Exciting News on the Circuit

We can get a signal from a person! Well... kind of. See the series of pictures below for what I mean:

The circuit in its current form, color-coded to indicate how we will modularize it.













The signals shown above were generated using pennies as leads. One penny was placed on the "patient's" chest, near the heart, and the other was held in the "patient's" hand. The figure on the left shows the signal detected by the oscilloscope when the leads were not in place. The signal on the right shows the signal detected when the leads were on the chest and hand, respectively. While these results are exciting, it requires a lot of trial-and-error of lead placement. Perhaps this finicky-ness will improve once we attach our own leads and use conducting gel.