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
Disney is being sued by the Michael Jackson estate for using fair-use clips in a biopic called "The Last Days of Michael Jackson" -- in its brief, the company decries "overzealous copyright holders" whose unwillingness to consider fair use harms "the right of free speech under the First Amendment."
This week, I sat down for an hour-long interview with the Yale Privacy Lab's Sean O'Brien (MP3); Sean is a frequent Boing Boing contributor and I was honored that he invited me to be his guest on the very first episode of the Lab's new podcast.
For seven years, Florida state inmates could buy a $100 MP3 player from Access Corrections, the prisons' exclusive provider, and stock it with MP3s that cost $1.70 -- nearly double the going rate in the free world.
We’ve all used Excel at some point in our careers, but chances are most of us have only scratched the surface of what this ubiquitous program can do. From automating simple tasks to presenting data through beautiful charts and PivotTables, Excel brings a ton of utility to the table that can make a huge impact […]
Traveling isn’t always the most comfortable experience, but at least you have your music to keep you company on those long flights. That is, until your chatty neighbor and that crying baby three seats over drown out your playlist. These Paww WaveSound 3 Noise-Cancelling Bluetooth Headphones block up to 20 decibels of audio, so you can […]
SEO can be a fickle creature, but it can work in your favor—you just need the right tools. When it comes to getting your site on that coveted first page of Google, SERPstash Premium simplifies the process with 21 user-friendly tools designed to break down your page’s performance and show you where you can improve. Lifetime […]