Underwater Photogrammetry Experiments with 123D Catch
David and the open source explorers at OpenROV try creating 3D Models with an AUV (autonomous underwater vehicle)
Technology
For Those About To Launch, We Salute You
Our latest Weekend Project will launch not one, not two, but ten model rockets simultaneously! Built around a 555 Timer IC and a few different types of launch switches, this project is ideal for rocket clubs and launch events.
Where’s The Logic In That?
An explanation of the 74HC32 integrated circuit, and the function of OR logic gates. Part of our series of Weekend Projects.
Electronotes Newsletter is a Wellspring of Music Synthesis Circuits
Electronotes is a newsletter on electronic music synthesis that was started in 1972 by Cornell EE professor Bernie Hutchins. It’s a great source for electronic music schematics and circuit ideas. Early contributors to the newsletter were people like Robert Moog and Don Buchla, and a lot of interesting modular synthesizers like the ASM2 are based […]
Homemade Motorcycle Brake Lights
As a motorcyclist, visibility is paramount to the safety of the rider. With this in mind, Pete Mills wired up his own super-bright brake light assembly using bright red LEDs. Not only are the lights powered by the onboard electrical system, but they can be toggled to either stay solid, or blink depending on the rider’s choice. This was done using an ATTiny85 microcontroller.
Solar Dune Buggy
Brothers Michael and Kenny Ham have a goal: to create cheap electric vehicles that get people interested in renewable energy.
Mechanical CPU-Simulating Wall Clock
Lior Elazary’s Mechanical CPU Clock intrigues me — it’s a clock that simulates the way a CPU works: For a CPU to do any meaningful work, it needs to be told what to do. This comes in the form of instructions. For this wall clock I will only concentrate on the hours to make things […]