User:Deanobijekwu/ENES 100/Snakehat

Write problem/project Goal
We are currently unable to directly discern an individual's emotions. We plan to make a device in the form of a snake-shaped "hat" with brain diodes.

My First Task
My first task for the weekend is to gather information on the instrumentation amplifier.

Summary of actual work over first weekend
"Research" went as planned. Nothing unexpected. Wikipedia/linked sources/various other sources/videos.

Week1 Narrative
I gathered information and found diagrams/did preliminary planning for the building of the instrumentational amplifier. Materials list drafted.

My Second Task
Start work building in amp.

Summary of actual work over second weekend
Large changes in project. Discovery of openeeg project; extremely relevant to what we're trying to do. The openeeg project is an amateur project for building a biofeedback machine. Will be finding more information/details

Week2 Narrative
Openeeg part sources:

electrodestore.com

The openeeg project is an entirely amateur and open source project. There are no warranties/guarantees. parts can be bought to various degrees, but ultimately, the majority of it must be built.

The electronics involved are silver plated electrodes which go through a protection circuit and then enters an instrumentation amplifier which both amplifies the signal from the electrodes, as well as cancels out low frequency hum noise. The signal then travels into a second amplifier where it's amplified again and then through a lowpass filter to filer out and irrelevant high frequency noise. The entire project can be built for ~$250; the price may fluctuate depending on what exact parts are used. There are several choices that have been made for software. and of course you can program your own.

My Third task
Contact team; work out specifics of our device itself

Summary of actual work over third weekend
How is what you did different than what you planned?

Week3 Narrative
Needed Materials list

The first source or our pulse sensor was out of stock.

New Source: http://pulsesensor.myshopify.com/collections/frontpage/products/pulse-sensor-amped

Schematic: http://pulsesensor.myshopify.com/pages/open-hardware

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Instrumentation amplifier schematic: http://commons.wikimedia.org/wiki/File:Instrumentation_Amplifier.svg

In-amp:

My Fourth task
Take over structural part on project/find a hat/design how to fasten all components

Summary of actual work over fourth weekend
How is what you did different than what you planned?

Week4 Narrative
Tell a detailed story describing what you did for your team over the weekend.

Complete Team Page
Fill out the Team Form (should have already copied the form, created the team page, linked to it and started filling it out).