DIY Calibration Target for Electron Microscopes
https://hackaday.com/2025/06/12/diy-calibration-target-for-electron-microscopes/

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/