Heart Rate Measurement via WiFi, The DIY Way
https://hackaday.com/2025/09/23/heart-rate-measurement-via-wifi-the-diy-way/

A few weeks back, we reported on a research group that figured out how to measure heartrate using perturbations in WiFi signals. [Nick Bild] was interested in this so-called “Pulse-Fi” …read more (https://hackaday.com/2025/09/23/heart-rate-measurement-via-wifi-the-diy-way/)

The Impending CRT Display Revival Will Be Televised
https://hackaday.com/2025/09/23/the-impending-crt-display-revival-will-be-televised/

Until the 2000s vacuum tubes practically ruled the roost. Even if they had surrendered practically fully to semiconductor technology like integrated circuits, there was no escaping them in everything from …read more (https://hackaday.com/2025/09/23/the-impending-crt-display-revival-will-be-televised/)

Using Moondream AI to Make Your Pi “See” Like a Human
https://hackaday.com/2025/09/23/using-moondream-ai-to-make-your-pi-see-like-a-human/

[Jaryd] from Core Electronics shows us human-like computer vision with Moondream on the Pi 5. Using the Moondream visual language model, which runs directly on your Raspberry Pi, and not …read more (https://hackaday.com/2025/09/23/using-moondream-ai-to-make-your-pi-see-like-a-human/)

2025 Hackaday Superconference: Announcing our Workshops and Tickets
https://hackaday.com/2025/09/23/2025-hackaday-superconference-announcing-our-workshops-and-tickets/

Can you feel the nip of fall in the air? That can only mean one thing: Supercon is just around the corner. The next few weeks are going to bring …read more (https://hackaday.com/2025/09/23/2025-hackaday-superconference-announcing-our-workshops-and-tickets/)

Automatic Feeder Keeps Fish Sated
https://hackaday.com/2025/09/23/automatic-feeder-keeps-fish-sated/

[Noisy Electrons] is a maker who also likes to keep fish. He sometimes needs to travel and keep his fish fed in the meantime, so he created an automated solution …read more (https://hackaday.com/2025/09/23/automatic-feeder-keeps-fish-sated/)

Calculator Battery Mod Lets You Go the Distance
https://hackaday.com/2025/09/23/calculator-battery-mod-lets-you-go-the-distance/

Disposable batteries seem so 1990s. Sure, it’s nice to be able to spend a couple of bucks at the drugstore and get a flashlight or TV remote back in the …read more (https://hackaday.com/2025/09/23/calculator-battery-mod-lets-you-go-the-distance/)

Build Your Own 6K Camera
https://hackaday.com/2025/09/23/build-your-own-6k-camera/

[Curious Scientist] has been working with some image sensors. The latest project around it is a 6K camera. Of course, the sensor gives you a lot of it, but it …read more (https://hackaday.com/2025/09/23/build-your-own-6k-camera/)