Recycling of Portland Cement and Steel in Electric Arc Furnaces
https://hackaday.com/2024/05/27/recycling-of-portland-cement-and-steel-in-electric-arc-furnaces/

The use of concrete and steel have both become the bedrock of modern-day construction, which of course also means that there is a lot of both which ends up as …read more (https://hackaday.com/2024/05/27/recycling-of-portland-cement-and-steel-in-electric-arc-furnaces/)

An Improved Spectrometer, No Lasers Required
https://hackaday.com/2024/05/27/an-improved-spectrometer-no-lasers-required/

Here at Hackaday, we love it when someone picks up the ball from a previous project and runs with it. That’s what we’re all about, really — putting out cool …read more (https://hackaday.com/2024/05/27/an-improved-spectrometer-no-lasers-required/)

Adafruit Badges Turned Electronic Invitations
https://hackaday.com/2024/05/28/adafruit-badges-turned-electronic-invitations/

Despite what you might have heard, even the most devout Hackaday readers may eventually find themselves getting married. Should you ever find yourself in a situation where you need to …read more (https://hackaday.com/2024/05/28/adafruit-badges-turned-electronic-invitations/)

Feast Your Eyes on These AI-Generated Sounds
https://hackaday.com/2024/05/28/feast-your-eyes-on-these-ai-generated-sounds/

The radio hackers in the audience will be familiar with a spectrogram display, but for the uninitiated, it’s basically a visual representation of how a range of frequencies are changing …read more (https://hackaday.com/2024/05/28/feast-your-eyes-on-these-ai-generated-sounds/)

The Tragic Story Of The Ill-Fated Supergun
https://hackaday.com/2024/05/28/the-tragic-story-of-the-ill-fated-supergun/

In the annals of ambitious engineering projects, few have captured the imagination and courted controversy quite like Gerald Bull’s Supergun. Bull, a Canadian artillery expert, envisioned a gun that could …read more (https://hackaday.com/2024/05/28/the-tragic-story-of-the-ill-fated-supergun/)

Rotary Phone Lives on as Arduino Kitchen Timer
https://hackaday.com/2024/05/28/rotary-phone-lives-on-as-arduino-kitchen-timer/

It’s safe to say that few people still use rotary phones on a daily basis. Hell, most of us don’t even use landline telephones anymore. But just because these classic …read more (https://hackaday.com/2024/05/28/rotary-phone-lives-on-as-arduino-kitchen-timer/)

Keebin’ with Kristina: The One with the Auto Harp Typewriter
https://hackaday.com/2024/05/28/keebin-with-kristina-the-one-with-the-auto-harp-typewriter/