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This Propeller based heart project demonstrates how a heart actually works. The board looks great and the shape is heart shaped like a real heart (not the shape of the valentines chocolate boxes).
Thanks for sending this in Jim.
“This wearable LED heart simulator pendant was inspired by my work as a cardiovascular surgical nurse as well asmy love of electronics. Â It simulates the electrical activity of 17 different rhythms and when paired with the heart backplane, it becomes an audio and pulse simulator as well.”