Cable Modem Turned Spectrum Analyzer
https://hackaday.com/2021/08/27/cable-modem-turned-spectrum-analyzer/

Hopefully by now most of us know better than to rent a modem from an internet service provider. Buying your own and using it is almost always an easy way …read more (https://hackaday.com/2021/08/27/cable-modem-turned-spectrum-analyzer/)

Simple Fan Controller Helps Apple II to Beat the Heat
https://hackaday.com/2021/08/27/cool-your-apple-ii/

In its day, the Apple II computer didn’t typically require active cooling. However, the increasing scarcity of replacement hardware convinced [Joshua Coleman] to come up with a more robust active …read more (https://hackaday.com/2021/08/27/cool-your-apple-ii/)

eBike Conversion on a Budget Uses Skateboard Motor
https://hackaday.com/2021/08/28/ebike-conversion-on-a-budget-uses-skateboard-motor/

[Dave Schneider] has been chasing an electric-bike build for more than 10 years now. When he first started looking into it back in 2009, the cost was prohibitive. But think …read more (https://hackaday.com/2021/08/28/ebike-conversion-on-a-budget-uses-skateboard-motor/)

Grappling Hook Robot Swings Like Spiderman
https://hackaday.com/2021/08/28/grappling-hook-robot-swings-like-spiderman/

We’ll admit it is a bit of a gimmick, but [Adam Beedle’s] Spider-Bot did make us smile. The little robot can launch a “web” and use it to swing. It …read more (https://hackaday.com/2021/08/28/grappling-hook-robot-swings-like-spiderman/)

Who Owns the Machine Anyway?
https://hackaday.com/2021/08/28/who-owns-the-machine-anyway/

The story of the McDonalds’ frozen treat machine involves technology, trade secrets, inside business dealings, franchiser/franchisee friction, and an alleged NDA violation. In short: lots of money and lawyers. But …read more (https://hackaday.com/2021/08/28/who-owns-the-machine-anyway/)

Never Lose a Piece With 3D Printed Sliding Puzzles
https://hackaday.com/2021/08/28/never-lose-a-piece-with-3d-printed-sliding-puzzles/

Have you ever been about to finish a puzzle, when suddenly you realize there are more holes left than you have pieces? With [Nikolaos’s] 3D printed sliding puzzles, this will …read more (https://hackaday.com/2021/08/28/never-lose-a-piece-with-3d-printed-sliding-puzzles/)

Binary Clock Lets the Nixies Glow
https://hackaday.com/2021/08/28/binary-clock-lets-the-nixies-glow/