Magnetic Pulser for accelerating tops and fidget spinners
EMPulser.zip is a zipped file of the Extended Gerber files (RS-274X) necessary to have the board fabricated at the board house of your choice.
Pulser.png is a photograph of the assembled device.
YaleTop.stl is an stl file for the top that can be printed using most 3D printers.
EMPulser.fzz is a fritzing file that has the circuit and board layout from which the Gerber files were created.
Following is a link to a Youtube video showing the assembly of the EM pulser, 3D printed top and its operation. https://youtu.be/3384bPZFSDQ