True-Spectrum Photography with Structural Color
https://hackaday.com/2026/05/03/true-spectrum-photography-with-structural-color/

Although modern cameras can, with skill and good conditions, produce photographs nearly indistinguishable from the original scene, this fidelity relies on the limitations of human vision. According to the trichromatic …read more (https://hackaday.com/2026/05/03/true-spectrum-photography-with-structural-color/)

TDR For Auto Diagnostics Done On The Cheap
https://hackaday.com/2026/05/04/tdr-for-auto-diagnostics-done-on-the-cheap/

A time domain reflectometer (TDR) is a useful tool to have for finding faults in a wiring harness. However, they don’t come cheap, putting them out of reach for many …read more (https://hackaday.com/2026/05/04/tdr-for-auto-diagnostics-done-on-the-cheap/)

TagTinker Lets You Hack Electronic Shelf Labels
https://hackaday.com/2026/05/04/tagtinker-lets-you-hack-electronic-shelf-labels/

Was there ever anything wrong with simple paper price labels? Absolutely not. And yet, the world invented the electronic price tag anyway. If you happen to come across some of …read more (https://hackaday.com/2026/05/04/tagtinker-lets-you-hack-electronic-shelf-labels/)

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/