Jeremy Lee
Contributing Writer

Articles

How Sonic Tractor Beams Work

This practical tractor beam uses ultrasonic waves to levitate small spheres at short distances.
January 19, 2017 in Technical Articles
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ultrasonic Sound Generator

Engineer Spotlight: Tanky Drone’s Bogdan Ryabyshchuk Talks Crowdfunding and Racing Drones

We talk with Tanky's founder about nigh-invulnerable 3D-printed armor, how to destroy a GoPro, firmware and batteries, who is the best pilot, and the inevitable power-to-weight tradeoff of flying things.
November 18, 2016 in News
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engineer spotlight kickstarter drones interview tanky

Build Your Own LED Saber—Assembly and Hilt Construction

In the final installment, we build our light-blade and assemble the electronics into the hilt.
October 21, 2016 in Projects
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arduino led strip lightsaber pvc system assembly

Build Your Own LED Saber—Firmware, Microcontroller, and Testing

In part 3, we compile the firmware and build the controller at the heart of the Saber, then do initial testing and diagnostics.
October 20, 2016 in Projects
Tags:
arduino led strip lightsaber lipo battery lithium polymer battery mpu-6050 pro micro battery power rotary switch

Build Your Own LED Saber—Audio and Power Systems

In part 2 of the LED saber project, we'll assemble the power and audio systems.
October 19, 2016 in Projects
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arduino lithium-ion battery led strip lipo battery audio amplifier class d amplifier lipo charger battery voltage monitor battery eliminator circuit bec dc-dc converter

How to Build the Brightest LED Saber in the World

The brightest blade in the world. Fluid sound effects generated in real time. Any colour, changeable on the fly. If you want to know what it feels like to hold a Lightsaber, this project is the closest you can get today.
October 18, 2016 in Projects
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arduino digital signal processing power lightsaber lipo battery lithium polymer battery led strip polycarbonate