The post titled: "My son asked to borrow some duct tape...this is what he gave me back," quickly gained attention, gathering ...

But a simple pinwheel, custom cut from patterns scaled down from a toy, proved to be just the thing. A reflective optosensor counts revolutions as the turbine spins in an HVAC duct, and with a ...

My custom-built, easily transportable parabolic ... module using nothing but 3D printed parts, a bit of epoxy, and duct tape. The design of a parabolic WiFi antenna isn’t that much different ...