The original Roomba robotic vacuum cleaner led to loads of clones and lookalikes over the years, and one of them is the ALEE mopping “robot”. [Raymond] tears it down and reveals …read more (https://hackaday.com/2022/12/20/seriously-dont-buy-this-mopping-robot/)

All About USB-C: Connector Mechanics
https://hackaday.com/2022/12/20/all-about-usb-c-connector-mechanics/

There’s two cases when hackers have to think about USB-C connector mechanics. The first is when a USB-C connector physically breaks, and the second is when we need to put …read more (https://hackaday.com/2022/12/20/all-about-usb-c-connector-mechanics/)

Single Photon Detection with Photomultipliers
https://hackaday.com/2022/12/20/single-photon-detection-with-photomultipliers/

Unless you are an audiophile, you likely think of tubes as mostly relegated to people who work on old technology. However, photomultiplier tubes are still useful compared to more modern …read more (https://hackaday.com/2022/12/20/single-photon-detection-with-photomultipliers/)

More Detail on That Fantastic Lego OLED Brick
https://hackaday.com/2022/12/20/more-detail-on-that-fantastic-lego-oled-brick/

It’s always great when we get a chance to follow up on a previous project with more information, or further developments. So we’re happy that [“Ancient” James Brown] just dropped a …read more (https://hackaday.com/2022/12/20/more-detail-on-that-fantastic-lego-oled-brick/)

NTC Thermistor to ThingSpeak Meter Makes a Great IoT Starter Project
https://hackaday.com/2022/12/20/ntc-thermistor-to-thingspeak-meter-makes-a-great-iot-starter-project/

There are a lot of IoT solutions and frameworks out there, and [Davide] demonstrates how to make a simple data logging and tracking application with his ESP8266-to-ThingSpeak project, which reads …read more (https://hackaday.com/2022/12/20/ntc-thermistor-to-thingspeak-meter-makes-a-great-iot-starter-project/)

The Gallium Nitride Revolution
https://hackaday.com/2022/12/20/the-gallium-nitride-revolution/

[Asianometry] has been learning about gallium nitride semiconductors and shares what he knows in an informative video you can see below. This semiconductor material has a much higher bandgap voltage …read more (https://hackaday.com/2022/12/20/the-gallium-nitride-revolution/)

The Coleman Z80 is a Modern Take on a 1970s Computer
https://hackaday.com/2022/12/20/the-coleman-z80-is-a-modern-take-on-a-1970s-computer/

[Joshua Coleman] likes to design his own computers. Sometimes, that means drawing up bus architectures,  memory maps and I/O port pinouts. Other times, he can focus his efforts more on …read more (https://hackaday.com/2022/12/20/the-coleman-z80-is-a-modern-take-on-a-1970s-computer/)