High-Pressure Foam Rocket
Calling a rocket that sprints over 100 feet into the air a โtoyโ might be a bit of a stretch. Toy or not, this rocket really packs a punch.
Packing tape
Secret Garage Door Remote
Create this very sneaky hidden remote that activates your garage door when you lift a soda cup in your car.
Solar TV Remote
Powering a TV remote with the sun means you wonโt have to buy batteries every six months to surf from your sofa. Low-voltage devices that use power only occasionally, like remotes, are good candidates for a solar-powered trickle-charge. Hereโs how we modded our remote to live off of the sun, using rechargeable batteries connected in parallel with a small solar cell and a diode to keep any power from trickling back out.
Carbon Fiber Primer
It seems as though nearly everything โhigh performanceโ these days boasts some amount of carbon fiber in its construction. Originally used in aerospace, carbon fiber has moved into the mainstream and can be found in luxury automobiles, mountain bikes, and sports equipment. Some laptops and cellphones even use printed decals to simulate this lightweight materialโs […]
Chladni Plate
Use a broken speaker, bits of wire, and tape to prepare a coneless voice coil driver, then use it to generate standing waves on a sheet of metal, making sound visible. Magic! My knowledgeable friend Robin once said that you donโt need to worry about having too big an audio amplifier, because speakers are usually […]
