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Author Topic: Magic LEDs  (Read 935 times)

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Offline wholderTopic starter

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Magic LEDs
« on: December 07, 2018, 12:30:14 am »
I've posted a YouTube video that shows how to program an Arduino to “Magically” switch an LED on and off by shining a keychain light at it. 

   

The video describes how the technique works for one LED as well as for a set of 8 LEDs, each of which can be switched on and off independently.  There also a bonus effect shown at the end of the video.  Complete source code is available for all 4 examples and can be downloaded from a web page that’s linked in the description for the video.  Enjoy!

Wayne
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Offline chris_leyson

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Re: Magic LEDs
« Reply #1 on: December 07, 2018, 01:28:51 am »
Thanks Wayne that's really neat. It would never have occurred to me to use a LED's junction capacitance to measure ambient light so I've learnt something new today, thanks. Given your YouTube video a thumbs up.
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Offline cdev

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Re: Magic LEDs
« Reply #2 on: December 07, 2018, 01:52:19 am »
Miraculoso!
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