A Practical Open Source Air Purifier
https://hackaday.com/2024/01/16/a-practical-open-source-air-purifier/

In the years since the start of the coronavirus pandemic, it’s fair to say we’ve all become a lot more aware of the air quality surrounding us. Many of us …read more (https://hackaday.com/2024/01/16/a-practical-open-source-air-purifier/)

Ask Hackaday: Why Are Self-Checkouts Failing?
https://hackaday.com/2024/01/16/ask-hackaday-why-are-self-checkouts-failing/

Most people who read Hackaday have positive feelings about automation. (Notice we said most.) How many times have you been behind someone in a grocery store line waiting for them …read more (https://hackaday.com/2024/01/16/ask-hackaday-why-are-self-checkouts-failing/)

$50 10Gbps Mesh Network uses USB4
https://hackaday.com/2024/01/16/50-10gbps-mesh-network-uses-usb4/

You want to build a cluster of computers, but you need a high-speed network fabric that can connect anything to anything. Big bucks, right? [Fang-Pen] developed a 10 Gbps full-mesh …read more (https://hackaday.com/2024/01/16/50-10gbps-mesh-network-uses-usb4/)

Kinetic Clock Is A Clean Modern Way To Tell Time
https://hackaday.com/2024/01/16/kinetic-clock-is-a-clean-modern-way-to-tell-time/

Hackers and makers aren’t usually too interested in basic round analog clocks. They tend to prefer building altogether more arcane and complicated contraptions to display numbers for the telling of …read more (https://hackaday.com/2024/01/16/kinetic-clock-is-a-clean-modern-way-to-tell-time/)

Reverse-Engineering A Russian Tornado-S Guidance Circuit Board
https://hackaday.com/2024/01/16/reverse-engineering-a-russian-tornado-s-guidance-circuit-board/

With Russian military hardware quite literally raining down onto the ground in Ukraine, it’s little wonder that a sizeable part of PCBs and more from these end up being sold …read more (https://hackaday.com/2024/01/16/reverse-engineering-a-russian-tornado-s-guidance-circuit-board/)

Need a Refresher on RMS?
https://hackaday.com/2024/01/16/need-a-refresher-on-rms/

If you mostly deal with DC current, you might not think much of root mean square or RMS measurements. Sure, you’ve seen meters that have “true RMS” settings, but what …read more (https://hackaday.com/2024/01/16/need-a-refresher-on-rms/)

Check Out This PDP-11 Running Unix With A Teletype Terminal
https://hackaday.com/2024/01/16/check-out-this-pdp-11-running-unix-with-a-teletype-terminal/