Senior Design Project - JPL Mirror Deployment Mechanism

General Information:

The team: Dr. Farhana Abedin(Project Advisor), Jonathan Sycip(me), Darlene Cardenas, Otto Polanco(JPL Mentor), Claudia Pineda, Marlen Genaro, Trevor Bilak-Sackin

I worked with a team of four other members and my role on the team was Lead Electronics and Software Engineer. This project was supervised by the JUCI (JPL University Crowdsourcing Initiative) Program. Our mentor from this program was JPL Optomechanical Engineer, Otto Polanco, and a senior project advisor for the Electromechanical Systems Engineering Technology department, Dr. Farhana Abedin.

Objective:

Objective of this project was to design a mechanism for a space telescope segment that will rotate a mirror from a stowed configuration at 90 degrees to a deployed configuration at 30 degrees, for my role on this project I primarily focused on the control systems, electronics, and software for the mechanism.

45 degrees from vertical

105 degrees from vertical

105 - 45 = 60 degrees of movement

Requirements

Mechanism should provide rotation capability of 60-degrees

System must demonstrate full autonomy.

System shall include a sensor to provide feedback to a system.

Budget shall remain under $500

Requirements Table

Contributions:

My responsibilities as Lead Electronics Engineer included:

Selecting electronic components via trade studies
Component testing
Constructing wiring diagrams
Designing electronic housing
Software development in Java(Android Studio) and C++(Arduino)

Other responsibilities I had being apart of a team:

Fabricating mechanical parts via 3D Printing
Attending team meetings with project advisor(weekly) and JPL mentor(biweekly) to give status report and updates

What I learned from this project:

For this project I learned project management workflow systems and how to define requirements.

The project timeline :

1. Design Criteria Review (DCR)

2. Preliminary Design Review (PDR)

3. Critical Design Review (CDR)

4. Assembly/Prototyping

5. Project Symposium Presentation

Sample pictures/videos:

Physical Prototype

Mechanical Components

Gantt Chart

Part Number	Name	Quantity		Vendor	Cost
23HS45-4204S	NEMA 23 Stepper Motor	1		StepperOnline	$39.99
DM542T	Stepper Driver	1		StepperOnline	$28.99
B073TYWX86	Limit Switches	25		Amazon	$6.99
HC-05	Bluetooth Module	2		Amazon	$15.99
-	Arduino Uno	1		Amazon	$29.85
TOTAL COST			$ 91.56