Collaborate Disseminate
Lasers are pretty much magic — it’s all done with mirrors. Not every laser, of course, but in the 1980s, the most common lasers in commercial applications were probably the …read more Continue reading More Mirrors (and a Little Audio) Mean More Laser Power
Saltwater is plentiful, but no good for drinking. Desalinization is the obvious solution, but a big problem isn’t taking the salt out, it’s where all that leftover salt goes. Excess …read more Continue reading Passive Desalination Discovers How To Avoid Salt-Clogging
When first learning about and building electronic circuits, the first things all of us come across are passive components such as resistors, capacitors, and inductors. These have easily-understandable properties and …read more Continue reading Investigating The Fourth Passive Component
A thermoelectric generator (TEG) can turn a temperature difference into electricity, and while temperature differentials abound in our environment, it’s been difficult to harness them into generate practical and stable …read more Continue reading Passively Generating Power Day and Night Takes The Right Parts
[Marius Hornberger] has been busy hacking his “Hammer” CNC router again, and now it sports a much desired feature — an automatic tool-changer. Having wanted one for a while, [Marius] …read more Continue reading A Passive Automatic CNC Tool Changer
[Billy] has a special interest in passive hydroponics (also known as the Kratky method), which is a way of growing plants in nutrient-rich water that does not circulate. As the …read more Continue reading DIY Float Valve for Passive Hydroponics Leverages 3D Printing
Using circuit simulating software like SPICE can be a powerful tool for modeling the behavior of a circuit in the real world. On the other hand, it’s not always necessary to have all of the features of SPICE available all …read more
Continue reading Circuit Impedance Calculations Without Cumbersome Simulations
Passive homes are a fairly recent trend in home building, but promise a future with minimal energy inputs in our day-to-day. One of the challenges in this year’s Hackaday Prize is to envision ways to add utility to earthen homes often used in refugee camps where there is a housing …read more
If your neighborhood is anything like ours, walking across the street is like taking your life in your own hands. Drivers are increasingly unconcerned by such trivialities as speed limits or staying under control, and anything goes when they need to connect Point A to Point B in the least …read more
Continue reading Keep an Eye on the Neighborhood with This Passive Radar
If the great Samuel Clemens were alive today, he might modify the famous meteorological quip often attributed to him to read, “Everyone complains about weather forecasts, but I can’t for the life of me see why!” In his day, weather forecasting was as much guesswork as anything else, reading the …read more
Continue reading How 5G is Likely to Put Weather Forecasting at Risk