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Super Simple iPod FM Transmitter


FM transmitters can be complicated to build, but not this one — it's about the easiest you can possibly make. And though the science of radio is well understood, there's a magical, emotional quality about it that we don't often stop to appreciate. Building your own radio receiver — or... Read more »

License Plate Guitar

license plate guitar

Continuing the tradition of homemade resonator guitars, follow along as we build a License Plate Guitar. A discarded vehicle's license plate will serve as our metal resonator top. This will be mounted atop a soundbox custom-fitted for the license plate, and the build completed with a hand-wound pickup, bridge, nut,... Read more »

Glow Plug 3D Printer Extruder


Want to upgrade or customize your 3D printer? Build this robust extruder using a handful of tools, one online parts order, and a trip to the auto-parts store. For a heater, it uses a $10 glow plug from a diesel engine — and it performs as well as commercially available... Read more »

Wear Your Heartbeat with a Pulse Sensor and Weekend Projects


The Beatband Sleeve joins a long list of projects attempting to read the human-mechanical heartbeat and visualize it as an electrical signal. Whether using midi controllers or operational amplifiers or infrared technology (and more recently IR in combination with an op-amp), makers love wearing their heartbeats as pendants or simply... Read more »

Beatband Sleeve


Build an Arduino clone using the MintDuino and then program it to visualize your heartbeat in combination with the Pulse Sensor AMPed. The five LEDs mounted to the lid of the tin will flash in sync with your heartbeat's rhythm. Does your heartbeat speed up when you don't tell the... Read more »