Human Bicep Electrical Signal to LED:

This circuit was created to take an electrical input from a human bicep which would be used to turn on/off an LED light. My role was to build the main circuit components. I followed the procedures of previous labs and used our calculated values to build the bread board correctly. Additionally, I kept the circuit organized and kept track of the wire connections. The circuit was created by constructing and testing an instrumentation amplifier and a Low pass filter, and building a comparator circuit using a potentiometer.

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How the System Works:

The system receives an input signal due to some muscular activity. Then, it amplifies the input signal using a biopotential amplifier. This amplified signal then enters a low pass filter which isolates the meaningful data. Next, the comparator differentiates between the different output options. Option 1, if there is not muscular activity then the LED should be off. Option 2, if there is muscular activity, the bicep was flexed, then the LED should be on. 

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My Goal as a Future Engineer:

As a Biomedical Engineer that is interested in concentrating in instrumentation, this was a very beneficial project. The EMG project solidified my knowledge in circuits, sensors, and measurements as well as piqued my interest in bread boards and electrical circuits. I am particularly proud of my ability to assemble the whole circuit, as it took much trial and error before completing. As I have an interest in the cardiovascular system, I plan on applying what I learned from this project on future career projects. My goal is that in the future, I will aid in developing electrostimulation devices for the human body.