ECE497 Project - LED Matrix Graduation Cap
Embedded Linux Class by Mark A. Yoder
Team members: Devon Adair, Andrew Lund
Contents
Grading Template
I'm using the following template to grade. Each slot is 10 points. 0 = Missing, 5=OK, 10=Wow!
00 Executive Summary 00 Installation Instructions 00 User Instructions 00 Highlights 00 Theory of Operation 00 Work Breakdown 00 Future Work 00 Conclusions 00 Demo 00 Late Comments: I'm looking forward to seeing this. Score: 10/100
(Inline Comment)
Executive Summary
The project that we are doing involves an LED Matrix and the Beagle Bone. We are putting this matrix inside of a graduation cap. An example can be seen here: https://imgur.com/gallery/xr0P0.
<Insert Final Product HERE>
The above image will be inside cap and will display twitter tweets that are tweeted within the SRC during graduation. The cap also will display GIFs and animations.
Packaging
The final packaged product is the LED matrix with everything wired neatly behind the matrix. There is cardboard to make sure that everything stays in place and supports the cap.
The final product looks like this:
This cap is powered off a power bank that supports more than 2.4 Amps.
Installation Instructions
GitHub
The project is located on GitHub here: https://github.com/LinuxDevon/32-bit-Embedded-Linux/tree/master/LED%20Graduation%20Cap
The GitHub has a README on how to install the necessary software for this project.
Hardware
Here are the links for the specific hardware we used for this project.
LED Matrix - https://www.adafruit.com/product/1484
WIFI Dongle - https://www.amazon.com/gp/product/B003MTTJOY/ref=od_aui_detailpages00?ie=UTF8&psc=1
USB Type A Female Connector - https://www.mouser.com/ProductDetail/CUI/UJ2-AH-4-TH?qs=sGAEpiMZZMulM8LPOQ%252byk%252br6FietFiXB9kYqxJAMIhCTiPAQWqJbLA%3d%3d
User Instructions
Pocket Scroller Wiring
This table maps the Pocket Scroller for the Pocket Beagle to the pins on the the Pocket Beagle to eliminate the need for the scroller and reduce space.
| PocketBeagle | |
|---|---|
| R1 | P2.10 |
| G1 | P2.8 |
| B1 | P2.6 |
| GND | P2.15 |
| R2 | P2.4 |
| G2 | P2.2 |
| B2 | P2.1 |
| GND | P1.16 |
| A | P2.32 |
| B | P2.30 |
| C | P1.31 |
| D | P2.34 |
| CLK | P1.33 |
| LAT | P1.36 |
| OE | P1.29 |
| GND | P1.22 |
Below is the reference to the Pocket Beagle to map to the pins given above.
Pocket Beagle Pinout
Highlights
Here is where you brag about what your project can do.
Include a YouTube demo the audio description.
Theory of Operation
Give a high level overview of the structure of your software. Are you using GStreamer? Show a diagram of the pipeline. Are you running multiple tasks? Show what they do and how they interact.
Work Breakdown
List the major tasks in your project and who did what.
| Date | Milestone |
|---|---|
| 10/28/2018 | Have Falcon working without PocketScroller Cape |
| 11/2/2018 | Have twitter API reading tweets on PocketBeagle |
| 11/4/2018 | Have twitter displaying tweets on LED Matrix |
| 11/6/2018 | Figure out how to display tweets as well as sequences on LED Matrix. IE Falcon and our handwritten stuff running at the same time. |
| 11/9/2018 | Have everything fitted to cardboard so that we can wear it as well matrix and beagle running off of power bank |
| 11/12/2018 | Wrap up final documentation |
Also list here what doesn't work yet and when you think it will be finished and who is finishing it.
We tried to get the twitter API to work with Falcon. However, because of a lack of documentation and an unfamiliarity with PHP, we could not get this done. Instead, we tried to get texting to the LED display to work. However, for the same reasons as the twitter API, we also couldn't get this to work! Therefore, we ended up using a weather API that prints out the current conditions of Indianapolis.
Future Work
Suggest addition things that could be done with this project.
Conclusions
Give some concluding thoughts about the project. Suggest some future additions that could make it even more interesting.
References
https://andrewdai.co/beaglecar/sensors-and-interfaces.html
https://www.teachmemicro.com/pocketbeagle-wifi/
http://falconchristmas.com/forum/index.php/topic,4921.0.html
Embedded Linux Class by Mark A. Yoder
