You’ve got a laser cutter. You’ve got a 3D printer. What do you make? [Ayushmaan45] suggests a telescope. The modest instrument isn’t going to do serious astronomy with only 8X …read more (https://hackaday.com/2025/10/17/diy-telescope-uses-maker-tools/)

Hackaday Podcast Episode 342: Poopless Prints, Radio in Your Fillings, and One Hyperspectral Pixel at a Time
https://hackaday.com/2025/10/17/hackaday-podcast-episode-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-time/

It was Elliot and Dan on the podcast today, taking a look at the best the week had to offer in terms of your hacks. We started with surprising news …read more (https://hackaday.com/2025/10/17/hackaday-podcast-episode-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-time/)

2025 Component Abuse Challenge: Boosting Voltage With Just a Wire
https://hackaday.com/2025/10/17/2025-component-abuse-challenge-boosting-voltage-with-just-a-wire/

Switching power supplies are familiar to Hackaday readers, whether they have a fairly conventional transformer, are a buck, a boost, or a flyback design. There’s nearly always an inductor involved, …read more (https://hackaday.com/2025/10/17/2025-component-abuse-challenge-boosting-voltage-with-just-a-wire/)

F/0.38 Camera Lens Made With Oil Immersion Microscope Objective
https://hackaday.com/2025/10/17/f-0-38-camera-lens-made-with-oil-immersion-microscope-objective/

Over on YouTube [Applied Science] shows us how to make an f/0.38 camera lens using an oil immersion microscope objective. The f-number of a lens indicates how well it will …read more (https://hackaday.com/2025/10/17/f-0-38-camera-lens-made-with-oil-immersion-microscope-objective/)

Radio Astronomy in the Palm of Your Hand
https://hackaday.com/2025/10/17/radio-astronomy-in-the-palm-of-your-hand/

When you think of a radio telescope, you usually think of a giant dish antenna pointing skyward. But [vhuvanmakes] built Wavy-Scope, a handheld radio telescope that can find the Sun …read more (https://hackaday.com/2025/10/17/radio-astronomy-in-the-palm-of-your-hand/)

A New Way to Make (Almost) Holograms with Lasers
https://hackaday.com/2025/10/17/a-new-way-to-make-almost-holograms-with-lasers/

The spectrum of laser technologies available to hackers has gradually widened from basic gas lasers through CO2 tubes, diode lasers, and now fiber lasers. One of the newer entries is …read more (https://hackaday.com/2025/10/17/a-new-way-to-make-almost-holograms-with-lasers/)

Channel Surfing Nostalgia Machine
https://hackaday.com/2025/10/17/channel-surfing-nostalgia-machine/

As any generation of people get older, they tend to look back fondly on their formative years when there was less responsibility and more wonder. Even if things have objectively …read more (https://hackaday.com/2025/10/17/channel-surfing-nostalgia-machine/)

Hacking a Banned Chinese Security Camera
https://hackaday.com/2025/10/18/hacking-a-banned-chinese-security-camera/