penPal, a Robotic Drawing Assistant
https://hackaday.com/2026/04/25/penpal-a-robotic-drawing-assistant/

Emergent properties include examples like murmurations of starlings which can’t be predicted from looking at a single bird, weather which can’t be predicted by looking at a few air molecules, …read more (https://hackaday.com/2026/04/25/penpal-a-robotic-drawing-assistant/)

2026 Green Powered Challenge: Ventilate Your Way To Power!
https://hackaday.com/2026/04/25/2026-green-powered-challenge-ventilate-your-way-to-power/

Have you ever looked out across the rooftops of a city and idly gazed at the infrastructure that remains unseen from the street? It seems [varunsontakke80] has, because here’s their …read more (https://hackaday.com/2026/04/25/2026-green-powered-challenge-ventilate-your-way-to-power/)

You Wouldn’t Download a Combustion Engine
https://hackaday.com/2026/04/25/you-wouldnt-download-a-combustion-engine/

Although 3D printing it a great tool for making all sorts of things, the nature of the plastics used in most desktop FDM printers means it isn’t the first tool …read more (https://hackaday.com/2026/04/25/you-wouldnt-download-a-combustion-engine/)

Quantum Computers Are Not a Threat to 128-bit Symmetric Keys
https://hackaday.com/2026/04/25/quantum-computers-are-not-a-threat-to-128-bit-symmetric-keys/

A lot has been made about a post-quantum computer future in which traditional encryption methods have suddenly been rendered obsolete. With this terrifying idea in mind, it’s reassuring to see …read more (https://hackaday.com/2026/04/25/quantum-computers-are-not-a-threat-to-128-bit-symmetric-keys/)

Slicer Settings for “Indestructible” Battle-Bot Worthy PLA Parts
https://hackaday.com/2026/04/25/slicer-settings-for-indestructible-battle-bot-worthy-pla-parts/

If you follow [Maker’s Muse] on YouTube, you know he’s as passionate about robot fights these days as he is about the tools he uses to make the robots. Luckily …read more (https://hackaday.com/2026/04/25/slicer-settings-for-indestructible-battle-bot-worthy-pla-parts/)

The Arduino UNO, Basically
https://hackaday.com/2026/04/26/the-arduino-uno-basically/

If you miss the days when you used Basic on your classic computer or wrote embedded software with a Basic Stamp, then maybe dust off your Arduino UNO or any …read more (https://hackaday.com/2026/04/26/the-arduino-uno-basically/)

Building an IBM PCjr BIOS from Source Using Original Printed Source Code
https://hackaday.com/2026/04/26/building-an-ibm-pcjr-bios-from-source-using-original-printed-source-code/

https://commons.wikimedia.org/wiki/File:IBM_PCB_Jr_Internal.jpg
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2026/04/IBM_PCB_Jr_Internal.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2026/04/IBM_PCB_Jr_Internal.jpg?w=800">As unloved as IBM’s PCjr was, with only a one-year production run, it’s hard to complain about the documentation available for it. This includes the x86 assembly listing for the …read more (https://hackaday.com/2026/04/26/building-an-ibm-pcjr-bios-from-source-using-original-printed-source-code/)