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		+	== '''MP3 Decoder''' ==
		+	This module is a straightforward MP3 player that runs on the YX5300 high-quality MP3 audio chip. MP3 and WAV file formats with sampling rates of 8 kHz to 48 kHz are supported. The micro SD card used to store the audio files can be inserted because there is a TF card socket on the board. By sending commands to the module via the UART interface, the MCU can control the MP3 playback state by altering the volume, switching tracks, etc.
		+	[[File:MP3_Decoder_board.JPG|300px|thumb|center|Serial MP3 Player]]
		+
		+	==== Hardware Design ====
		+	The UART Tx, UART Rx, VCC, and GND pins are the 4 pins that the MP3 decoder module needs. The SJ2 board provided the module with the 3.3V it needed to start up. On the SJ2 board, UART1 pins have been set up so that commands can be sent to the decoder. This UART communication's baud rate is set at 9600 bps. Additionally, this decoder has a speaker-connected 3.5mm audio jack.
		+	[[File:MP3_Decoder_SJ2_Connection.JPG|700px|thumb|center|Connection diagram of MP3 decoder to SJ2 board.]]
		+
		+	==== Software Design ====
		+
		+	[[File:MP3_Initialization.png|700px|thumb|center|MP3 Initialization]]
		+
		+
		+	In our Bow and Arrow project, the command we use plays the song by navigating to its index on the SD card. In our code, the function that sends this command is referred to as play music at index. We must first send the command [Select device] before we can send the instruction to play music at a specific index. The datasheet specifies that you should send "7E FF 06 09 00 00 02 EF" since Serial MP3 Player only accepts micro SD cards. Additionally, the function uart polled put on UART1 is being used to transmit the commands.
		+
		+	[[File:MP3_Flowchart.png|700px|thumb|center|MP3 Flowchart]]
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		+
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	== '''Testing & Technical Challenges''' ==		== '''Testing & Technical Challenges''' ==

---

Revision as of 21:48, 7 December 2022

Grading Criteria

• How well is Software & Hardware Design described?
• How well can this report be used to reproduce this project?
• Code Quality
• Overall Report Quality:
  • Software Block Diagrams
  • Hardware Block Diagrams

    Schematic Quality

  • Quality of technical challenges and solutions adopted.

Bow and Arrow

Abstract

Bow and arrow is a fun, aiming archery game. Our goal is to produce a similar version of ‘Bow and Arrow’ where the archer aims the arrow at the targets (balloons) using the bow. The game would have different levels and the archer would get 3 lives to score maximum points. As the level increases the challenges and speed of the game increase. In the later levels, there would be monsters coming onto the archer. In the later levels, there would be monsters coming onto the archer, and the archer should make sure he dodges those obstacles to save his life and hit the balloons to earn points. This is all displayed on the LED matrix acting as the screen.

Objectives & Introduction

The main objective of this project was to create the “Bow and Arrow” video game displayed on a 64X64 RGB LED matrix, with one SJ2 board as a graphics processor/matrix controller, and another SJ2 board as a controller. Other objectives are the following:

• Design custom PCBs for both the gamepad and matrix controller SJ2 boards.
• Use the FreeRTOS Real-Time Operating System on both SJ2 boards.
• Establish UART communications through Xbee between the two SJ-Two Microcontrollers.
• Create simple coding logic for displaying required characters and game objects.
• Add background music to the game to enhance the gameplay experience.

Team Members & Technical Responsibilities

• Shreya Kulkarni
  • Integrating of Graphics Driver
  • Game logic design
  • Joystick and button Implementation

• Pinky Mathew
  • Interfacing of LED Matrix and driver design
  • Game logic design and implementation
  • Graphics driver design and implementation
  • Joystick Integration

• Pushkar Deodhar
  • Zigbee module
  • Integrating MP3 module with the Game
  • Hardware Designing & PCB Integration

• Noel Smith
  • MP3 Audio Encoder/Decoder
  • Integrating MP3 player with the Game
  • Hardware Designing & PCB Integration

Administrative Responsibilities

Administrative Roles
Finance Manager	Noel Smith
Git Repository Manager	Pinky Mathew
Wiki Report Manager	Shreya Kulkarni
Bill of Materials Manager	Pushkar Deodhar

Schedule

Week#	Start Date	End Date	Task	Status
1	10/16/2022	10/23/2022	Analyze previous projects, discussion and finalize game Discuss and order components Create a GitLab repository.	Completed
2	10/24/2022	10/29/2022	Discuss and plan down the project into modules and assign responsibilities Familiarize with relevant hardware datasheets	Completed
3	10/30/2022	11/05/2022	Develop driver for joystick Develop driver for LED display Design game start, end, level screen Finalize wiki schedule	Completed
4	11/06/2022	11/16/2022	Integration of joystick and character motion Develop driver for MP3 Decoder Game logic development	Completed
5	11/17/2022	11/20/2022	Order circuit boards components and complete the design for printing circuit board and component assembly Circuit board testing Game logic development	Completed Completed Completed Completed Completed
6	11/21/2022	11/23/2022	Integration of circuit boards and microcontroller Continue game logic development Testing and debugging the game logic	Completed Completed Completed
7	11/27/2022	12/03/2022	Integrate game logic code with LED matrix Integrate game sounds with game logic	Completed Completed
8	12/04/2022	12/10/2022	Integrate subsystems Update the wiki page.	In Progress In Progress In Progress
9	12/07/2022	12/13/2022	Address bugs found during system integration Test pause/play functionality	Not started Not started Not started
10	12/14/2022	12/15/2022	Final Demo Update Gitlab repo with final code Add demo video Update the wiki page	Not started Not started Not started Not started

---

Bill Of Materials

Item#	Part Description	Part Model & Vendor	Quantity	Cost
1	Microcontroller Boards	SJ2 Boards (Purchased from Preet Kang)	2	$100.00
2	LED Matrix Display	Adafruit RGB LED Matrix Panel - 64x64	1	$87.95
3	PCB	JLC PCB	5	$18.00
4	Electronics Fun Kit & Power Supply Module	ELEGOO Upgraded Electronics Fun Kit	2	$7.56
5	MP3 Decoder	HiLetgo YX5300 UART Control Serial MP3 Music Player Module	1	$6.99
6	Power Adapter for LED Matrix	Belker 36W Adapter	1	$15.00
7	XBee Module	XBee 2mW Wire Antenna - Series 2C (ZigBee Mesh)	2	$62.00
8	Joystick	HiLetgo Game Joystick Sensor Game Controller	1	$4.89
9	Push Button Switch	Anchor Electronics	1	$1.00
10	Jumper Cables	Anchor Electronics	1	$7.00
11	Female headers for SJ2-PCB Connection	Anchor Electronics	1	$2.50
12	Ribbon Cable Connector for LED Matrix-PCB Connection	Anchor Electronics	1	$1.00
13	Soldering Wire & 18 Gauge Wire	Anchor Electronics	1	$3.00
14	Copper Board for Game Controller Connections	Anchor Electronics	1	$4.00
		Total Cost	22	$317.89

Design & Implementation

PIN CONFIGURATION

MP3 Decoder

This module is a straightforward MP3 player that runs on the YX5300 high-quality MP3 audio chip. MP3 and WAV file formats with sampling rates of 8 kHz to 48 kHz are supported. The micro SD card used to store the audio files can be inserted because there is a TF card socket on the board. By sending commands to the module via the UART interface, the MCU can control the MP3 playback state by altering the volume, switching tracks, etc.

Hardware Design

The UART Tx, UART Rx, VCC, and GND pins are the 4 pins that the MP3 decoder module needs. The SJ2 board provided the module with the 3.3V it needed to start up. On the SJ2 board, UART1 pins have been set up so that commands can be sent to the decoder. This UART communication's baud rate is set at 9600 bps. Additionally, this decoder has a speaker-connected 3.5mm audio jack.

Software Design

In our Bow and Arrow project, the command we use plays the song by navigating to its index on the SD card. In our code, the function that sends this command is referred to as play music at index. We must first send the command [Select device] before we can send the instruction to play music at a specific index. The datasheet specifies that you should send "7E FF 06 09 00 00 02 EF" since Serial MP3 Player only accepts micro SD cards. Additionally, the function uart polled put on UART1 is being used to transmit the commands.

Testing & Technical Challenges

Describe the challenges of your project. What advise would you give yourself or someone else if your project can be started from scratch again? Make a smooth transition to testing section and described what it took to test your project.

Include sub-sections that list out a problem and solution, such as:

<Bug/issue name>

Discuss the issue and resolution.

Conclusion

Conclude your project here. You can recap your testing and problems. You should address the "so what" part here to indicate what you ultimately learnt from this project. How has this project increased your knowledge?

Project Video

Upload a video of your project and post the link here.

Project Source Code

• github repository link[1]

References

Acknowledgement

Any acknowledgement that you may wish to provide can be included here.

References Used

1. Serial MP3 Player Datasheet
2. Binary code pattern generator for LED Matrix
3. Everything You Didn't Want to Know About RGB Matrix Panels

Appendix

You can list the references you used.