The Colmi R02 is one of the cheapest smart rings on the market. It costs about $20, and is remarkably easy to hack. [Floyd Steinberg] took advantage of this to …read more (https://hackaday.com/2026/01/31/cheap-smart-ring-becomes-midi-controller/)

Thomas Edison May Have Discovered Graphene
https://hackaday.com/2026/01/31/thomas-edison-may-have-discovered-graphene/

Thomas Edison is well known for his inventions (even if you don’t agree he invented all of them). However, he also occasionally invented things he didn’t understand, so they had …read more (https://hackaday.com/2026/01/31/thomas-edison-may-have-discovered-graphene/)

Motorized Faders Make An Awesome Volume Mixer For Your PC
https://hackaday.com/2026/01/31/motorized-faders-make-an-awesome-volume-mixer-for-your-pc/

These days, Windows has a moderately robust method for managing the volume across several applications. The only problem is that the controls for this are usually buried away. [CHWTT] found …read more (https://hackaday.com/2026/01/31/motorized-faders-make-an-awesome-volume-mixer-for-your-pc/)

Changing Print Layer Patterns to Increase Strength
https://hackaday.com/2026/01/31/changing-print-layer-patterns-to-increase-strength/

Dy default, the slicing software used for 3D printers has the printer first create the walls around the edges of a print, then goes back to deposit the infill pattern. …read more (https://hackaday.com/2026/01/31/changing-print-layer-patterns-to-increase-strength/)

Lumafield Peers into the 18650 Battery
https://hackaday.com/2026/01/31/lumafield-peers-into-the-18650-battery/

[Alex Hao] and [Andreas Bastian] of Lumafield recently visited with [Adam Savage] to share their battery quality report, which documents their findings after performing X-ray computed tomography scans on over …read more (https://hackaday.com/2026/01/31/lumafield-peers-into-the-18650-battery/)

Building a Metal 3D Printer with a Laser Welder
https://hackaday.com/2026/02/01/building-a-metal-3d-printer-with-a-laser-welder/

The development of cheaper, more powerful lasers has always been a cause for excitement among hackers, and fiber lasers are no exception. One of the newer tools they’ve enabled is …read more (https://hackaday.com/2026/02/01/building-a-metal-3d-printer-with-a-laser-welder/)

Limiting Battery Risk On Repurposed Smartphones With PostmarketOS
https://hackaday.com/2026/02/01/limiting-battery-risk-on-repurposed-smartphones-with-postmarketos/

PostmarketOS is a Linux distribution specifically designed for those who wish to repurpose old smartphones as general-use computers, to a degree. This can be a great way to reuse old …read more (https://hackaday.com/2026/02/01/limiting-battery-risk-on-repurposed-smartphones-with-postmarketos/)