P08009: Audio Memo Device - Phase II

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Table of Contents

1 P08009: Audible Memo Device - Phase II
2 Mission Statement
- 2.1 Key Issues
3 Senior Design I Deliverables
- 3.0.1 Weeks 1-5
- 3.0.2 Weeks 6-11
4 Senior Design II Deliverables

P08009: Audible Memo Device - Phase II

This project is a lightweight clipboard-size device that will easily allow a blind person to record, and play back, at least 64 audible memoranda messages with categories such as Appointments, Special Dates, To-Do List, and etc. The user interface must be simple and easily navigated by sense of touch. The design must assume that the user suffers some degree of neuropathy in the fingertips.

Project Family : Assistive Devices

Track : Assistive Devices/Bioengineering

**Staffing**
Team Member	Discipline	Role / Skills	Email Address
George Slack	EE	Faculty Guide	gbseee@rit.edu
Tala Hopkins	Sponsor	Primary Customer	talamark@rochester.rr.com
Mark Hopkins	EE	Faculty Consultant	maheee@rit.edu
Alex Gorevski	CE	Team Member	atg2472@rit.edu
Loic Hureau	EE	Team Member	lxh3652@rit.edu
Jim Varghese	EE	Team Member	jav9244@rit.edu
Jon Gosliga	EE	Team Member	jgg0433@rit.edu

Mission Statement

The mission of this project is to build on the development of P07306 and finish the implementation that had intended to have done. Currently, there are several key issues we will be working on.

Key Issues

The analog to digital conversion is insufficient in the current design and will require an entire overhaul to get the device to function as it should.
- Steps are being taken to replace the Atmel chip to determine if this will solve the problem of the "mystery output" (The same few values are always recorded, nothing more, nothing less.)

The audio input circuit has some power and current issues.
- The analog signal that is coming from the microphone is not the correct signal that should be going into the Atmel chip. This could have caused it to burn out and give us the "mystery output" we are seeing.

The audio output circuit has some power and current issues.
- The volume knob does not seem to amplify the volume as it should. You cannot hear the circuit at all when the volume is very low. We will be working on improving the output volume range

The device needs to be synced up to a real-time clock to properly output the current day for the memo and keep track of the time in the outside world.
- The current device has an internal clock set up, however, there is no programming in place to set the current time and date.

There must be at least sixty seconds of available record-time for each memo.
- The current design allows for sixty seconds of available record-time for each memo, as well as 20 seconds of record time for each future memo; however, the way that this is implemented in code is a bit obfusctaed, and will be cleared up with a better design throughout the project.