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13 items on 18 Oct 2026
Hardware

Off-Grid Refrigeration Using Fire and Salt

Refrigeration has been a challenge for humanity since the start. Ancient civilizations in dry climates like Persia and Egypt could use evaporative cooling on a large scale with specialized architecture, …read more

Source: Hackaday Bryan Cockfield
Hardware

Building a Microscope with a 3D View

As electronic components grow ever smaller, a microscope has become an increasingly indispensable tool for any fine work; when inspecting electronics, though, especially solder joints, [Corebb] found a top-down view…

Source: Hackaday Aaron Beckendorf
Hardware

Pixie – the 3W Chainable LED Pixel #AdafruitLearnSystem

NeoPixels are plenty bright, suuuure. BUT ARE THEY 3 WATTS BRIGHT? No! They are not! That’s why you need a Pixie. These chainable smart LEDs are not only super-smart, they are ridonkulously bright with 3W total,…

Source: Adafruit Blog Jessie Mae
Hardware

A Plasma Donut

We know [The Action Lab] always has something hands-on. This time, the video shows a toroidal plasma demo and how it relates to nuclear fusion. Plasma has a high temperature, …read more

Source: Hackaday Al Williams
Hardware

Evolving RC circuits

We are surrounded by evolving algorithms and AI models, and it feels like we have to evolve to them as well. Of course, the world itself is always evolving, and …read more

Source: Hackaday Ian Bos
Hardware

Turning a Wi-Fi Adapter into an SDR

Since the discovery of an undocumented I/Q sampling feature in ESP32 chips about two weeks ago, there’s been a flood of similar features being found in other wireless chips, including …read more

Source: Hackaday Aaron Beckendorf