Measuring electric currents is an essential element of many electrical systems, but doing so in a way that is as nonintrusive as possible is not an easy problem to solve. …read more (https://hackaday.com/2026/10/21/every-type-of-current-sensor-explained/)

Making a Five-Segment Display with Platinum-Titanium Cathodes
https://hackaday.com/2026/10/21/making-a-five-segment-display-with-platinum-titanium-cathodes/

Before the advent of effective semiconductor LEDs many display types existed to display things like numbers and other characters. The Nixie tube is a well-known one, along with VFDs and …read more (https://hackaday.com/2026/10/21/making-a-five-segment-display-with-platinum-titanium-cathodes/)

Reading QR Codes by Hand
https://hackaday.com/2026/10/21/reading-qr-codes-by-hand/

QR codes can be a handy way to send a link or contact details without all that tedious mucking about with typing in a link, but they aren’t very useful …read more (https://hackaday.com/2026/10/21/reading-qr-codes-by-hand/)

Trying to Get Linux Running on a Nokia E6
https://hackaday.com/2026/10/22/trying-to-get-linux-running-on-a-nokia-e6/

The Nokia E6 is a smartphone from back in the old days when Symbian was a thing. [fluffleswaffled] has been doing the work to get the ancient handset running Linux …read more (https://hackaday.com/2026/10/22/trying-to-get-linux-running-on-a-nokia-e6/)

Floating-Point Addition and Subtraction on Intel’s 8087
https://hackaday.com/2026/10/22/floating-point-addition-and-subtraction-on-intels-8087/

Although you can do basic floating point format operations like addition and subtraction just fine on any CPU, having specialized hardware for it can provide a significant speed boost. Here …read more (https://hackaday.com/2026/10/22/floating-point-addition-and-subtraction-on-intels-8087/)

Japan Launches Mission to Study Martian Moon
https://hackaday.com/2026/10/22/japan-launches-mission-to-study-martian-moon/

Humanity has been sending robotic explorers to Mars since the 1970s, and for our efforts we’ve been rewarded with not only incredible imagery of the Red Planet’s magnificent desolation, but …read more (https://hackaday.com/2026/10/22/japan-launches-mission-to-study-martian-moon/)

KiCad… In The Browser?
https://hackaday.com/2026/10/22/kicad-in-the-browser/

KiCad is a useful tool for designing printed circuit boards, but it’s of no use to you if you can’t install it on the computer you’re on. To get around …read more (https://hackaday.com/2026/10/22/kicad-in-the-browser/)