Master maker Tim Jacobs created a fantastic business card that's actually a Stylophone synthesizer complete with MIDI capabilities. It's based on the original 1967 Dübreq Stylophone, a small synthesizer played by touching a built-in stylus to the metal keyboard. The Stylophone was famously used on David Bowie's "Space Oddity" and Kraftwerk's "Pocket Calculator."
From Jacobs' project page about his StyloCard that ended up costing a bit more than $3 each:
Printed Circuit Boards as a business card are a great gimmick. I'd seen ones with USB ports etched into them, which enumerate as a keyboard and then type a person's name or load up their website. It's just about possible to build them cheap enough to hand out as a business card, at least if you're picky about who you give them to.
A couple of years ago I took a stab at making one for myself, but I didn't want it to be pointless. I wanted it to do something useful! Or at least entertain someone for longer than a few seconds. I can't remember quite how I got the idea of making a MIDI-stylophone, but the idea was perfect. A working midi controller, that's unique enough in its playing characteristic to potentially give some value, while at the same time costing no more than the card would have done otherwise, since the keyboard is just a plated area on the PCB, as is true on the original stylophone.
If you do soldering work, I recommend getting a pair of these micro flush cutters. They’ll cut copper wires flush with the blob of solder, making your work look tidy.
TheBackyardScientist built out a 200 watt laser and mounted it on the roof of his car. In his YouTube description, he wrote three paragraphs about why this experiment did not endanger any airplanes. Previously, he built a handheld 40 watt laser blaster:
Three years ago, Ian Davis was diagnosed with a cancer that weakens the bones. Shortly after, the engineer had an accident in his machine shop that resulted in physicians amputating four fingers on his dominant hand. “When I was still in the hospital I started designing a prosthetic hand,” Davis told KOBI News last year. […]
From ordering from Amazon to paying bills over the web to something as simple as bottled water, we’re all hooked on modern convenience. We can’t help it. There are just too many modern world advances that save us too much time not to become a creature of comfort and go the easy route. Even if […]
No matter whether you go into the office or work from home, whether you roll out of bed at 5 a.m. or never get up before 9, we all agree a day can on how you feel first thing in the morning when you wake up. If you wake up feeling groggy or out of […]
The aluminum can is a great invention. And for 60 years, it and its crafty little addition, the pull tab, have made transporting and drinking all of our favorite beers, soft drinks and other beverages about 1,000 percent easier. Of course, evolution continues — and even an innovation as awesome as the aluminum can is […]