Hardware build: CRC calculation

CRC (cyclic redundancy check) involves some intimidating math. But it turns out that it can all be done with some fairly simple hardware. In this video, I build the hardware to compute and verify CRCs. Previous video on CRC theory is here: https://youtu.be/izG7qT0EpBw

Code from this video: https://github.com/beneater/error-detection-videos

Hardware used in this video (affiliate links):
4x Breadboards: http://amzn.to/2uXgIVO
2x Arduino nanos (link is for a 3-pack): https://amzn.to/2JI5fDi
2x 16x2 LCD panel: https://amzn.to/2zKyHVo
Resistors http://amzn.to/2u24Wwm (though obviously you don’t need the whole kit):
~40x 220Ω-470Ω or so (for current-limiting LEDs & LCD backlight)
5x 100kΩ
32x Yellow LEDs: http://amzn.to/2wjSPHn (link is for 25 pack)
4x 74HC273: https://amzn.to/2un5WJp http://bit.ly/2KX740P
2x 74HC86: https://amzn.to/2NMkJFE http://bit.ly/2KVxU9l
Wire: http://amzn.to/2uU3D1b http://bit.ly/2KX9AE2

Support these videos on Patreon: https://www.patreon.com/beneater or https://eater.net/support for other ways to support.

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Special thanks to these supporters for making this video possible:
Ben Dyson
Ben Kamens
Ben Williams
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Eric Dynowski
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Johnathan Roatch
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Mark
Michael Burke
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Nick Wrightsman
Old Lion
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SonOfSofaman
...
https://www.youtube.com/watch?v=sNkERQlK8j8