Image from the project page.
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2022/01/pen-feature.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/01/pen-feature.png?w=800">Hacker [12344321A] has built a clever open-source pen plotter having a frame made from odd-shaped PCB panels (Chinese). It holds an ordinary drafting pen and draws on a small writing …read more (https://hackaday.com/2022/01/21/pen-plotter-from-pcb-panels/)

Apollo Comms Flight Hardware Deep Dive
https://hackaday.com/2022/01/21/apollo-comms-flight-hardware-deep-dive/

from Marc’s YouTube channel
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2022/01/usb-feature.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/01/usb-feature.jpg?w=800">You no doubt recall the incredible Apollo Guidance Computer (AGC) reverse engineering and restoration project featured on the CuriousMarc YouTube channel a few years ago. Well, [Marc] and the team …read more (https://hackaday.com/2022/01/21/apollo-comms-flight-hardware-deep-dive/)

Robot Nerf Alarm Blasts You Awake With Foam
https://hackaday.com/2022/01/21/robot-nerf-alarm-blasts-you-awake-with-foam/

Waking up is hard; sometimes you need more than a little chiming alarm to get you out of bed. When [Vinnie Satriale] started unconsciously switching his alarms off, he went …read more (https://hackaday.com/2022/01/21/robot-nerf-alarm-blasts-you-awake-with-foam/)

Directional Antenna 3-Way
https://hackaday.com/2022/01/21/directional-antenna-3-way/

If you read old antenna books, you’ll probably see the idea of phased vertical antennas. These use certain lengths of coax to control the phase of a signal going to …read more (https://hackaday.com/2022/01/21/directional-antenna-3-way/)

Sending Pics To Grandma, No Smartphone Needed
https://hackaday.com/2022/01/21/sending-pics-to-grandma-no-smartphone-needed/

When it comes to keeping in touch with the grandparents, a lack of familiarity with modern technology can get in the way. [palmerabollo] wanted to share photos with his grandmother, …read more (https://hackaday.com/2022/01/21/sending-pics-to-grandma-no-smartphone-needed/)

Detecting Alpha Particles Using Copper Wire And High Voltage
https://hackaday.com/2022/01/22/detecting-alpha-particles-using-copper-wire-and-high-voltage/

If you want to measure radioactivity, nothing really beats a Geiger counter: compact, rugged, and reasonably easy to use, they’re by far the most commonly used tool to detect ionizing …read more (https://hackaday.com/2022/01/22/detecting-alpha-particles-using-copper-wire-and-high-voltage/)

Online Tool Turns STLs into 3D ASCII Art
https://hackaday.com/2022/01/22/online-tool-turns-stls-into-3d-ascii-art/

If you look hard enough, most of the projects we feature on these pages have some practical value. They may seem frivolous, but there’s usually something that compelled the hacker …read more (https://hackaday.com/2022/01/22/online-tool-turns-stls-into-3d-ascii-art/)