We know what you’re thinking: with so many wireless modules available for just pennies, trying to create a physical data link using ultrasonic transducers like [Damian Bonicatto] did for a …read more (https://hackaday.com/2024/01/13/skip-the-radio-with-this-software-defined-ultrasound-data-link/)

Tips For 3D Printing Watertight Test Tubes
https://hackaday.com/2024/01/13/tips-for-3d-printing-watertight-test-tubes/

[DaveMakesStuff] uses 3D printed test tubes for plants and similar purposes, and he’s shared how to make them on a 3D printer, complete with different models each optimized for different …read more (https://hackaday.com/2024/01/13/tips-for-3d-printing-watertight-test-tubes/)

Simulate Running a Small Hardware Business with Hardware Hustle
https://hackaday.com/2024/01/13/simulate-running-a-small-hardware-business-with-hardware-hustle/

[Oskitone]’s Hardware Hustle is a printable roll-and-write tabletop game that can be played on a single sheet of paper. It simulates attempting to run a small hardware business sustainably. Buy …read more (https://hackaday.com/2024/01/13/simulate-running-a-small-hardware-business-with-hardware-hustle/)

Reverse Engineering Smart Meters, Now with More Fuming Nitric Acid
https://hackaday.com/2024/01/13/reverse-engineering-smart-meters-now-with-more-fuming-nitric-acid/

If you’re lucky, reverse engineering can be a messy business. Sure, there’s something to be said for attacking and characterizing an unknown system and leaving no trace of having been …read more (https://hackaday.com/2024/01/13/reverse-engineering-smart-meters-now-with-more-fuming-nitric-acid/)

How to Operate a 500KW Transmitter
https://hackaday.com/2024/01/13/how-to-operate-a-500kw-transmitter/

Crosley was a famous name in radio for more than one reason. The National VOA Museum of Broadcasting has a video telling [Powel Crosley Jr.’s] story, and the story behind …read more (https://hackaday.com/2024/01/13/how-to-operate-a-500kw-transmitter/)

Why The iPad Doesn’t Have A Calculator
https://hackaday.com/2024/01/14/why-the-ipad-doesnt-have-a-calculator/

The iPad featured Apple’s first system-on-chip (SoC) designed in-house.
" data-medium-file="https://hackaday.com/wp-content/uploads/2020/06/applearm-a4.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2020/06/applearm-a4.jpg?w=800">For the handful among us who have an iPad tablet from Apple, some may have figured out by now that it lacks a feature that has come standard on any …read more (https://hackaday.com/2024/01/14/why-the-ipad-doesnt-have-a-calculator/)

Möbius Tank’s Twisty Treads Became Bendy
https://hackaday.com/2024/01/14/mobius-tanks-twisty-treads-became-bendy/

[James Bruton]’s unusual Möbius Tank has gotten a little more unusual with the ability to bend itself, which allows it to perform turns even though it is a single-track vehicle. …read more (https://hackaday.com/2024/01/14/mobius-tanks-twisty-treads-became-bendy/)