PROJECT POST #4
Project Title: Vis Hat
Project Team: Lydia, Fu, Jay, Sharon
Weekly Accomplishments:
Lydia:
- Researched: data collection tests/experiments to detect data quality and collection; fNIRS data collection and analysis software; prefrontal cortex data and emotional correlation; applications for fNIRS testing to come up with other possible applications for the final project presentation
- Started drafting a testing experiment procedure
- Downloaded brain data analysis and gathering software, researching this and how to use it
- Starting to draft prototype designs for 3D printed component
Fu:
- Hardware testing, both emitters and photodiodes.
- Wiring through breadboard, debugging and checking circuit design.
- Checking the photodiode analog reading works.
Jay:
- Power to both emitter and sensor
- Started on code for analog reading from the sensor
- Read signal through finger to complete proof of concept (detect signal passing through skin, blood and bone)
Sharon:
Images:
The following images show the actual testing circuit for the emitters and sensor, with a quick note about the diagram of the testing circuit.
Material List:
| title/link | # needed | price/unit | notes | shipping and tax | TOTAL PRICE: |
| arduino due | 1 | 34.43 | 34.43 | ||
| NPN transistor | 1 | 5.99 | this one unit contains ~200 resistors | 5.99 | |
| 730nm emitter | 2 | 8.61 | 9.54 | 26.76 | |
| 850nm emitter | 2 | 1.46 | 2.92 | ||
| 850 max nir detector/sensor | 2 | 5.37 | 9.02 | 19.76 | |
| bluetooth | 1 | 28.95 | RN41XVC (with chip antenna) | 8.81 | 37.76 |
| 850nm emitter | 2 | 1.46 | To account for trial and error hardware testing | 7.99 | 9.45 |
Project Concerns:
One potential concern might account for how much troubleshooting we will have to do with planning out and executing hardware and software. Considering we only have 5 weeks left, we might want to come up with additional plans for the application of the final project presentation. Below are a few initial ideas, but we may add to this list in the future. This concern isn’t too pressing now, as we have a few more initial technical aspects to develop, but initializing these ideas now could be a good idea and as our project continues to progress, the ideas could help how we navigate things in the future.
A folder in our group’s shared google drive has been created to come up with additional potential backup plans. So far, we are on track and excited about our progress so we are planning on following through with our plan as is.