What’s inside a PNG file? Graphics, sure. But how is that graphic encoded? [Evan Hahn] shows you what goes into a single black pixel inside a 67-byte file. Why so …read more (https://hackaday.com/2024/01/06/a-look-inside-the-smallest-possible-png-file/)

Seeing Fireworks in a Different Light
https://hackaday.com/2024/01/06/seeing-fireworks-in-a-different-light/

If you’re worried that [Roman Dvořák]’s spectroscopic analysis of fireworks is going to ruin New Year’s Eve or the Fourth of July, relax — the science of this build only …read more (https://hackaday.com/2024/01/06/seeing-fireworks-in-a-different-light/)

[Thomas Sanladerer] Gets New Threads
https://hackaday.com/2024/01/06/thomas-sanladerer-gets-new-threads/

If you do much practical 3D printing, you eventually need some sort of fastener. You can use a screw to bite into plastic. You can create a clearance hole to …read more (https://hackaday.com/2024/01/06/thomas-sanladerer-gets-new-threads/)

An Adjustable High-Voltage Power Supply Built with Safety in Mind
https://hackaday.com/2024/01/06/an-adjustable-high-voltage-power-supply-built-with-safety-in-mind/

It’s not entirely clear why [Advanced Tinkering] needs a 50,000-volt power supply, but given the amount of work he put into this one, we’re going to guess it will be …read more (https://hackaday.com/2024/01/06/an-adjustable-high-voltage-power-supply-built-with-safety-in-mind/)

A Journey Through Font Rendering
https://hackaday.com/2024/01/07/a-journey-through-font-rendering/

In the wide world of programming, there are a few dark corners that many prefer to avoid and instead leverage the well-vetted libraries that are already there. [Phillip Tennen] is …read more (https://hackaday.com/2024/01/07/a-journey-through-font-rendering/)

802.11ah Wi-Fi HaLOW: The 1 Kilometer WiFi Standard
https://hackaday.com/2024/01/07/802-11ah-wi-fi-halow-the-1-kilometer-wifi-standard/

The 802.11ah WiFi (HaLow) standard is fairly new, having only been introduced in 2017. It’s supposed to fall somewhere between standard WiFi used in domiciles and offices and the longer …read more (https://hackaday.com/2024/01/07/802-11ah-wi-fi-halow-the-1-kilometer-wifi-standard/)

Remote-Control Kinetic Sand Table Uses a Single Arduino
https://hackaday.com/2024/01/07/remote-control-kinetic-sand-table-uses-a-single-arduino/

There’s nothing fun about a Sisyphean task unless you’re watching one being carried out by someone or something else. In that case, it can be mesmerizing like this Arduino-driven kinetic …read more (https://hackaday.com/2024/01/07/remote-control-kinetic-sand-table-uses-a-single-arduino/)