Request for Approval

Description

The request for approval (RFA) is the very first step in successfully completing a senior design project. Once you are assigned a project, your team must submit an RFA through PACE under the My Project page. Once submitted, your project will be placed on the Web Board as a "Project Request" post, and you can also access this same post through the My Project page we used before.

Once you have submitted your RFA, the course staff will provide feedback on your idea (which will appear at the bottom of your project's page), or suggest changes in the scope of the project and ask you to re-submit an RFA. Based on your responses, your project will be approved, or in some cases, rejected. If your project is rejected, this does not mean failure! Your team just needs to resubmit an RFA that meets the expectations of the course staff. This can be done by repeating the above steps.

Once your project is approved, your team will be assigned a project number in the Projects list. Once all the projects are approved, you will also be assigned a dedicated Professor and TA. This would be the time to double check that all the information for your project in the My Project page is correct.

Video Lecture

Video, Slides

Requirements and Grading

The RFA is worth 5 points, graded credit/no credit based on whether your RFA was submitted before the deadline. The RFA is submitted through PACE under the My Project page, and should include the following information:

Projects must be legal and ethical. They must have significant scope and complexity commensurate with the size of the team. This is, of course, a subjective assessment of the course staff. To gain some insight into this judgment, please browse projects from previous semesters. The project must involve the design of signficant systems (cannot just be integration).

Submission and Deadlines

The RFA submission deadline may be found on the Course Calendar.

Quick Tips and Helpful Hints

Posting: Some general project ideas that are fraught with pitfalls:

Digital Controlled LED Rotating Display System

Guanshujie Fu, Yichi Jin, Keyi Shen, Chentai (Seven) Yuan

Featured Project

# TEAM MEMBERS

Chentai Yuan (chentai2)

Guanshujie Fu (gf9)

Keyi Shen (keyis2)

Yichi Jin (yichij2)

# TITLE OF THE PROJECT

Digital Controlled LED Rotating Display System

# PROBLEM

By visual persistence phenomenon, we can display any images and strings with a rotating LED array. Many devices based on this idea have been developed. However, there are some common issues to be solved. First, the images or strings to be displayed are pre-defined and cannot be changed in a real-time way. Second, the wired connection between some components may limit the rotation behavior, and harm the quality of display. Some economical wireless communication technologies and new ways to connect components can be applied to achieve a better display and real-time image update.

# SOLUTION OVERVIEW

We aim at developing a digital controlled LED rotating display system. A servo motor is controlled to drive the stick with one row of LED to do circular rotation. The connection between LEDs, control circuit, motor and other components should be simple but firm enough to suppose good display and high-speed rotation. Moreover, there is another part to handle users’ input and communicate with the display part via Bluetooth to update images in a real-time and wireless way.

# SOLUTION COMPONENTS

## Subsystem1: Display Subsystem

- LED Array that can display specific patterns.

- Controller and other components that can timely turn the status of LEDs to form aimed patterns.

## Subsystem2: Drive Subsystem

- Servo motor that drive of the LED array to do circular rotation.

- Controller that communicates with the motor to achieve precise rotation and position control.

- An outer shell that has mechanisms to fix the motor and LED array.

## Subsystem3: Logic and Interface Subsystem

- Input peripherals like keyboard to receive users’ input.

- A FPGA board for high-level logics to handle input, give output and communicate with other subsystems.

- Wireless communication protocol like Bluetooth used in communication.

- VGA display hardware offering Graphical User Interface.

# CRITERION OF SUCCESS

- Users can successfully recognize the real-time patterns to be displayed.

- It achieves the precise rotation and position control of motor.

- The motor can drive the LED array and any necessary components to rotate stably and safely.

- The LED array is under real-time control and responds rapidly.

- The communication between components has low latency and enough bandwidth.

# DISTRIBUTION OF WORK

- Chentai Yuan(ME): Mechanisms and servo motor control.

- Guanshujie Fu(CompE): Logic and Interface design and keyboard & VGA display implementation.

- Keyi Shen(EE): Wireless communication and servo motor control.

- Yichi Jin(EE): Circuit design, keyboard & VGA display implementation.