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Fun With Snap Circuits 5: Let There Be Light–The Sequel

November 8, 2011

“On life’s journey faith is nourishment, virtuous deeds are a shelter, wisdom is the light by day and right mindfulness is the protection by night. If a man lives a pure life, nothing can destroy him.”


In my previous post where I hacked the Spy Video TRAKR, I needed to test the program that I wrote using a Light Emitting Diode (LED) that I scavenged from an old computer. When I pressed button A the LED lit up, but when I pressed button B the LED did not light up. LEDs allow current to flow in on direction but not in the reverse direction. To understand why, build the circuits in projects #7 and #8:

Here’s some additional information about Light Emitting Diodes by Ariel Churi from Sparkle Labs:

Light Emitting Diode from Sparkle Labs on Vimeo.



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