Contactless payment by means of NFC-enabled bank cards has made our everyday transactions far more convenient over the last decade, but there still remains the tedious task of finding the …read more (https://hackaday.com/2021/12/10/an-nfc-antenna-ring-with-a-chip-as-its-jewel/)

Lasers Make PCBs the Old Fashioned Way
https://hackaday.com/2021/12/10/lasers-make-pcbs-the-old-fashioned-way/

There are many ways to create printed circuit boards, but one of the more traditional ways involves using boards coated with photoresist and exposing the desired artwork on the board, …read more (https://hackaday.com/2021/12/10/lasers-make-pcbs-the-old-fashioned-way/)

Ninja Art: PCB Nightlight Jutsu!
https://hackaday.com/2021/12/10/ninja-art-pcb-nightlight-jutsu/

This latest PCB artwork comes to you courtesy of [Arnov]. His Naruto nightlight is definitely going to get your anime-loving friends’ attention. The LED illumination styles are controlled by an …read more (https://hackaday.com/2021/12/10/ninja-art-pcb-nightlight-jutsu/)

Build Your Own Submarine
https://hackaday.com/2021/12/10/build-your-own-submarine/

If you are tried of building things that fly, why not try a submarine like [DIYPerks] did? As you can see in the video below, the key is to control …read more (https://hackaday.com/2021/12/10/build-your-own-submarine/)

Arduino Drives Faux Spirograph
https://hackaday.com/2021/12/10/arduino-drives-faux-spirograph/

The holidays always remind us of our favorite toys from when we were kids. Johnny Astro, an Erector set, and — of course — a Spirograph. [CraftDiaries] has an Arduino …read more (https://hackaday.com/2021/12/10/arduino-drives-faux-spirograph/)

Controller Swaps Can Save an HDD If You Do It Right
https://hackaday.com/2021/12/11/controller-swaps-can-save-an-hdd-if-you-do-it-right/

Hard drives are fragile and reliable all at once. It’s entirely possible to have a hard drive fail, even if your data is still in perfect condition on the magnetic …read more (https://hackaday.com/2021/12/11/controller-swaps-can-save-an-hdd-if-you-do-it-right/)

Snip Your Way to DIY PCB Castellations
https://hackaday.com/2021/12/11/snip-your-way-to-diy-pcb-castellations/

Castellated PCB edges are kind of magical. The plated semicircular features are a way to make a solid, low-profile connection from one board to another, and the way solder flows …read more (https://hackaday.com/2021/12/11/snip-your-way-to-diy-pcb-castellations/)