We’ve just begun to receive entries to the One Hertz Challenge, but we already have an entry by [Mike Coats] that explicitly demands to be awarded last place: the Metronalmost, …read more (https://hackaday.com/2025/07/15/2025-one-hertz-challenge-metronalmost-is-gunning-for-last-place/)

Pulling at Threads With the Flipper Zero
https://hackaday.com/2025/07/15/pulling-at-threads-with-the-flipper-zero/

Gone are the days when all smart devices were required an internet uplink. The WiFi-enabled IoT fad, while still upon us (no, my coffee scale doesn’t need to be on …read more (https://hackaday.com/2025/07/15/pulling-at-threads-with-the-flipper-zero/)

USB-C Rainbow Ranger: Sensing Volts with Style
https://hackaday.com/2025/07/15/usb-c-rainbow-ranger-sensing-volts-with-style/

USB-C has enabled a lot of great things, most notably removing the no less than three attempts to plug in the cable correctly, but gone are the days of just …read more (https://hackaday.com/2025/07/15/usb-c-rainbow-ranger-sensing-volts-with-style/)

Wendelstein 7-X Sets New Record for the Nuclear Fusion Triple Product
https://hackaday.com/2025/07/15/wendelstein-7-x-sets-new-record-for-the-nuclear-fusion-triple-product/

View inside the vacuum vessel of Wendelstein 7-X in Greifswald, Germany. (Credit: Jan Hosan, MPI for Plasma Physics)
" data-medium-file="https://hackaday.com/wp-content/uploads/2025/07/wendelstein_7-x_interior.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/07/wendelstein_7-x_interior.jpg?w=800">In nuclear fusion, the triple product – also known as the Lawson criterion – defines the point at which a nuclear fusion reaction produces more power than is needed to …read more (https://hackaday.com/2025/07/15/wendelstein-7-x-sets-new-record-for-the-nuclear-fusion-triple-product/)

A History of the Tandy Computers
https://hackaday.com/2025/07/15/a-history-of-the-tandy-computers/

Radio Shack, despite being gone for a number of years, is still in our cultural consciousness. But Tandy, the company behind Radio Shack for many years. Did you ever wonder …read more (https://hackaday.com/2025/07/15/a-history-of-the-tandy-computers/)

Arduino Saves Heat Pump
https://hackaday.com/2025/07/16/arduino-saves-heat-pump/

For home HVAC systems, heat pumps seem to be the way of the future. When compared to electric heating they can be three to four times more efficient, and they …read more (https://hackaday.com/2025/07/16/arduino-saves-heat-pump/)

Caltech Scientists Make Producing Plastics From CO2 More Efficient
https://hackaday.com/2025/07/16/caltech-scientists-make-producing-plastics-from-co2-more-efficient/

For decades there has been this tantalizing idea being pitched of pulling CO2 out of the air and using the carbon molecules for something more useful, like making plastics. Although …read more (https://hackaday.com/2025/07/16/caltech-scientists-make-producing-plastics-from-co2-more-efficient/)

The DEW Line Remembered
https://hackaday.com/2025/07/16/the-dew-line-remembered/