It’s a problem that few of us will ever face, but if you ever have to calibrate your scanning electron microscope, you’ll need a resolution target with a high contrast …read more (https://hackaday.com/2025/06/12/diy-calibration-target-for-electron-microscopes/)

Open Source CAD in the Browser
https://hackaday.com/2025/06/12/open-source-cad-in-the-browser/

Some people love tools in their browsers. Others hate them. We certainly do like to see just how far people can push the browser and version 0.6 of CHILI3D, a …read more (https://hackaday.com/2025/06/12/open-source-cad-in-the-browser/)

Crowdsourcing SIGINT: Ham Radio at War
https://hackaday.com/2025/06/12/crowdsourcing-sigint-ham-radio-at-war/

I often ask people: What’s the most important thing you need to have a successful fishing trip? I get a lot of different answers about bait, equipment, and boats. Some …read more (https://hackaday.com/2025/06/12/crowdsourcing-sigint-ham-radio-at-war/)

Learning the Basics of Astrophotography Editing
https://hackaday.com/2025/06/12/learning-the-basics-of-astrophotography-editing/

Astrophotography isn’t easy. Even with good equipment, simply snapping a picture of the night sky won’t produce anything particularly impressive. You’ll likely just get a black void with a few …read more (https://hackaday.com/2025/06/12/learning-the-basics-of-astrophotography-editing/)

End of an Era: NOAA’s Polar Sats Wind Down Operations
https://hackaday.com/2025/06/12/end-of-an-era-noaas-polar-sats-wind-down-operations/

Since October 1978, the National Oceanic and Atmospheric Administration (NOAA) has operated its fleet of Polar-orbiting Operational Environmental Satellites (POES) — the data from which has been used for a …read more (https://hackaday.com/2025/06/12/end-of-an-era-noaas-polar-sats-wind-down-operations/)

2025 Pet Hacks Contest: Cat at the Door
https://hackaday.com/2025/06/12/2025-pet-hacks-contest-cat-at-the-door/

This Pet Hacks Contest entry from [Andrea] opens the door to a great collaboration of sensors to solve a problem. The Cat At The Door project’s name is a bit …read more (https://hackaday.com/2025/06/12/2025-pet-hacks-contest-cat-at-the-door/)

The Billionth Repository On GitHub is Really Shitty
https://hackaday.com/2025/06/12/the-billionth-repository-on-github-is-really-shitty/

What’s the GitHub repository you have created that you think is of most note? Which one do you think of as your magnum opus, the one that you will be …read more (https://hackaday.com/2025/06/12/the-billionth-repository-on-github-is-really-shitty/)

COTS Components Combine to DIY Solar Power Station
https://hackaday.com/2025/06/12/cots-components-combine-to-diy-solar-power-station/