If you are tired of reaching for your tiny volume control knob to adjust your music when using your computer look no further than these projects by Engineering Nonsense and DIY Perks. The top one uses a DIGISpark board and a rotary encoder to adjust the volume via USB and the one below uses a potentiometer to adjust the analog output of your signal feeding your amplifier.
LiPo batteries are used everywhere. You might think twice before you toss them around like the regular alkaline batteries that are much safer and very common. GreatScott shows us how accurate the built in protection circuits are. You probably won’t be surprised to learn that they are not very accurate and often take much more current than expected to trip.
There is a theory that you can’t fold paper more then 7 times. There was even a Mythbuster Episode about it. By pressing the paper between folds it is easier to work with but even with the power of this press the experiment fails when the paper basically explodes out of the press.
Have a look at this interesting Plasma Arc Vortex Speaker. Unlike the regular plasma ark speakers that you have seen in the past. Via: Hackaday “After replacing the power supply and adding an RC snubber across the flyback transformer primary, my plasma speaker is already much louder. The addition of a more powerful PSU, it allowed me to also reduce the number of turns on the primary, which increased the
We have seen lots of corn starch experiments in the past. When mixed with water it is a liquid that can be poured but if you shock it with a hard impact it will turn into a solid. There are lots of fun experiments that can be done with it but the TheBackyardScientist has recorded some great reactions with his high speed camera. The best reaction I think is the one
There are hundreds of these booths that sell souvenirs in Varadero Cuba. They all have the capability of customizing the leather and wood crafts using Wood Burning Engravers. They all look the same, a box that plugs into 220V with a wooden hand held burning tool. There was a guy repairing one and let me snap some pictures. Inside is a modified MOT (microwave oven transformer) with just
We have seen some interesting uses for thermite before but colinfurze has taken thermite fun to the next level with his Thermite Gun build. You can see it in action above and the build process below. This build isn’t for the faint of heart and is probably illegal in your area so duplicate the system at your own risk!
