My Techno heart makes music based on my hand and lights up to my heart beat. Using six ultra-sonic distance sensors within it makes the music, and using Pulse heart rate sensor it beats the lights :)
I 3D Printed the heart case in parts. Put the ultra-sonic sensors in the six 'window' gaps inside the case, placed the pulse heart rate sensor, placed the LEDs, covered with felt and there it is!
Details, Video and code can be found from my blog
http://thepositronicbrain.blogspot.com/2014/10/my-techno-heart.html
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