Categoria: Hackaday (https://hackaday.com/)

Measuring a Well with Just a Hammer and a Smartphone
What’s the best way to measure the depth of a well using a smartphone? If you’re fed up with social…

Better C Strings, Simply
If you program in C, strings are just in your imagination. What you really have is a character pointer, and…

FLOSS Weekly Episode 813a: Happy Holidays!
This week and next we take off for the holidays! We have an exciting schedule after the break, so stay…

Simple Fluorometer Makes Nucleic Acid Detection Cheap and Easy
Back in the bad old days, dealing with DNA and RNA in a lab setting was often fraught with peril….

Upper Room UV-C Keeps Air Cleaner
2020 saw the world rocked by widespread turmoil, as a virulent new pathogen started claiming lives around the globe. The…

Push for On, Hold for Off, AC Edition
A common theme in modern consumer electronics is having a power button that can be tapped to turn the device…

Enabling NVMe on the Raspberry Pi 500 With a Handful of Parts
With the recent teardown of the Raspberry Pi 500, there were immediately questions raised about the unpopulated M.2 pad and…

PCB Motor Holds Fast, Even After 1.6 Billion Spins
If you aren’t up to date with [Carl Bugeja]’s work with tiny brushless PCB motors, his summary video of his…

Why NASA Only Needs Pi To So Many Decimal Places
If you’re new to the world of circular math, you might be content with referring to pi as 3.14. If…

A Compass That Looks to the Stars
Although a lot of tools have been digitized and consolidated into our smartphones, from cameras, music players, calendars, alarm clocks,…