F15: Smart Car

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.

Project Title

Smart Car

Abstract

A smart car with three wheels will be designed to have the capability of following high contrast lines. Options for the lines include using black Sharpie, black duct tape, and white duct tape. Afterwards, it will send back a CSV file format with 0s and 1s. 1s denote that the car was traveling in the area of the map. Using a peripheral compass, the car will also be able to draw a map of the route that it took.

Objectives & Introduction

Our objectives include the following:

• Self-driving car that is able to follow a line
• LED matrix that can draw out the path the car is taking

Team Members & Responsibilities

• Steven Hwu
  • B.S. Computer Engineering
• Helen Tsui
  • B.S. Computer Engineering

Schedule

Week#	Date	Task	Actual
1	10/23	Complete project abstract	Complete
2	10/30	Gather parts	Complete
3	11/06	Program compass	Complete
4	11/13	Program LED matrix	Complete
5	11/20	Program wireless functionality	Complete
6	11/27	Build car	Complete
7	12/04	Put all the pieces together	Complete
8	12/11	Testing	Complete

Parts List & Cost

Quantity	Description	Price
2	SJ-One development board	$80 ea
1	Cardboard	$0 ea
1	White duct tape	$4.52 ea
1	White duct tape	$4.52 ea
1	Servos	$4.47
1	Compass	$
2	Motors	$80~
2	LED matrix	$24.95 ea
2	Photo transistors	$1.2 ea
2	LEDs	$24.95 ea
		_______
	Estimated total	$

Design & Implementation

Hardware Design

Discuss your hardware design here. Show detailed schematics, and the interface here.

Compass

The compass uses SPI as the communication protocol. x, y, and z were able to be read from the compass depending on its orientation. After one of the SJSUOne boards reads the x, y, and z values from the compass, it sends the values wirelessly to the other board to determine which LEDs to light up.

LED Matrix

The purpose of the LED matrix is to display the path that the car is traveling. It uses SPI as its communication protocol.

SJOne

The SJOne the microprocessor used for this project. The compass and LED matrix were interfaced with the SJOne board. The compass used I2C while the LED matrix used SPI. The wireless functionality of the board was also utilized to in order to send information from one board to another.

Hardware Interface

Communication protocols used:

1. I2C - HMC5883L Compass
2. SPI - LED matrix

Software Design

The software design utilizes drivers such as SPI and I2C. In addition to the drivers, Nordic wireless functionality was programmed.

Implementation

System Startup

Send Compass Values

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:

Issues Faced

Wireless communication and LED Matrix The LED matrix that was used was programmed using SPI0. However, it turns out that SPI0 is shared with the wireless communication API. To fix the issue, the LED matrix was reprogrammed on SPI1.

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

• Sourceforge Source Code Link

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.