Cassette players and tapes are fertile hacking ground. One reason is that their electromechanical and analog nature provides easy ways to fiddle with their operation. For example, slow down the …read more (https://hackaday.com/2023/04/24/messing-with-a-cassette-player-never-sounded-so-good/)

$60 Robot Arm is Compact
https://hackaday.com/2023/04/24/60-robot-arm-is-compact/

Thanks to 3D printing and inexpensive controllers, a robot arm doesn’t need to break the bank anymore. Case in point? [Build Some Stuff] did a good-looking compact arm with servos …read more (https://hackaday.com/2023/04/24/60-robot-arm-is-compact/)

Testing Part Stiffness? No Need To Re-invent the Bending Rig
https://hackaday.com/2023/04/24/testing-part-stiffness-no-need-to-re-invent-the-bending-rig/

If one is serious about testing the stiffness of materials or parts, there’s nothing quite like doing your own tests. And thanks to [JanTec]’s 3-Point Bending Test rig, there’s no …read more (https://hackaday.com/2023/04/24/testing-part-stiffness-no-need-to-re-invent-the-bending-rig/)

Half Crystal Radio, Half Regenerative Radio
https://hackaday.com/2023/04/24/half-crystal-radio-half-regenerative-radio/

A rite of passage in decades past for the electronics experimenter was the crystal radio. Using very few components and a long wire antenna, such a radio could pick up …read more (https://hackaday.com/2023/04/24/half-crystal-radio-half-regenerative-radio/)

Make Your ESP32 Talk Like It’s the 80s Again
https://hackaday.com/2023/04/25/make-your-esp32-talk-like-its-the-80s-again/

80s-era electronic speech certainly has a certain retro appeal to it, but it can sometimes be a useful data output method since it can be implemented on very little hardware. …read more (https://hackaday.com/2023/04/25/make-your-esp32-talk-like-its-the-80s-again/)

3D Print For Extreme Temperatures (But Only If You’re NASA)
https://hackaday.com/2023/04/25/3d-print-for-extreme-temperatures-but-only-if-youre-nasa/

At the level pursued by many Hackaday readers, the advent of affordable 3D printing has revolutionised prototyping, as long as the resolution of a desktop printer is adequate and the …read more (https://hackaday.com/2023/04/25/3d-print-for-extreme-temperatures-but-only-if-youre-nasa/)

FET: The Friendly Efficient Transistor
https://hackaday.com/2023/04/25/fet-the-friendly-efficient-transistor/

If you ever work with a circuit that controls a decent amount of current, you will often encounter a FET – a Field-Effect Transistor. Whether you want to control a …read more (https://hackaday.com/2023/04/25/fet-the-friendly-efficient-transistor/)

Low-Cost RF Power Sensor Gets All the Details Right
https://hackaday.com/2023/04/25/low-cost-rf-power-sensor-gets-all-the-details-right/