F21: FollowMe
Contents
Abstract
FollowMe is a video game where you follow the correct directions. The LED matrix will display a series of arrows and the player or players need to correctly wave their hand over their gesture sensor to earn points. However, watch out for the background color of the arrow. If the background is green, then the players need to wave their hand in that direction; i.e, an arrow pointing left with a green background means wave your hand from the right to the left (wave left). If the background is red, then the players need to wave their hand in the opposite direction; i.e, an arrow pointing up with a red background means wave your hand from the top to the bottom (wave down).
There'll be two modes:
1. Timed mode: each player tries to get the most correct waves until the time runs out. The rate at which the arrows change will increase as the timer counts down.
2. Endurance mode: each player tries to stay alive the longest. One wrong wave then you're eliminated, the last player standing wins.
At the end, the LED matrix will display the leaderboard for the players and how many waves/instructions they got correct.
- Block Diagram of Follow Me needs to be added
Objectives & Introduction
Project Introduction
1.Analyse hand waving/movement using a gesture sensor
2.Connect different microcontrollers wirelessly to exchange information
3.Read a file from SD card on the microcontroller and get the MP3 data using MP3 decoder
4.Display different screens according to the game level(Title screen, Arrows and leaderboards)
Project Objectives
1. Gestor Control: APDS-9960 gesture sensor on SJ2 board should respond to hand waving. I2C interface will be used for this sensor.
2. ZIGBEE wireless: UART interface used to connect the wireless devices, which will send information to other boards.
3. MP3 decoder: MP3 data will be fetched from mini SD card reader using SPI interface.
4. 64x64 RGB LED matrix: LED will be controlled by GPIO of SJ2 board. The LED will display game graphics.
5. 3D Printed enclosure: The system will be enclosed in a 3D printed enclosure.
Team Objectives
1.Learn and understand the APIs of the Real Time Operating System
2.Use different embedded protocol to interface the system
3.Learn to design a module and interface the modules by reading datasheets
4.Integration and testing to deliver the final product
5.Track and respond to the reported bug and document the bugs and solutions.
Team Members & Technical Responsibilities
- Jonathan Doctolero
- Gesture Sensor Driver
- Gameplay Development
- Enclosure Design
- Priyanka Rai
- RGB Matrix Driver
- Wireless Driver/Application
- Ravi Kiran Dendukuri
- PCB Design
- MP3 Decoder Design
- Yashwanth Kumar Nelakuditi
- PCB Design
- MP3 Decoder Design
Administrative Responsibilities
| Administrative Roles | ||||
|---|---|---|---|---|
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Jonathan Doctolero | |||
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Priyanka Rai | |||
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Ravi Kiran Dendukuri | |||
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Yashwanth Kumar Nelakuditi | |||
Schedule
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Bill of Materials (General Parts)
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Printed Circuit Board
Design & 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.
RGB LED Matrix
A 64 x 64 RGB LED Matrix will be powered up through a 5V/4A DC adapter and is interfaced with the board to play the game 'FOLLOW ME' with the background music. The matrix has 2 planes (upper and lower), both of which will be programmed separately. Planes are made by dividing 64 rows into 2 halves, i.e. first 32 rows in plane 1 and the remaining 32 rows in plane 2. Five signals (viz. A, B, C, D, and E) which are connected to 5 GPIOs of the SJ-2 board are used to select rows from each plane. R1, G1, B1 signals with 64-bit registers are used to address individual led from the selected row in plane 1. Similarly, R2, G2, B2 signals used to address individual led from the selected row in plane 2. A single clock is interfaced to these 6 64bit shift registers. Hence, at one clock signal, we fill and enable a column corresponding to two selected rows. Once the clocking and register shifting is done, the data need to be latched to the register which in turn enables the corresponding LED. Then the LATCH is set to mark end of the row and reset to move to next row. The output enable signal is enabled to push the data to the selected row. The output enable signal is disabled again to select the other row. All of these steps are repeated at very less time intervals so that the human eye perceives it as one complete frame (Persistence of Vision).
Pin Configuration
| Pin | Pin Description |
|---|---|
| R1 | Sets upper panel's Red data |
| G1 | Sets upper panel's Green data |
| B1 | Sets upper panel's Blue data |
| R2 | Sets lower panel's Red data |
| G2 | Sets lower panel's Green data |
| B2 | Sets lower panel's Blue data |
| A | Sets row bit 0 |
| B | Sets row bit 1 |
| C | Sets row bit 2 |
| D | Sets row bit 3 |
| E | Sets row bit 4 |
| nOE | Set to switch the LEDs off when transitioning from one row to the next |
| LATCH | Set to mark completion of one row |
| CLK | Set to access each pixel |
| GND | Ground pins to be connected with board's GND. |
Testing & Technical Challenges
Describe the challenges of your project. What advice would you give yourself or someone else if your project can be started from scratch again? Make a smooth transition to the testing section and describe 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.
LED Matrix: faulty matrix , needed to buy another one. Lessons: order the obvious component as soon as possible and test it.
- Measure the resistance between 5v and ground terminal
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 acknowledgment that you may wish to provide can be included here.
References Used
List any references used in project. https://www.prf.jcu.cz/generator-led-matrix/index.htm
Appendix
You can list the references you used.
