F16: Seismograph

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

Seismograph

Abstract

In recent years, news of an upcoming large scale earthquake in California has been increasing. Having a seismograph would allow us to directly see any seismic activity. In addition, by adding an LCD screen, we would be able to add plots of the data in a time series manner for any research purposes. Most importantly, the seismograph device would allow to help with search and rescue efforts. When a large scale earthquake is detected, it would allow a signal to be detected via your cellphone in order to ping your GPS location in case of a building collapse.

Objectives & Introduction

Our seismograph would help bring awareness to the realities of earthquakes in California. In addition, it has the possibility to help save lives by aiding in search and rescue efforts when a large earthquake does come.

• Create a working seismograph and store data onto a microSD card
• Write software to display data onto an LCD screen
• Add to software to send signals to cellphone via Bluetooth
• Write a small mobile application to receive data via Bluetooth

Team Members & Responsibilities

Both team members will be working on all areas of development with specific focuses as follows:

• Mina Yi
  • Focus on software
    • Display data on LCD screen
    • Mobile application to recognize signal
• Andrew Ahwal
  • Focus on hardware portion to build a working seismograph

Schedule

• Responsibility and leadership of the task is indicated by the Assignee.
  • However, it does not mean that they will be expected to complete the tasks alone.
• Subtasks are listed in the comments section and are numbered.
• Subtasks will be delegated as seen fit.
• Any deviation to the schedule due to technical issues will be covered under the Testing & Technical Challenges section.

NOTE: Documentation is not specifically listed in our project schedule. However, each task has a documentation phase before and after each task.

Task#	Start Date	End Date	Task	Assignee	Status	Date Completed	Comments
1	10/30	11/12	Order components	Both	Complete	11/6
2	10/31	11/7	Read datasheets & research	Both	Complete	11/7
3	11/6	12/1	Interfacing Bluetooth	Mina	Complete	12/17	1. Set up development environment 2. Create the mobile application 3. Interface SJOne board with the application 4. Send notification via bluetooth
4	11/6	11/17	Build Seismograph circuit	Andrew	Complete	Circuit 11/13	Expected circuit completion date: 11/14 Expected testing dates: 11/14 - 11/17
5	11/18	11/18	Progress update	Both	Complete	11/18	In class demo of our progress.
6	11/18	11/20	Interface seismograph circuit with SJOne board	Andrew	Complete	11/20
7	11/21	12/7	Integrate LCD screen with SJOne board & seismograph	Mina	Complete	12/17	1. Fetch data created by the seismograph 2. Display data on the LCD screen
8	12/7	12/20	Testing and tweaking finalized product	Both

Parts List & Cost

Part #	Part Name	Purchase Location	Part Specification	Quantity	Cost per item
1	Piezoelectric Vibration Sensor With Mass	wwww.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
5	1 nF Capacitor	HSC Electronics	NA	2	$0.12
6	47 nF Capacitor	HSC Electronics	NA	1	$0.12
7	2.2 μF Capacitor	HSC Electronics	NA	1	$0.12
8	10 μF Capacitor	HSC Electronics	NA	1	$0.12
9	10 kΏ Resistor	HSC Electronics	NA	2	$0.10
10	11 kΏ Resistor	HSC Electronics	NA	1	$0.10
11	100 kΏ Resistor	HSC Electronics	NA	5	$0.10
12	221 kΏ Resistor	HSC Electronics	NA	2	$0.10
13	22 MΏ Resistor	HSC Electronics	NA	4	$0.10
14	Diode	HSC Electronics	NA	1	NA
15	OPAMP	HSC Electronics	LN324N	1	NA
16	Twin Through-hole Protoboard	Fry's Electronics	NA	1	NA
17	Various wires	Fry's Electronics	NA	NA	NA

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 Design

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

Seismograph Circuit

Stage 2 Rectifying Circuit

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.

Flow chart that shows the LCD screen draw algorithm

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

Documentation Issues

One of the largest deterrents in our project was due to poor or little to no documentation.

Working with the ST7735

There were problems initializing the LCD screen since the documentation was not very helpful. In addition, the board was originally intended to be used with an Arduino so we had to port the Arduino code over to work with our board.

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

• Seismograph GitHub Link

References

References Used

List any references used in project.

Appendix

You can list the references you used.