Sound Generation Board Makes the Tunes
https://hackaday.com/2022/05/20/sound-generation-board-makes-the-tunes/

[Mcjack123] has been getting into chiptunes lately and realized that his original interest started in 2018 when he used an Arduino to turn a TI-84 calculator into a sound machine. …read more (https://hackaday.com/2022/05/20/sound-generation-board-makes-the-tunes/)

Practice Makes Perfect for this Ball and Socket Robot
https://hackaday.com/2022/05/20/practice-makes-perfect-for-this-ball-and-socket-robot/

Ball and socket joints are useful, but making a part slide over the surface of a sphere, held by magnets, requires a lot of fiddling to get right. We admire …read more (https://hackaday.com/2022/05/20/practice-makes-perfect-for-this-ball-and-socket-robot/)

Sisyphean Ball Race Robot Toils Gracefully, Magnetically
https://hackaday.com/2022/05/20/sisyphean-ball-race-robot-toils-gracefully-magnetically/

Aren’t ball races and marble runs fun? Wouldn’t they be so much more enjoyable if you didn’t have to climb back up the ladder each time, as it were, and …read more (https://hackaday.com/2022/05/20/sisyphean-ball-race-robot-toils-gracefully-magnetically/)

The Thin-Film Flexible 6502
https://hackaday.com/2022/05/21/the-thin-film-flexible-6502/

While our attention is mostly directed towards ever smaller-integrated silicon circuits providing faster and faster computing, there’s another area of integrated electronics that operates at a much lower speed which …read more (https://hackaday.com/2022/05/21/the-thin-film-flexible-6502/)

TurtleAuth DIY Security Token Gets (Re)designed for Durable, Everyday Use
https://hackaday.com/2022/05/21/turtleauth-diy-security-token-gets-redesigned-for-durable-everyday-use/

[Samuel]’s first foray into making DIY hardware authentication tokens was a great success, but he soon realized that a device intended for everyday carry and use has a few different …read more (https://hackaday.com/2022/05/21/turtleauth-diy-security-token-gets-redesigned-for-durable-everyday-use/)

One Solution, Many Problems
https://hackaday.com/2022/05/21/one-solution-many-problems/

You might think you’re lucky when one of your problems has multiple solutions, and you get to pick and choose, but you’re even luckier when one solution has many problems! …read more (https://hackaday.com/2022/05/21/one-solution-many-problems/)

A Receive Antenna Switcher With An Espressif Brain
https://hackaday.com/2022/05/21/a-receive-antenna-switcher-with-an-espressif-brain/