Millimeter-wave Radars used in modern cars for cruise control and collision avoidance are usually designed to work at ranges on the order of 100 meters or so. With some engineering …read more (https://hackaday.com/2022/02/12/machining-waveguides-for-122-ghz-operation-is-delicate-work/)

Epoxy Resin Night Light Is An Amazing Ocean-Themed Build
https://hackaday.com/2022/02/12/epoxy-resin-night-light-is-an-amazing-ocean-themed-build/

We’ve all seen those “river” tables where a lovely old piece of tree is filled with some blue resin to create a water-like aesthetic. This project from [smartyleowl] takes that …read more (https://hackaday.com/2022/02/12/epoxy-resin-night-light-is-an-amazing-ocean-themed-build/)

Sticker Brings the Heat
https://hackaday.com/2022/02/13/sticker-brings-the-heat/

[Carl] is always looking at making heater plates for PCB reflow and other applications. In his latest video, he shows how he is using thin flexible PCBs with adhesive backs …read more (https://hackaday.com/2022/02/13/sticker-brings-the-heat/)

3D Printing Rainbows
https://hackaday.com/2022/02/13/3d-printing-rainbows/

[The Action Lab] had a very serious technical problem. His daughter wanted to 3D print sparkly unicorns. But how do you make a 3D print sparkly? Turns out, he had …read more (https://hackaday.com/2022/02/13/3d-printing-rainbows/)

Weather Station Predicts Air Quality
https://hackaday.com/2022/02/13/weather-station-predicts-air-quality/

Measuring air quality at any particular location isn’t too complicated. Just a sensor or two and a small microcontroller is generally all that’s needed. Predicting the upcoming air quality is …read more (https://hackaday.com/2022/02/13/weather-station-predicts-air-quality/)

Pump up the Resin
https://hackaday.com/2022/02/13/pump-up-the-resin/

Sometimes the best ideas are simple and seem obvious after you’ve heard them. [Danny] showed us a great idea that fits that description. He uses a peristaltic pump to move …read more (https://hackaday.com/2022/02/13/pump-up-the-resin/)

No LEDs Required for This Servo-Controlled Larson Scanner
https://hackaday.com/2022/02/13/no-leds-required-for-this-servo-controlled-larson-scanner/

All things considered, it’s pretty easy to get one LED is a strip to light up sequentially, and have it bounce back and forth. Turning that simple animation into a …read more (https://hackaday.com/2022/02/13/no-leds-required-for-this-servo-controlled-larson-scanner/)