In structures like photovoltaic cells there is only a limited spectrum of wavelengths that can perform useful work, with the remaining wavelengths of electromagnetic radiation effectively wasted. If the energy …read more (https://hackaday.com/2026/06/25/increasing-photon-upconversion-efficiency-with-structural-exciton-localization/)

Make That Smart TV into a Computer
https://hackaday.com/2026/06/25/make-that-smart-tv-into-a-computer/

“Penguins” (https://www.flickr.com/photos/65143725@N08/5927271192) by TomaLaPlaya (https://www.flickr.com/photos/65143725@N08)
' data-large-file="https://hackaday.com/wp-content/uploads/2019/10/LinuxMarketing.jpg?w=800">The smart TV is a fixture in most houses, variously an entertainment portal, corporate data gathering tool, or sometimes an outright spy. It’s a nice monitor with a computer built …read more (https://hackaday.com/2026/06/25/make-that-smart-tv-into-a-computer/)

This Kid-Friendly Laptop Build is The Antidote to Age Verification
https://hackaday.com/2026/06/26/this-kid-friendly-laptop-build-is-the-antidote-to-age-verification/

Age-verification has been a topic of hot debate recently, with many in the community feeling that keeping kids safe online is better handled by the parents. But what does that …read more (https://hackaday.com/2026/06/26/this-kid-friendly-laptop-build-is-the-antidote-to-age-verification/)

Alan Turing’s Remarkable, Nearly-Forgotten Voice Encryption Device
https://hackaday.com/2026/06/26/alan-turings-remarkable-nearly-forgotten-voice-encryption-device/

[Popular Mechanics] has an interesting article about Alan Turing’s nearly-forgotten speech encryption device. Codenamed Delilah, it was in many ways an early form of digital encryption. It was secretly developed alongside …read more (https://hackaday.com/2026/06/26/alan-turings-remarkable-nearly-forgotten-voice-encryption-device/)

This Week in Security: Stealing Email with AI, AMD Nerfs Chips, the World Cup Nearly Rickrolled, and GPSD Bugs
https://hackaday.com/2026/06/26/this-week-in-security-stealing-email-with-ai-amd-nerfs-chips-the-world-cup-nearly-hacked-and-gpsd-bugs/

Firefox recently added integrated AI support — a generally poorly received move among many Firefox users — that includes an AI chatbot integration for interacting with web pages. Florian Port …read more (https://hackaday.com/2026/06/26/this-week-in-security-stealing-email-with-ai-amd-nerfs-chips-the-world-cup-nearly-hacked-and-gpsd-bugs/)

A GUI Solution For ESP32 Web Development
https://hackaday.com/2026/06/26/a-gui-solution-for-esp32-web-development/

These days, a lot of embedded projects feature some sort of screen, and a screen often creates a desire for a nice user interface. [Geoffrey Wells] has created a tool …read more (https://hackaday.com/2026/06/26/a-gui-solution-for-esp32-web-development/)

Hackaday Podcast Episode 375: Rebuilding Tech on Our Terms and the Hero Nerd
https://hackaday.com/2026/06/26/hackaday-podcast-episode-375-rebuilding-tech-on-our-terms-and-the-hero-nerd/

In this episode, Hackaday editors Elliot Williams and Tom Nardi start off by taking a trip down the Raspberry Pi memory lane and then tackle a fresh pile of listener …read more (https://hackaday.com/2026/06/26/hackaday-podcast-episode-375-rebuilding-tech-on-our-terms-and-the-hero-nerd/)

Reflective LCD Slabtop Terminal Runs Homebrewed Solar OS
https://hackaday.com/2026/06/26/reflective-lcd-slabtop-terminal-runs-homebrewed-solar-os/