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In order to more accurately take electrical measurements in the brain, a controller device is needed to independently control current on 16 electrodes in a multiple-electrode array. The device must use parallel logic from a computer to control the current. The device must be isolated from electrical noise so the measurements are accurate.
We have been assembling the prototype. The transformer is currently hooked up for ~500 V because that is all the transistors will take. Testing will likely occur after the final presentation
| Week | Reporting Period Beginning | Activities |
|---|---|---|
| 1 | January 20 | Divided into teams and selected our project. Met with client and began literature research. |
| 2 | January 27 | Met with Prof Williams and continued literature research. |
| 3 | February 3 | We are currently arranging a meeting with Dr. Kurt Kaczmerek. |
| 4 | February 10 | We have met with Dr. Kaczmerek, and we have a much better idea about the design of current sources. |
| 5 | February 17 | Split into smaller teams to increase efficiency. Danielle and Erik will focus on current waveform generation, while Anthony and Martin will focus of power supply and optical isolation. |
| 6 | February 24 | Gave our midsemester presentation. Divided the portions of the written report and began to construct it. |
| 7 | March 3 | Finished written report, submitted copy to both our client and advisor. Updated website and took a quiz regarding our ethics. |
| 8 | March 10 | Work on Design/Spring Break |
| 9 | March 17 | Discussed current posisitons of both teams. Decided that we would aim to have one working channel by the end of week 11 (April 7th). |
| 10 | March 24 | Erik and Danielle began to order circuitry parts needed for the current control. Marty and Tony met with a WEMPEC grad student and with Burke O’Neil to discuss the power supply and have now focused their design toward using an AC/AC transformer. The team attended Prof. Beebe’s lecture regarding the impact of engineering solutions in global and societal perspectives |
| 11 | March 31 | Are working on obtaining all need circuitry components, and will begin construction of the first channel as soon as possible. |
| 12 | April 7 | Met more with Burke O’Neal. We think we have a design that will work now. We are going to get the needed parts and hopefully begin construction very shortly. |
| 13 | April 14 | Erik and Danielle continued to work on the circuitry for the current delievery, and are making some progress. Marty and Tony have most the parts needed for the supply voltage portion of the project, but are still looking for connectors. |
| 14 | April 21 | Written Report handed in. Erik and Dani are sodering together a channel, while Tony and Marty are putting the voltage source components together and placing them into the steel box. |
| 15 | April 28 | Finished up prototype, worked on/gave final presentation. Will arrange debriefing with Prof. Tompkins. |
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Mid-Semester Presentation (Feb 24 2006, 165 kb) |
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Mid-Semester Report (Mar 3 2006, 366 kb) |
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Final Report (Apr 28 2006, 441 kb) |
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Product Design Specifications (May 2 2006, 80 kb) |
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Final Presentation (May 7 2006, 265 kb) |
