Table of Contents
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
|Team Member||Discipline||Role / Skills||Email Address|
|George Slack||EE||Faculty Guidefirstname.lastname@example.org|
|Tala Hopkins||Sponsor||Primary Customeremail@example.com|
|Mark Hopkins||EE||Faculty Consultantfirstname.lastname@example.org|
|Alex Gorevski||CE||Team Memberemail@example.com|
|Loic Hureau||EE||Team Memberfirstname.lastname@example.org|
|Jim Varghese||EE||Team Memberemail@example.com|
|Jon Gosliga||EE||Team Memberfirstname.lastname@example.org|
Mission StatementThe 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.
- 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
- 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
- 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.
Senior Design I Deliverables
Design Presentation (11-15-07) (MPEG Available upon request)
Senior Design II Deliverables
Test Plan Documentation and Results
- Software Test Plan (DOC) (2-24-08)
- Software Test Plan Results (XLS) (2-24-08)
- Hardware Test Plan (DOC) (2-26-08)
- Hardware Test Plan Results (DOC) (2-26-08)
Configuration Documentation (Tutorials)
- Pre-Generated Code WITHOUT DEBUGMODE (ZIP) (run for speed)
- Pre-Generated Code WITH DEBUGMODE (ZIP) (run for test)
- Use this when testing all of the key functionality
- Tests the clock-chip's ability to cycle through days. Also tests for leap year (2008 Feb)
- Results when leaving Hyperterminal on for 8 minutes.
- AT91SAM7SE CD-ROM Image (Other, updated 04/07) (191.6 MB)
- Install files for the AT91 ISP. Includes SAM-BA package.