Do you calibrate your digital meters? Most of us don’t have the gear to do a proper calibration, but [Mike Wyatt] shares his simple way to calibrate his DMMs using a precision resistor ...

Using a Class-E Tesla coil with 12 turns on the primary and 8 turns on the secondary and a 12 volt input he can send a few milliwatts to ...

Walk into any pub and order a pint of Guinness, and you’ll witness a mesmerizing ritual. The bartender pulls the tap, fills the glass two-thirds full, then sets it aside to settle before ...

If you want to blink an LED once every second, you could use just about any old timer circuit to create a 1 Hz signal. Or, you could go the complicated route like [Anthony Vincz] and grab 1 Hz off ...

I know many computer languages, but I’ve struggled all my life to learn a second human language. One of my problems is that I can’t stop trying to translate in my head. Just like Morse ...

Brilliant Labs have been making near-eye display platforms for some time now, and they are one of the few manufacturers ...

Australia is known for great beaches, top-tier coffee, and a laidback approach to life that really doesn’t square with all ...

No one likes cleaning out water spouts. [NeedItMakeIt] wanted to collect rainwater and was interested in using a Coanda filter that those used on hydroelectric plants to separate out debris.

Keeping retrocomputers going can be tricky enough, but when you’re talking retro laptops, the battery packs add an extra ...

We can’t throw stones. [Leaded Solder] picked up a SparcStation 1+ in 2018 and found it only produced illegal instruction ...

How CMOS is Designed CMOS, which means Complementary Metal Oxide Semiconductor, is based on combining two polarities of MOSFETS; Metal Oxide Semiconductor Field Effect Transistors. Regular ...

What if you have a need for liquid nitrogen, but you do not wish to simply order it from a local supplier? In that case you can build your very own pulse tube cryocooler, as [Hyperspace Pirate] is … ...