Why Leaded Fuel Is Still A Thing
https://hackaday.com/2026/05/04/why-leaded-fuel-is-still-a-thing/

Leaded fuel is considered one of the greatest environmental failures in modern human history. Adding tetraethyl lead to gasoline reduced knock in internal combustion engines, which was widely considered a …read more (https://hackaday.com/2026/05/04/why-leaded-fuel-is-still-a-thing/)

ESP32 Hosts SolarPunk Message Board
https://hackaday.com/2026/05/04/esp32-hosts-solarpunk-message-board/

Solarpunk is sometimes thought of as the “good ending” to cyberpunk– there’s technology, but it’s community-focused instead of in the hands of evil conglomerates, and– if the name doesn’t give …read more (https://hackaday.com/2026/05/04/esp32-hosts-solarpunk-message-board/)

Strange Ways to Make Cold
https://hackaday.com/2026/05/04/strange-ways-to-make-cold/

Making stuff cool and keeping it that way has been a pretty essential part of human civilization for thousands of years, with only in the past few hundred years man-made …read more (https://hackaday.com/2026/05/04/strange-ways-to-make-cold/)

A Shortwave Sensor to Monitor the Ionosphere
https://hackaday.com/2026/05/04/a-shortwave-sensor-to-monitor-the-ionosphere/

The ionosphere is of great importance to shortwave radio transmissions, since it allows radio waves to be refracted and reflected over the horizon, and it’s therefore unfortunate that the height …read more (https://hackaday.com/2026/05/04/a-shortwave-sensor-to-monitor-the-ionosphere/)

Sunlight Powered, Sunlight Readable: Solar Case for Nook Simple Touch
https://hackaday.com/2026/05/04/sunlight-powered-sunlight-readable-solar-case-for-nook-simple-touch/

When life gives you lemons, you make lemonade. What if life gives you a pile of old e-book readers? Well, when [spiritplumber] got box of old Nook Simple Touch devices, …read more (https://hackaday.com/2026/05/04/sunlight-powered-sunlight-readable-solar-case-for-nook-simple-touch/)

Teardown of a Shahed-136 Gimbaled Camera
https://hackaday.com/2026/05/04/teardown-of-a-shahed-136-gimbaled-camera/

The Iranian Shahed-136’s basic design has seen many changes and additions since Russia began using them, with some featuring interesting payloads such as cameras in a gimbal, making these drones …read more (https://hackaday.com/2026/05/04/teardown-of-a-shahed-136-gimbaled-camera/)

The Math You Need to Start Understanding LLMs
https://hackaday.com/2026/05/04/the-math-you-need-to-start-understanding-llms/

Once you peel back the hype and mysticism, large language models (LLMs) are a fascinating application of statistical models, effectively what you get when you dial a basic auto-complete model …read more (https://hackaday.com/2026/05/04/the-math-you-need-to-start-understanding-llms/)