Canned Air is Unexpectedly Supersonic
https://hackaday.com/2024/02/18/canned-air-is-unexpectedly-supersonic/

How fast is the gas coming out from those little duster tubes of canned air? Perhaps faster than one might think! It’s supersonic (video, embedded below) as [Cylo’s Garage] shows …read more (https://hackaday.com/2024/02/18/canned-air-is-unexpectedly-supersonic/)

Extreme Waterproof 3D Prints
https://hackaday.com/2024/02/18/extreme-waterproof-3d-prints/

Since the crew at [CPSdrone] likes to build underwater drones — submarines, in other words — they need to 3D print waterproof hulls. At first, they thought there were several …read more (https://hackaday.com/2024/02/18/extreme-waterproof-3d-prints/)

Doubling the CPU Speed of the TRS-80 Model 100 With a Mod Board
https://hackaday.com/2024/02/18/doubling-the-cpu-speed-of-the-trs-80-model-100-with-a-mod-board/

The TRS-80 Model 100 was released in 1983, featuring an 80C85 CPU that can run at 5 MHz, but only runs at a hair under 2.5 MHz, due to 1:2 …read more (https://hackaday.com/2024/02/18/doubling-the-cpu-speed-of-the-trs-80-model-100-with-a-mod-board/)

3D Print Train Wheels For Garden Railway
https://hackaday.com/2024/02/18/3d-print-train-wheels-for-garden-railway/

There’s something magical about a train, whether you call it a railway or a railroad, plenty of us have hankered after our own little piece of line on which to …read more (https://hackaday.com/2024/02/18/3d-print-train-wheels-for-garden-railway/)

No Inductors Needed for This Simple, Clean Twin-Tee Oscillator
https://hackaday.com/2024/02/18/no-inductors-needed-for-this-simple-clean-twin-tee-oscillator/

If there’s one thing that amateur radio operators are passionate about, it’s the search for the perfect sine wave. Oscillators without any harmonics are an important part of spectrum hygiene, …read more (https://hackaday.com/2024/02/18/no-inductors-needed-for-this-simple-clean-twin-tee-oscillator/)

Hackaday Links: February 18, 2024
https://hackaday.com/2024/02/18/hackaday-links-february-18-2024/

So it turns out that walking around with $4,000 worth of hardware on your head isn’t quite the peak technology experience that some people thought it would be. We’re talking …read more (https://hackaday.com/2024/02/18/hackaday-links-february-18-2024/)

Low-Cost Saliva-based Biosensor For Cancer Detection
https://hackaday.com/2024/02/18/low-cost-saliva-based-biosensor-for-cancer-detection/