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Re: LEDs
I know you can commonly find LED strips that use shift registers to control them. (some just ON/OFF, some for RGB, and some even have a setup for PWM to get varying brightness and color). I believe you can get addressable modular LEDs that use I2C. Another lesser known/used technique for using straight digital IO is Charlieplexing.
Honestly I prefer Shift Registers, I feel they are the simpilest to work with, from my experience.
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 Programmer - A creature known for converting Caffeine into Code.
Studying Computer Science @ Louisiana Tech University
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2012-13: 3946 - Head of Programming, Electrical and Web
2014 - 3468 - Programming Mentor
2015 - Present - Lurker
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