Like pretty much all of us, [Andy Schwarz] loves RGB LEDs. Specifically he likes to put them on RC vehicles, such as navigation lights on airplanes or flashers and headlights on cars. He found himself often rewriting very similar Arduino code for each one of these installations, and eventually decided he could save himself (and […]
A CHROME EXTENSION FOR CONFIGURING RGB LEDS Read More »
If you can ride a bike with no handlebars, no handlebars, no handlebars, you can do just about anything. You can take apart a remote control, and you can almost put it back together. You can listen in on a two meter repeater and you can build a GPS module speedometer. That’s what [Jeremy Cook] did
THIS GPS SPEEDOMETER HANGS OFF YOUR HANDLEBARS Read More »
OpenScan has created a low-budget, high quality DIY 3D scanning system, that is fully open-source and modular and available to purchase in a variety of different packs depending on your needs from control board to full system. Based on Photogrammetry, the 3d Scanner is compatible with various cameras, so that simple smartphones or DSLR can
Arduino 3D scanner and photogrammetry rig €150 Read More »
Photographic slides were popular in the middle part of the 20th century, but are long forgotten now. If you’ve found a handful in a dusty attic, you might consider sending them away to be digitized professionally, or using a flatbed scanner at home. [Bryan Howard] found himself with over 200,000 slides, however, so that just
A HIGH-SPEED SLIDE SCANNER BUILD Read More »
If you mention a clock that receives its time via radio, most people will think of one taking a long wave signal from a station such as WWVB, MSF, or DCF77. A more recent trend however has been for clocks that set themselves from orbiting navigation satellites, and an example comes to us from [KK99].
GPS Self-Adjusting Clock With An E-Ink Display Read More »
Potentiometers, or variable resistors, are a standard component that we take for granted. If it says “10k log” on a volume pot, than we fit and forget. But if like [Ben Holmes] you are modelling electronic music circuitry, some greater knowledge is required. To that end he’s created a rig for characterising a potentiometer to produce
CHARACTERISING A POTENTIOMETER WITH A STEPPER MOTOR Read More »
Over the years we’ve seen a number of homebrew 6502 computers assembled with little more than a breadboard, a sack full of jumper wires, and an otherworldly patience that would make a Buddhist Monk jealous. Anyone who takes the time to assemble a fully functional computer on a half-dozen breadboards lined up on their workbench
A NEARLY PRACTICAL 6502 BREADBOARD COMPUTER Read More »
After covering a few of his builds at this point, we think it’s abundantly clear that [Igor Afanasyev] has a keen eye for turning random pieces of antiquated hardware into something that’s equal parts functional and gorgeous. He retains the aspects of the original which give it that unmistakable vintage look, while very slickly integrating
VINTAGE CAMERA FLASH TURNED OLED DESK CLOCK Read More »
That first glimpse of a child in the womb as a black and white image on a screen is a thrilling moment for any parent-to-be, made possible by several hundred thousand dollars worth of precision medical instrumentation. This ultrasound machine cobbled together from eBay parts and modules is not that machine by a long shot, but it’s
SIMPLE ULTRASOUND MACHINE SHOWS THE SKELETON LURKING INSIDE US ALL Read More »
The common magnetic loudspeaker is, fundamentally, a fairly simple machine. A static magnetic field is generated by a permanent magnet, and a membrane is mechanically connected to a coil. When a varying electrical current is passed through the coil, this causes the coil to move due to the magnetic field, vibrating the membrane and producing
A MOSTLY 3D PRINTED SPEAKER Read More »
