The experiment demonstrates diffusion of potassium permanganate. The water is room temperature and still (not moving).
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https://www.youtube.com/watch?v=DHzfIB53nfU
On August 1st, 2015, we headed to the brand new littleBits Store in New York City. It's absolutely awesome. We had a great time. Staff was wonderful. My 5 yr old loved it to "bits".
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https://www.youtube.com/watch?v=UB53EVfmjLQ
I needed to make an automatic wave in response to someone waving at it. I used an ultrasonic and a servo. I ran out of AA batteries so I had to us a 9V with some wire clips and a switch.
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https://www.youtube.com/watch?v=UE90vb02TTc
The codeybot was in a giving mood so it put on a costume and went on a little adventure.
Music from:
Silent Night Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/
http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100075&Search=Search
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https://www.youtube.com/watch?v=ani8VK7N66Y
A quick video on turning an altoids tin into a travelling container for a lego family. Travelling Gnome style.
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https://www.youtube.com/watch?v=GoGZWEloCu4