Collaborate Disseminate
One of the fun things about “old school” computers is that it was fairly easy to get kids into programming them. The old Basic interpreters were pretty forgiving, and you …read more Continue reading Scratch Your Itch to Program a Microcontroller
Some of you probably know this already, but there’s actually more than one kind of electron microscope. In electronics work, the scanning electron microscope (SEM) is the most common. You …read more Continue reading Electron Microscope Conversion Hack
What do you do if you want a tiny little adjustable wrench? If you’re [my mechanics] you build your own. Where do you get the stock metal? Well, he started …read more Continue reading DIY Adjustable Wrench? Nuts!
Spectrometry is a well-known technique or, more correctly, a set of techniques. We usually think of it as the analysis of light to determine what chemicals are producing it. For …read more Continue reading RF Spectrometer Sees Inside
There was a time when one of the perks of having a ham radio in your car (or on your belt) was you could make phone calls using a “phone …read more Continue reading Retro Gadgets: The CB Cell Phone
The RCA CR-88 was a radio receiver made to work in top-secret government eavesdropping stations. As you might expect, these radios are top-of-the-line, performance-wise, at least when they are working …read more Continue reading Inside a 1940’s Spy Radio
If [Bob Dylan] had seen [Pgeschwi]’s bike chain clock, it might have influenced the famous song. The clock uses a stepper motor and a bike chain to create a clock …read more Continue reading The Times they are A-Chaining
If you’ve ever played around with macro photography, you’ve likely noticed that the higher the lens magnification, the less the depth of field. One way around this issue is to …read more Continue reading Better Macro Images With Arduino Focus Stacking
[Hank Green] posted an interesting video about the first liquid mirror telescope from back in the 1850s. At the time, scientists were not impressed. But, these days, people are revisiting …read more Continue reading Toxic Telescope Makes You Mad as a Hatter
We know many people who put much effort into building model train setups. But [Rambros] has an entire set 3D printed, and the files are open source, so you can …read more Continue reading I’ve Been Printing on the Dragon Railroad…