Ben sez, "My 9 year old wanted to make a lightsaber for his monthly science project and Hallowe'en costume so I designed a quick project at his level. I documented the project on my website, and I think it turned out really well. The lightsabers are less than $15 each in parts and only take about an hour or two to assemble."
In this post, I am only showing the base of the lightsaber. It's quite straightforward. I am using four super bright LEDs from Sparkfun, two 220 ohm resistors, a 9V battery, and a switch. For the housing, I cut down some PVC pipe and bought some fittings for the end. The most expensive piece of equipment is the switch at about $4. The entire lightsaber comes in under $10.
As an exercise, I had Devin (the 9 year old) use this website, which generates a circuit and the necessary resistors for a given number of LEDs. It's a good tool and perfect for a child with very little knowledge of Algebra. I'll include a schematic of the LED circuit below. I have also included pictures from throughout the project.
A Finished Lightsaber
The Electronic Frontier Foundation has just filed a lawsuit that challenges the Constitutionality of Section 1201 of the DMCA, the “Digital Rights Management” provision of the law, a notoriously overbroad law that bans activities that bypass or weaken copyright access-control systems, including reconfiguring software-enabled devices (making sure your IoT light-socket will accept third-party lightbulbs; tapping […]
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The Bookworm Rug (100% woven polyester) come in 2′ x 3′ ($28), 3′ x 5′ ($58) and 4′ x 6′ ($79), and feature a selection of spines from some rather good books, including Iain Banks’s debut “The Wasp Factory” some Virginia Woolf, Charles Bukowksi and Haruki Murakami. (via Bookshelf)
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