testing and fixing #3.3 #4 weeks January 3rd January 23rd weeks January 3rd January 23rd weeks January 3rd January 23rd week January 24th January 30th Slides #3 Final product 2.4 Human Resource Table Our team has members Each one has different strength and weakness The following table will help us on assigning resources to tasks for maximum productivity Table 3.2 Human Resource Table #1 ID Name Pham Manh Tuan #2 Pham Xuan Viet #3 Nguyen Pham Anh Tuan #4 Nguyen Duc Vinh Strength - Leading skill - Electrical components - Drawing - Searching skill - Note-taking skill - Presentation skill - English skills - Microsoft Powerpoint - Enthusiasm Weakness Availability - Programming Weekdays language C/C++ - Programing - Electronics Weekdays - Programing - Circuit design Weekdays - Presentation skill Weekdays Then the team members are assigned to the tasks Table 3.3 Resources Assigning Table Task ID #1 Task Name Member Name Learning the basic principle of each component All members Other #2 #3 #3.1 #3.2 #3.3 #4 The appearance of the lamp Nguyen Duc Vinh Hardware Pham Manh Tuan, Nguyen Pham Anh Tuan Software Pham Xuan Viet Drawing the principle and block diagram All members Principle diagram Pham Xuan Viet Block diagram Nguyen Duc Vinh Making the first model All members Preparation All members Buying the Electronic devices Pham Manh Tuan, Nguyen Pham Anh Tuan Checking the application in need Pham Xuan Viet, Nguyen Duc Vinh Construct a prototype All members Power supply Pham Manh Tuan, Nguyen Pham Anh Tuan Connecting the electronic devices onto the circuit Pham Manh Tuan, Nguyen Pham Anh Tuan board Checking the software together through Pham Xuan Viet TeamViewer Designing the slide Nguyen Duc Vinh Testing and fixing All members 2.5 Gantt chart and Network Diagram We have scheduled and managing our project around this gantt chart Figure 3.1 Project's Gantt chart 10 Block Designing The next phase of our project is designing the product We made a block diagram of the product Figure 4.2 Product's Block Diagram 11 After having the block design, we make the detailed design of each block.[2] 4.2 Principle Diagram 12 4.1 Display In this part, a light bulb will be the main component which is then powered by adapter and controlled by Arduino There are various options to choose so after doing calculations, we have come to the conclusion of using 12V LED bulb Criteria (weight) Muy LED Bulb Price Reliability Brightness Lifespan (0.3) (0.3) (0.2) (0.2) 12V led bulb 0,8 (0,8) 4,7(0,94) 630(0,63) 35000(0,71) 0,574 120V led bulb 3,75 (0,375) 4,5(0,96) 400(1) 30000(0,83) 0,75 10 (1) 4,4(1) 800(0,5) 25000(1) O,9 $ Stars Lumen Hours 120V Sengled bulb Unit 13 (µ) 4.2 Sensor For this part, we use a regular Light-dependent resistor as a component to detect the intensity of light from environment The first pin of the resistor is connected to pin A0 of arduino and it is also joined by 5V power wire in serial with 1k ohm resistor The left pin is connected to the GND pin of Arduino and relay 14 4.3 Power source The 12v adapter power the light bulb have been selected based on the light bulb speculation and some calculations as well Criteria (weight) Muy Power Source 12V cell 48V Adapter 12V Adapter Unit Voltage Reliability Price (µ) (0.4) 12(0,25) 48(1) 12(0,25) Volt (0.3) 4.6(0,91) 4.2(1) 4.3(0,98) Stars (0.3) 22(1) 17(0,78) 6.95(0,32) $ 0.673 0.934 0.49 To power the sensor and Arduino, we use 5V passed through cable connected to laptops or other similar external source \ 15 Figure 4.3 Mid-band Filter ... cheap price electric stuffs with LEDs The goal of this project is to design and build a LED flashing circuit controlled by audio In this report, the design of the LED circuit to meet the specification...SCHOOL OF ELECTRONICS AND TELECOMMUNICATIONS PROJECT REPORT LED AUDIO VISUALIZER Name of students: EEE – Class 58 – Team Name of instructor: Name of referee:... and Network Diagram We have scheduled and managing our project around this gantt chart Figure 3.1 Project' s Gantt chart 10 Block Designing The next phase of our project is designing the product