Collaborate Disseminate
Entry-level oscilloscopes are a great way to get some low-cost instrumentation on a test bench, whether it’s for a garage lab or a schoolroom. But the cheapest ones are often …read more Continue reading Low Cost Oscilloscope Gets Low Cost Upgrades
With vector network analyzers, the commercial offerings seem to come in two flavors: relatively inexpensive but limited capabilities, and full-featured but scary expensive. There doesn’t seem to be much middle …read more Continue reading Homemade VNA Delivers High-Frequency Performance on a Budget
Spoiler alert: almond butter isn’t phosphorescent. But powdered milk is, at least to the limit of detection of this homebrew phosphorescence detector. Why spend a bunch of time and money …read more Continue reading Homebrew Phosphorescence Detector Looks for the Glow in Everyday Objects
Chances are good that most of us will go through life without ever having to perform gas chromatography, and if we do have the occasion to do so, it’ll likely …read more Continue reading A Homebrew Gas Chromatograph That Won’t Bust Your Budget
While we generally prefer to bring our readers as much information about a project as possible, sometimes we just have to go with what we see. That generally happens with …read more Continue reading A Brief Look Inside a Homebrew Digital Sampler from 1979
[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example …read more Continue reading Arduino Measures Remaining Battery Power With Zero Components, No I/O Pin
Getting the finishing details on a Halloween costume completed is the key to impressing friends and strangers alike on the trick-or-treat rounds. Especially when it comes to things like props, …read more Continue reading Upgraded Toy Guitar Plays Music
Guitarists will do just about anything to get just the right sound out of their setup, including purposely introducing all manner of distortion into the signal. It seems counter-intuitive, but …read more Continue reading Guitar Distortion with Diodes in Code, Not Hardware
[jgpeiro] is no slouch when it comes to building small, affordable oscilloscopes out of common microcontrollers. His most recent, based on an RP2040 with two channels that ran at 100 …read more Continue reading STM32 Oscilloscope Uses All the Features
In a world where an analogue to digital converter is all too often an integrated peripheral buried inside a microcontroller, it’s easy to forget how simple these devices can be …read more Continue reading A High Precision ADC That You Can Understand!