S17: Boom-Z Equalizer

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

Boom-Z Equalizer

Abstract

The purpose of this project is to allow the team to experiment with a sound reactive project. The team will use a specialized IC to convert the input audio signal into a digital signal that can be parsed by the SJSUone board. The team will also create the LED array grid that will be used to display the waveform/frequency representation of the audio signal. The final project should be able to take an input audio signal (using a regular audio cable/jack) and display some kind of frequency representation using the LED array grid.

Objectives & Introduction

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Team Members & Responsibilities

• David Bui
• Marvin Flores
• Adam Iglesias
• Mina Yi

Schedule

Week#	Date	Task	Actual
1	3/19	Delegate project tasks Prepare wiki Research implementation options Choose/order parts	Delegate project tasks - done Prepare wiki - done Research implementation options - done Choose/order parts - in progress
2	3/26	Complete software design phase Finish first draft diagrams Prepare freeRTOS tasks Read datasheets for the parts Begin PCB design	Complete software design phase - in progress Finish first draft diagrams - in progress Prepare RTOS tasks - in progress Begin PCB design - in progress
3	4/2	Implement software design Implement drivers Integrate LED matrix with its driver module Integrate graphic equalizer with SJSUone board and audio input Send PCB to be made	Implement software design - in progress Implement driver for MSGEQ7 - done Integrate LED matrix with its driver module - not yet started Integrate graphic equalizer with SJSUone board and audio input - done Send PCB to be made - in progress
4	4/9	Integrate LED matrix with the equalizer module via SJOne board	Reordered LEDS to be used. Found out LEDS used non-standard communication protocol. Soldered components to PCB. Implemented software design Equalizer part - done LED driver - in progress
5	4/16	Testing and Debug	Tested PCB (equalizer) Started interfacing new LEDs (SPI protocol) Started designing PCB for LEDs LED driver - in progress
6	4/23	Testing and Debug Complete project report	PCB design LED - in progress LED driver - in progress task communication between Equalizer and LED driver - done
7	4/30	Final project presentation	started LED prototype board (for backup)
8	5/7	Ready for Demo	LED PCB design finished and sent to shop
9	5/14	Ready for Demo	LED PCB received and started soldering
10	5/21	Ready for Demo	Final Assembly/Integration of LEDs and Disaply Box

Parts List & Cost

Bill of Materials for Audio Frequency Generator

#	Name	Purchase Location	Description	Quantity	Cost
1	Piezoelectric Vibration Sensor With Mass	www.sparkfun.com	Sen-09197	1	$2.95
2	MicroSD	Frys Electronics	16GB	1	$9.99
3	Adafruit 1.8" Color TFT Shield w/microSD and Joystick	www.Amazon.com	NA	1	$34.99
4	HC-06 Bluetooth Module	www.Amazon.com	NA	1	$8.99

Bill of Materials for LED Matrix

#	Name	Purchase Location	Description	Quantity	Cost per item
1	LED Strip	Amazon	APA102C LEDs	1	$29.88
2	PCB	Bay Area Circuits	9.6" x 5"	1	$30
3	Shadowbox	Michaels	10" x 10", 4.5" depth	1	$32.99
4	Thin Plywood	Home Depot	9.5" x 9.5"	1	Varies
5	Power Supply	Amazon	Mean Well 5v 5A power supply	1	$13.22
6	3 Pronged Power cord	Home Depot	Husky 8ft 3 pronged power replacement cord	1	$9.97

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.

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.

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:

My Issue #1

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Conclusion

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Project Video

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Project Source Code

• Sourceforge Source Code Link

References

Acknowledgement

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References Used

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Appendix

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