Keebin’ with Kristina: the One with the Split with the Num Pad
https://hackaday.com/2026/01/26/keebin-with-kristina-the-one-with-the-split-with-the-num-pad/

I love, love, love Saturn by [Rain2], which comes in two versions. The first, which is notably more complex, is shown here with its rings-of-Saturn thumb clusters. So what was …read more (https://hackaday.com/2026/01/26/keebin-with-kristina-the-one-with-the-split-with-the-num-pad/)

Restoring a 1924 Frigidaire B-9 Refrigerator Back to Working Condition
https://hackaday.com/2026/01/26/restoring-a-1924-frigidaire-b-9-refrigerator-back-to-working-condition/

Before the refrigerator became a normal part of any kitchen, those with enough money to throw around could get an icebox, which used melting ice to cool food and drinks …read more (https://hackaday.com/2026/01/26/restoring-a-1924-frigidaire-b-9-refrigerator-back-to-working-condition/)

Create a Tiny Telephone Exchange with an Analog Telephone Adapter
https://hackaday.com/2026/01/26/create-a-tiny-telephone-exchange-with-an-analog-telephone-adapter/

An analog telephone adapter (ATA), or FXS gateway, is a device that allows traditional analog phones to be connected to a digital voice-over-IP (VoIP) network. In addition to this, you …read more (https://hackaday.com/2026/01/26/create-a-tiny-telephone-exchange-with-an-analog-telephone-adapter/)

One Hundred Years Of Telly
https://hackaday.com/2026/01/26/one-hundred-years-of-telly/

Today marks an auspicious anniversary which might have passed us by had it not been for [Diamond Geezer], who reminds us that it’s a hundred years since the first public …read more (https://hackaday.com/2026/01/26/one-hundred-years-of-telly/)

The History of Tandem Computers
https://hackaday.com/2026/01/26/the-history-of-tandem-computers/

If you are interested in historical big computers, you probably think of IBM, with maybe a little thought of Sperry Rand or, if you go smaller, HP, DEC, and companies …read more (https://hackaday.com/2026/01/26/the-history-of-tandem-computers/)

Why Diffraction Gratings Create Fourier Transforms
https://hackaday.com/2026/01/27/why-diffraction-gratings-create-fourier-transforms/

When last we saw [xoreaxeax], he had built a lens-less optical microscope that deduced the structure of a sample by recording the diffraction patterns formed by shining a laser beam …read more (https://hackaday.com/2026/01/27/why-diffraction-gratings-create-fourier-transforms/)

Pi Compute Module Powers Fully Open Smartphone
https://hackaday.com/2026/01/27/pi-compute-module-powers-fully-open-smartphone/