Perfecting the Pulse Oximeter
https://hackaday.com/2023/08/07/perfecting-the-pulse-oximeter/

We’re always looking for interesting biohacks here on Hackaday, and this new research article describing a calibrated pulse oximeter for different skin tones really caught our attention. Pulse oximeters are …read more (https://hackaday.com/2023/08/07/perfecting-the-pulse-oximeter/)

The Egyptian Coin Box ‘Trick’
https://hackaday.com/2023/08/07/the-egyptian-coin-box-trick/

https://incoherency.co.uk/blog/stories/egyptian-coin-box.html
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2023/08/4463-featured.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2023/08/4463-featured.png?w=800">[James Stanley] likes to spend time making puzzles and gadgets for escape rooms, and decided for a change to try their hand at a bit of magic. The idea was …read more (https://hackaday.com/2023/08/07/the-egyptian-coin-box-trick/)

When the Sojourner Mars Rover Nearly Ran LISP
https://hackaday.com/2023/08/07/when-the-sojourner-mars-rover-nearly-ran-lisp/

Ron Garrett standing in front of the Robbie prototype. Rocky III can be see in the lower left, and above him are Rajiv Desai and Robert Ivlev, two other members of the team. (Credit: Ron Garret)
" data-medium-file="https://hackaday.com/wp-content/uploads/2023/08/ron_garrett_robbie_rocky_iii_mars_rovers.jpeg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2023/08/ron_garrett_robbie_rocky_iii_mars_rovers.jpeg?w=800">During the late 1980s NASA’s Jet Propulsion Laboratory (JPL) was busy developing the first ever wheeled robot that would roam the surface of Mars. Due to the long round-trip times …read more (https://hackaday.com/2023/08/07/when-the-sojourner-mars-rover-nearly-ran-lisp/)

Linux Containers the Hard Way
https://hackaday.com/2023/08/07/linux-containers-the-hard-way/

If you want to make containers under Linux, plenty of high-level options exist. [Lucavallin] wanted to learn more about how containers really work, so he decided to tackle the problem …read more (https://hackaday.com/2023/08/07/linux-containers-the-hard-way/)

Enhance Your Enclosures With a Shadow Line
https://hackaday.com/2023/08/07/enhance-your-enclosures-with-a-shadow-line/

Some design techniques and concepts from the injection molding world apply very nicely to 3D printing, despite them being fundamentally different processes. [Teaching Tech] demonstrates designing shadow lines into 3D printed …read more (https://hackaday.com/2023/08/07/enhance-your-enclosures-with-a-shadow-line/)

Reviving an 8-Inch Hard Drive From the 1980s
https://hackaday.com/2023/08/08/reviving-an-8-inch-hard-drive-from-the-1980s/

As part of the eternal quest within the realm of retrocomputing, storage devices can be one of the most challenging, especially when it comes to firmly obsolete hard drives, such …read more (https://hackaday.com/2023/08/08/reviving-an-8-inch-hard-drive-from-the-1980s/)

Different Etching Strokes for Different PCBs, Folks
https://hackaday.com/2023/08/08/different-etching-strokes-for-different-pcbs-folks/