Increasing PV Solar Cell Efficiency Through Cooling
https://hackaday.com/2023/01/14/increasing-pv-solar-cell-efficiency-through-cooling/

An unavoidable aspect of photovoltaic (PV) solar panels is that they become less efficient when they warm up. As [Tech Ingredients] explains in a new video, the reason for this …read more (https://hackaday.com/2023/01/14/increasing-pv-solar-cell-efficiency-through-cooling/)

DIY Magnet Handling Tool Puts An End To Placement Errors
https://hackaday.com/2023/01/14/diy-magnet-handling-tool-puts-an-end-to-placement-errors/

I’m sure we can all agree that the worst time to find out a magnet is the wrong way around is after glue has been applied. With that in mind, [erick.siders] …read more (https://hackaday.com/2023/01/14/diy-magnet-handling-tool-puts-an-end-to-placement-errors/)

Too Many Pixels
https://hackaday.com/2023/01/14/too-many-pixels/

Sometimes simpler is more impressive than complicated, and part of this is certainly due to Arthur C. Clarke’s third law: “Any sufficiently advanced technology is indistinguishable from magic.”. It’s counter-intuitive, …read more (https://hackaday.com/2023/01/14/too-many-pixels/)

Homebrew Telephone Exchange Keeps the Family in Touch, in the House and Beyond
https://hackaday.com/2023/01/14/homebrew-telephone-exchange-keeps-the-family-in-touch-in-the-house-and-beyond/

It doesn’t happen often, but every once in a while we stumble upon someone who has taken obsolete but really cool phone-switching equipment and built a private switched telephone in …read more (https://hackaday.com/2023/01/14/homebrew-telephone-exchange-keeps-the-family-in-touch-in-the-house-and-beyond/)

Make Your Own Pot and Encoder Knobs, Without Reinventing Them
https://hackaday.com/2023/01/14/make-your-own-pot-and-encoder-knobs-without-reinventing-them/

Rotary potentiometers, switches, and encoders all share a basic design: adjustment is done via a shaft onto which a knob is attached, and knobs are sold separately. That doesn’t mean …read more (https://hackaday.com/2023/01/14/make-your-own-pot-and-encoder-knobs-without-reinventing-them/)

Smart LED Curtain Brings Sprites To Your Windows
https://hackaday.com/2023/01/14/smart-led-curtain-brings-sprites-to-your-windows/

Anybody who has ever seen a video wall (and who hasn’t?) will be familiar with the idea of making large-scale illuminated images from individual coloured lights. But how many of …read more (https://hackaday.com/2023/01/14/smart-led-curtain-brings-sprites-to-your-windows/)

Conductive Ink Based on a Simple Idea
https://hackaday.com/2023/01/14/conductive-ink-based-on-a-simple-idea/