Make: Kit Reviews

If you want to get into 3D printing but don’t know where to start, the MakerBot Thing-O-Matic Kit is the way to go. It’s a complete kit, so you need no additional parts, and a large user community can back you up if problems pop up (not to mention Thingiverse, where you can find awesome […]

Tools & Workshop: 3D printing, makerbot, Tools, Workshop

The Rainbow Cube is a nerdy but gorgeous accent light consisting of a 4×4×4 cube of red-green-blue LEDs. Depending on how it’s programmed, colors appear to move, pulse, or wash through the cube in all directions, which is fascinating to watch. The LEDs connect to the PCB base via an ingenious structure consisting of thin […]

Electronics and Controllers LEDs: electronics, LEDs

Quadcopters rely on computer stabilization to fly. They can be radio controlled, but with an onboard computer, why not let it fly itself? The community at DIY Drones developed the open source ArduPilot Mega (APM), an Arduino-based autopilot that lets you control multi-rotor (and other) aircraft autonomously, or via R/C. The ArduCopter 3DR Quad Kit […]

Radio-Controlled Vehicles: Arduino, drones, helicopter, quadcopter, RC, robot

Whether your motivation is the environment, the economy, independence, or you simply despise the oil companies, converting your diesel vehicle to run on waste vegetable oil (WVO) can truly be a rewarding experience. (You can get WVO free from restaurants, preferably higher end. Luckily for me, my brother-in-law is a head chef, and he has access to WVO.) […]

Wheels: automotive, cars, engines, green conversion, Wheels

Speaker design master Curt Campbell has created several dream kits for the audiophile, including the TriTrix. Featuring two 5.25″ Dayton Audio woofers and a single tweeter in MTM format, the final product has an easy, 8Ω load that can be used for audio or home theater systems. The transmission line kit includes precision-cut MDF for making the cabinets, […]

Audio Gear: audio, music, speakers

I’ve been living car-free for 12 years. When I first saw Xtracycle’s cargo bike conversion kit, I was impressed by the broad utility of the design; it can be used to haul cargo and also passengers. I decided to build the ultimate people-and-stuff hauler so I could pick up friends who don’t bike and we could […]

Wheels: bicycles, conversion, Wheels

Many middle-aged DIY enthusiasts have constructed a crystal radio set; it’s such a joy to pull radio signals out of the ether using only the radio signal itself for power. Unlike traditional crystal sets, the XS-402 uses a molded, high frequency choke, eliminating the frustrating coil-winding process, and features large solder pads, great for learning to […]

Audio Gear: audio, crystal radio set, family, music, retro

Hobbyists are rediscovering the appeal of classic microcomputers from the 70s and early 80s, eager to tinker with computers at their fundamental level. Vince Briel designed the Replica I with permission from the Apple I’s original creator, Steve Wozniak. He sells it assembled ($199), as a kit ($149), or just the motherboard and specialized chips ($79). (Alternatively, […]

Electronics and Controllers: Apple, electronics, homebrew computers

Here’s an easy-to-build robot base that combines a custom Arduino development board with inexpensive motors and tank-style tracks. It even comes with its own lithium polymer power pack and self-charging circuit, so you don’t need to add batteries. To construct the DFRobotShop Rover you have to first assemble the twin motor gearbox and rubber treads […]

Robotics: Arduino, robotics, robots