Collaborate Disseminate
The crystal radio is a time-honored build that sadly doesn’t get much traction anymore. Once a rite of passage for electronics hobbyists, the classic coil-on-an-oatmeal-carton and cat’s whisker design just …read more Continue reading Fail of the Week: The SMD Crystal Radio That Wasn’t
A newly licensed amateur radio operator’s first foray into radios is likely to be a VHF or UHF radio with a manageable antenna designed for the high frequencies in these …read more Continue reading DIY Loading Coil Shortens Antenna Lengths
Coil winders are a popular project because doing the deed manually can be an incredibly tedious and time consuming task. After building one such rig, [Pisces Printing] wanted to find …read more Continue reading Arduino-Controlled Coil Winder
If there’s something more tedious than winding coils, we’re not sure what it is — possibly rolling and wrapping coins; that’s really a bother. But luckily, just like there are …read more Continue reading All-Mechanical Coil Winder is a Scrap-Bin Delight
Anyone with more than one cat can tell you that the joy mischief they bring into your life is much more than twice that of a single cat. And if …read more Continue reading Cat Feeder Depends on RFID to Keep the Peace at Dinnertime
Like the incandescent bulb before it, the compact fluorescent (CFL) bulb is rapidly fading into obscurity as there are fewer and fewer reasons to use them over their LED successors. …read more Continue reading New Possibilities from Fading Lighting Technology
Surface mount components have been a game changer for the electronics hobbyist, but doing reflow soldering right requires some way to evenly heat the board. You might need to buy …read more Continue reading Internal Heating Element Makes These PCBs Self-Soldering
Admittedly, not a lot of people have a regular need to varnish coils. It’s mainly something that Tesla coil builders and other high-voltage experimenters are concerned with. But since that …read more Continue reading Junkbox Build Keeps Tesla Coils Perfectly Varnished
As ferrite technology has progressed into a mastery of magnetic permeability, the size of inductors has gone down to the point at which they are now fairly nondescript components. There …read more Continue reading Beautiful Inductors, Now Not Such A Lost Art
[mircemk] is quite a wizard when it comes to using coils of wires in projects, especially when their application is within easy-to-build metal detectors. There are all kinds of ways …read more Continue reading Metal Detector Gets Help From Smartphone