If you’ve ever had a medical team investigating cardiac issues, you’ve probably had a bunch of electrodes stuck all over your chest and been hooked up to an electrocardiogram. This …read more (https://hackaday.com/2026/05/19/how-pulse-oximetry-figures-out-your-blood-oxygen-levels/)

Recreating a Broken Laminated Wooden Furniture Part
https://hackaday.com/2026/05/19/recreating-a-broken-laminated-wooden-furniture-part/

Everyone loves those rather bouncy wooden lounge chairs that got popularized by a certain Swedish seller of furniture, but as tough as they are, the laminated wood can still break …read more (https://hackaday.com/2026/05/19/recreating-a-broken-laminated-wooden-furniture-part/)

Building a Pip Boy Themed Smartwatch
https://hackaday.com/2026/05/19/building-a-pip-boy-themed-smartwatch/

One of the problems with good science fiction is that it introduces us to all kinds of cool devices that we can’t actually have in real life. [Huy Vector] has …read more (https://hackaday.com/2026/05/19/building-a-pip-boy-themed-smartwatch/)

The 8-bit Web Server
https://hackaday.com/2026/05/19/the-8-bit-web-server/

Even [maurycyz] doesn’t think it is a good idea, but it is possible to use an AVR 8-bit CPU to serve web pages. Of course, it is a vastly simplified …read more (https://hackaday.com/2026/05/19/the-8-bit-web-server/)

Building A Device To Map Magnetic Fields
https://hackaday.com/2026/05/19/building-a-device-to-map-magnetic-fields/

Magnetic fields are all around us. We can’t really feel or see them ourselves, per se, but we can map them with the right hardware, like this device built by …read more (https://hackaday.com/2026/05/19/building-a-device-to-map-magnetic-fields/)

Using 3D Printers To Make Circuit Boards
https://hackaday.com/2026/05/19/using-3d-printers-to-make-circuit-boards/

Custom printed circuit boards have become more and more accessible to the average hobbyist over the last decade. But one problem still remains: your circuits will take at least a …read more (https://hackaday.com/2026/05/19/using-3d-printers-to-make-circuit-boards/)

DecayDock Keeps Track of Spoilage
https://hackaday.com/2026/05/20/decaydock-keeps-track-of-spoilage/

Many of us have suffered the common experience of buying a great deal of (now very expensive) food, only to have it go off before it can be consumed. [ptallthings93] …read more (https://hackaday.com/2026/05/20/decaydock-keeps-track-of-spoilage/)

Bring Back That Aged Scanner, in Your Browser
https://hackaday.com/2026/05/20/bring-back-that-aged-scanner-in-your-browser/