Pre-exploded PSU close-up: shown is inductor with the heatsink it shorted against.
" data-medium-file="https://hackaday.com/wp-content/uploads/2022/02/big_clive_pre-exploded_psu_inductor_heatsink.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/02/big_clive_pre-exploded_psu_inductor_heatsink.jpg?w=800">Recently [Big Clive], everyone’s favorite purveyor of anything electronic that’s dodgy, cheap, cheerful, decidedly crispy or any combination thereof, got sent a very dead external power supply unit. Being clearly …read more (https://hackaday.com/2022/02/21/the-little-replacement-psu-that-could-kill-a-microsoft-surface-and-monitor/)

Rotary Valve Engine Gets a Second Chance, Smokes The Competition
https://hackaday.com/2022/02/21/rotary-valve-engine-gets-a-second-chance-smokes-the-competition/

It’s a dedicated hacker who has the patience to build an engine from scratch. And it’s a borderline obsessed hacker who does it twice. [Meanwhile In the Garage] is of …read more (https://hackaday.com/2022/02/21/rotary-valve-engine-gets-a-second-chance-smokes-the-competition/)

Dummy The Robot Arm Is Not So Dumb
https://hackaday.com/2022/02/21/dummy-the-robot-arm-is-not-so-dumb/

https://www.youtube.com/watch?v=F29vrvUwqS4
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2022/02/Snap-2022-02-19-at-07.38.56.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/02/Snap-2022-02-19-at-07.38.56.png?w=800">[Zhihui Jun] is a name you’re going to want to remember because this Chinese maker has created quite probably one of the most complete open-source robot arms (video in Chinese …read more (https://hackaday.com/2022/02/21/dummy-the-robot-arm-is-not-so-dumb/)

An Off-Grid Makeshift Cell Network
https://hackaday.com/2022/02/21/an-off-grid-makeshift-cell-network/

When traveling into the wilderness with a group of people, it’s good to have a method of communications set up both for safety and practicality. In the past people often …read more (https://hackaday.com/2022/02/21/an-off-grid-makeshift-cell-network/)

Ray Tracing On A Modern TI Graphing Calculator
https://hackaday.com/2022/02/21/ray-tracing-on-a-modern-ti-graphing-calculator/

Something being impractical isn’t any reason not to do it, which is why just about anything with a CPU in it can run Doom by now. For the same reason …read more (https://hackaday.com/2022/02/21/ray-tracing-on-a-modern-ti-graphing-calculator/)

3D Printing Livers
https://hackaday.com/2022/02/21/3d-printing-livers/

The University of Utrecht has a team that is successfully bioprinting “liver units” that are able to do some of the functions of a human liver and may open the …read more (https://hackaday.com/2022/02/21/3d-printing-livers/)

I2C Breathes New Life Into Casio Pocket Calculator
https://hackaday.com/2022/02/21/i2c-breathes-new-life-into-casio-pocket-calculator/

When is a pocket calculator more than just a calculator? [Andrew Menadue] has been pushing the limits of his 1970s Casio FX-502P by adding all sorts of modern functionality via …read more (https://hackaday.com/2022/02/21/i2c-breathes-new-life-into-casio-pocket-calculator/)