[Colton Baldridge] has created the OS3M Mouse — an open source alternative using PCB coils and 3D printed flexures. The primary challenges in creating a 6DOF input device, similar to the ...

So when [Daniel Eindhoven] sent his no-wind Tesla coil into the tip line, it immediately got our attention. The genius in his design is that the coils are actually etched into the PCB, completely ...

A coil with an iron core is called an electromagnet. The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core ...