Dumpster-dived Window A/C becomes Ground-Source Heat Pump
https://hackaday.com/2026/09/22/dumpster-dived-window-a-c-becomes-ground-source-heat-pump/

Heat pumps are great, because they pump heat around, and we often don’t want heat where it is. Need it somewhere else? Pump it! It’s great. It’s also a bit …read more (https://hackaday.com/2026/09/22/dumpster-dived-window-a-c-becomes-ground-source-heat-pump/)

ESP32 Replacement for Lighting Display Controller
https://hackaday.com/2026/09/22/esp32-replacement-for-lighting-display-controller/

As a company, NanoLeaf has been producing modular lights that can be easily snapped together into various geometric shapes for around a decade. Similar to the addressable LED light strips …read more (https://hackaday.com/2026/09/22/esp32-replacement-for-lighting-display-controller/)

Why Raindrops Make for Pretty Good Antennae
https://hackaday.com/2026/09/22/why-raindrops-make-for-pretty-good-antennae/

A good rule of thumb is that everything that can interact with electromagnetic (EM) radiation is an antenna, which includes our mostly-salty-water-containing bodies and also raindrops and moisture in the …read more (https://hackaday.com/2026/09/22/why-raindrops-make-for-pretty-good-antennae/)

Myst on the Atari 2600
https://hackaday.com/2026/09/22/myst-on-the-atari-2600/

Although the Atari 2600 was a hugely popular game console in the late 70s, its hardware specs were limited, to say the least. For a dedicated game console of the …read more (https://hackaday.com/2026/09/22/myst-on-the-atari-2600/)

Smelting Bog Ore As It Should Be Done
https://hackaday.com/2026/09/23/smelting-bog-ore-as-it-should-be-done/

Sometimes along comes a hack with a personal angle, and in a video showing Irish bog ore smelting, we find an appropriate follow up to a Hackaday expedition back in …read more (https://hackaday.com/2026/09/23/smelting-bog-ore-as-it-should-be-done/)

Modern USB Controllers On Win98 (and up)
https://hackaday.com/2026/09/23/modern-usb-controllers-on-win98-and-up/

[Yeo Kheng Meng] has a problem: he likes Windows 98, but he also likes his 2020 ThinkPad, which only has an xHCI USB controller– you know, the kind needed for …read more (https://hackaday.com/2026/09/23/modern-usb-controllers-on-win98-and-up/)

A Tiny Toy Synth For Smaller Computers
https://hackaday.com/2026/09/23/a-tiny-toy-synth-for-smaller-computers/