Propeller Display
Contents
i. Abstract 5 ii. List of figures 6
Chapter 1. Introduction 7
1.1 Literature survey 8
1.2 Block Diagram 9
1.3 Overview of Project 10
1.4 Overview of Block Diagram 11
Chapter 2. Hardware Design 12
2.1 Interrupter Module 13
2.2 Mechanical Assembly 15
2.3 Power Supply Module 18
Chapter 3. Software Design 19
3.1 Overview of software used 20
3.2 Algorithm 21
3.3 Flow Chart 22
3.4 Pseudo Code 23
Chapter 4. PCB Design 25
4.1 PCB designing steps 25
Chapter 5.Results and Conclusion 26
5.1 Interrupt module testing results 27
5.2 DC motor RPM measurement 28
5.3 Power Supply Testing 28
5.4 Displaying of generated patterns 29
Chapter 6. Appendix 30
6.1 User’s guide 31
6.2 Troubleshooting manual 31
6.3 Source code 32 6.4 reference 54
(i) ABSTRACT
This project is a special kind of circular LED display. With the help some mechanical assembly, LED count, hardware requirement, and hence overall cost is cut to very affordable price. Also, maintenance and repairing of the display is so easy, that anyone having a little electronics knowledge, can take care of this. All the synchronizing can be implemented through software.
First of its kind, made using the 20-pin 8051 series microcontroller, this project use the principle of Space Multiplexing. This propeller display is mechanically scanned and displays the characters in digital format. Made from scrap it can be used anywhere and everywhere and the most amazing fact about this display is it’s crystal clear display. This display consists of just 8 bright LEDs which are rotated to show the display.
For building this project, requirement is just a small 20 pin microcontroller, a
i. Abstract 5 ii. List of figures 6
Chapter 1. Introduction 7
1.1 Literature survey 8
1.2 Block Diagram 9
1.3 Overview of Project 10
1.4 Overview of Block Diagram 11
Chapter 2. Hardware Design 12
2.1 Interrupter Module 13
2.2 Mechanical Assembly 15
2.3 Power Supply Module 18
Chapter 3. Software Design 19
3.1 Overview of software used 20
3.2 Algorithm 21
3.3 Flow Chart 22
3.4 Pseudo Code 23
Chapter 4. PCB Design 25
4.1 PCB designing steps 25
Chapter 5.Results and Conclusion 26
5.1 Interrupt module testing results 27
5.2 DC motor RPM measurement 28
5.3 Power Supply Testing 28
5.4 Displaying of generated patterns 29
Chapter 6. Appendix 30
6.1 User’s guide 31
6.2 Troubleshooting manual 31
6.3 Source code 32 6.4 reference 54
(i) ABSTRACT
This project is a special kind of circular LED display. With the help some mechanical assembly, LED count, hardware requirement, and hence overall cost is cut to very affordable price. Also, maintenance and repairing of the display is so easy, that anyone having a little electronics knowledge, can take care of this. All the synchronizing can be implemented through software.
First of its kind, made using the 20-pin 8051 series microcontroller, this project use the principle of Space Multiplexing. This propeller display is mechanically scanned and displays the characters in digital format. Made from scrap it can be used anywhere and everywhere and the most amazing fact about this display is it’s crystal clear display. This display consists of just 8 bright LEDs which are rotated to show the display.
For building this project, requirement is just a small 20 pin microcontroller, a
References: - 1. www.nex-robotics.com 2. www.logicbrigade.com 3. www.8052projects.com 4. “The 8051 microcontroller and Embedded Systems” by M.A.Mazidi