Batteries are notoriously difficult pieces of technology to deal with reliably. They often need specific temperatures, charge rates, can’t tolerate physical shocks or damage, and can fail catastrophically if all …read more (https://hackaday.com/2026/04/01/battery-tester-outperforms-cheaper-options/)

Following Artemis II’s Journey Around the Moon
https://hackaday.com/2026/04/01/following-artemis-iis-journey-around-the-moon/

NASA is going back to the Moon! We’ll follow the crew of Artemis II every step of the way. Day 1 – Liftoff! After resolving a last-minute communications issue with …read more (https://hackaday.com/2026/04/01/following-artemis-iis-journey-around-the-moon/)

OldVersion is Back, and Better than Ever
https://hackaday.com/2026/04/01/oldversion-is-back-and-better-than-ever/

You know what they say — you can’t keep a good website down. OldVersion.com, the repository of outdated software that has been serving up old versions of tools you need …read more (https://hackaday.com/2026/04/01/oldversion-is-back-and-better-than-ever/)

Watch an Electro-Permanent Magnet In Action
https://hackaday.com/2026/04/01/watch-an-electro-permanent-magnet-in-action/

Electro-permanent magnets (EPMs) are pretty nifty concepts, and if you aren’t familiar with them, they are permanent magnets with the ability to be electrically switched on or off. Unlike an …read more (https://hackaday.com/2026/04/01/watch-an-electro-permanent-magnet-in-action/)

Every 3D Printable Film Camera, In One Place
https://hackaday.com/2026/04/01/every-3d-printable-film-camera-in-one-place/

For those of us who hack old cameras, the 3D printer has undoubtedly been a boon. High precision, or at least consistent precision, lightproof enclosures can be easily made and …read more (https://hackaday.com/2026/04/01/every-3d-printable-film-camera-in-one-place/)

Post-Failure Autopsy and Analysis of an LFP Battery
https://hackaday.com/2026/04/02/post-failure-autopsy-and-analysis-of-an-lfp-battery/

Recently [Kerry Wong] had one of his Cyclenbatt LiFePO4 batteries die after only a few dozen cycles, with a normal voltage still present on the terminals. One of the symptoms …read more (https://hackaday.com/2026/04/02/post-failure-autopsy-and-analysis-of-an-lfp-battery/)

Pixel Camera Puts Lo-Fi Images In The Palm Of Your Hand
https://hackaday.com/2026/04/02/pixel-camera-puts-lo-fi-images-in-the-palm-of-your-hand/

Some things have an undeniable appeal, and lo-fi, pixelated Game Boy-camera-like images are one of them. In service of this, [Raul Zanardo] created his handheld pixel camera that goes the …read more (https://hackaday.com/2026/04/02/pixel-camera-puts-lo-fi-images-in-the-palm-of-your-hand/)

Ask Hackaday: How Much Compute is Enough?
https://hackaday.com/2026/04/02/ask-hackaday-how-much-compute-is-enough/