F20: Tom & Jerry
Contents
INTRODUCTION
We intend to design a game using RGB LED Matrix and microcontroller LPC 4058.
ABSTRACT
The idea is to relive the childhood days using this game with the characters as Tom and Jerry. Jerry will run inside the maze which will be displayed on the RGB matrix. The route for the mouse will be selected from the pre-defined path at initial state in runtime. Tom (player) will chase this mouse by tilting the board left and right. We are using the SoC accelerometer in SJ2 board for sensing the motion. The cat must catch the mouse before mouse reaches its destination hole. If cat get attracted to drink milk (this is an obstacle), then it must halt for some time, and this will waste it’s time for a while at the same place. The mouse will start running first and then after a delay, the cat will start its motion. The score will be displayed on the LCD which is optional display.
OBJECTIVE
The game objectives are as follows:
- Interfacing the RGB LED Matrix with SJTwo Microcontroller
- Coding simple to use display functions for displaying characters at any given position
- Randomizer to generate random position for Jerry
- Tasks that can move Tom depending on the user:
- Interrupt to be generated on press of button to start game/Pause the game
- Score Counter and Energy Counter to be displayed at the top and updated in real time as the game progresses
- Title Screen and Game Over screens
- MP3 driver for playing audio
TEAM MEMBERS AND RESPONSIBILITIES
- Sarika Natu
- Git Repository
- MP3 Decoder Driver
- Game Packaging
- Shivani Pradeep Tambatkar
- Wiki Page Updates.
- Accelerometer Driver
- PCB and Hardware Design
- Integrating Accelerometer and RGB Matrix
- Maze Design
- Finalizing Game Logic and Testing
- Packaging and Component Assembling
- Soumya Sahu
- RGB Matrix Interface and Design of base matrix code.
- Maze Design
- PCB Design Verification
- Finance Manager
- Bill of Material
- Finalizing Game Logic and Testing
SCHEDULE
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BILL OF MATERIALS
| Part | # | Cost | Source |
|---|---|---|---|
| SJ2 Board | 1 | $50.00 | Preet |
| Sparkfun RGB (32x64) LED Matrix Display | 1 | $65.72 | Amazon |
| PCB Fabrication | 1 | $25.00 | JLC PCB |
| 5V/4A Power Adapter | 1 | $8.99 | Amazon |
| 12v DC Power Jack Adapter Connector | 1 | $3.90 | Amazon |
| Jumper Wires | 1 | $6.99 | Amazon |
| Total Cost | $160.6 |
DESIGN AND IMPLEMENTATION
The design section can go over your hardware and software design. Organize this section using sub-sections that go over your design and implementation.
Hardware Design
Discuss your hardware design here. Show detailed schematics, and the interface here.
Hardware Interface
In this section, you can describe how your hardware communicates, such as which BUSes used. You can discuss your driver implementation here, such that the Software Design section is isolated to talk about high level workings rather than inner working of your project.
Software Design
Show your software design. For example, if you are designing an MP3 Player, show the tasks that you are using, and what they are doing at a high level. Do not show the details of the code. For example, do not show exact code, but you may show psuedocode and fragments of code. Keep in mind that you are showing DESIGN of your software, not the inner workings of it.
Implementation
This section includes implementation, but again, not the details, just the high level. For example, you can list the steps it takes to communicate over a sensor, or the steps needed to write a page of memory onto SPI Flash. You can include sub-sections for each of your component implementation.
Printed Circuit Board Design
We have designed and developed a PCB in order to supply power for SJTwo board and RGB LED Matrix which is able to provide 5V supply efficiently. The PCB Layout is designed using the Easy EDA Online Software Tool. The Power Supply circuit board used contains IC7805 voltage regulator IC and a voltage divider to fulfill the specific power requirements. IC7805 is a linear voltage regulator which has a variable output voltage ranging from 4.8 V to 5.2 V and is suitable for our application. We have used a 5V adapter in order to power our board. This serves for both the current requirements.
Fabrication
PCB was sent to fabrication to JLCPCB China which provided PCB with MOQ 2 layers of PCB. DRC elements (in mils)
- Track Width = 12
- Clearance = 10
- Via Diameter = 24
- Via Drill Diameter = 12
Testing & Technical Challenges
LED MATRIX
The OE pin when low, it switches off the LEDs before transition to next row) and LAT (when high) it latches the output pin with current row value). Before transitioning new row value it is important to follow the above instructions, otherwise you will see ghosting effect in the LEDs.
PCB Challenges
- Auto-routing gave lot of challenges and sometimes the wires are barely connected which throws DRC errors very frequently. Even local routing had lot of issues. So design requires careful attention and time.
- The PCB went through a lot of internal revisions even before placing order which was time-consuming.
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
References
Acknowledgement
Any acknowledgement that you may wish to provide can be included here.
References Used
List any references used in project.
Appendix
You can list the references you used.
