Collaborate Disseminate
We all love a nice strip or grid of addressable LEDs. It can add flair or an artistic touch to many projects, and it can make gaming computers look extra …read more Continue reading The BAPPR Keeps Your Addressable LED System Cool
We all know the old maxim: if it’s too good to be true, it’s probably made with fake components. OK, maybe that’s not exactly how it goes, but in our …read more Continue reading Cheap Power Supplies with Fake Chips Might Not be That Bad
For those living before the invention of the transistor, the modern world must appear almost magical. Computers are everywhere now and are much more reliable, but there are other less …read more Continue reading Buck Converter Takes 8V to 100V
When it comes to powering tiny devices for a long time, coin cell batteries are the battery of choice for things like keyfobs, watches, and even some IoT devices. They’re …read more Continue reading Minimizing Stress on a Coin Cell Battery
Switching regulators have delivered such convenience and efficiency compared to their linear siblings, that it’s now becoming rare to see an old-style three-terminal regulator. Modern designs have integrated to such …read more Continue reading Op Amp Challenge: An Op-Amp Buck Regulator
There comes a time in every hardware hacker’s career during which they first realize they need a negative voltage rail in their project. There also comes a time, usually ~10ms …read more Continue reading Quick and (Not Very) Dirty Negative Voltage Supply
When [ccooper] told his parents he was gonna start up his electronics habit again, the last thing he expected was to save his parents’ marriage in the process. But as soon as he dropped this news, they made a special request: build us something to replace the multi-purpose manual cribbage …read more
Continue reading Digital Cribbage Board Saves Scores, Marriage
If you want to easily control the power in a circuit, you’ll probably reach for the classic toggle switch. While there’s certainly nothing wrong with that, physical toggles are a bit dated at this point. A soft power switch that turns your gadget on and off at the tap of …read more
Continue reading A Simple Soft Power Switch Using Common Modules
Anyone who has ever etched their own PCB knows that the waiting is the hardest part. Dissolving copper in ferric chloride takes time, much like developing a Polaroid picture. And although you really should not shake a fresh Polaroid to speed up development, the PCB etching process thrives on agitation. …read more
When the Raspberry Pi 3 Model B+ was announced in March of 2018, one of its new features was the ability to be (more easily) powered via Power-over-Ethernet (PoE), with an official PoE HAT for the low price of just twenty-one USA bucks. The thing also almost worked as intended …read more
Continue reading Using PoE With A Raspberry Pi 3 For About Two Bucks