Mini e-spinner

This is a design for a fully functional (mini) e-spinner.Not all parts can be 3d printed.Some parts will have to be purchased.Also some electrical wiring needs to be soldered, and the voltage needs to be adjusted.It is not difficult, but some technical insight and experience with a soldering iron is required.I opted for a USB-C connection because it is fairly common. This also gives the possibility to work with a power bank.For this, the step-up converter is necessary to increase the speed of the motor with a higher voltage.The wiring goes from the USB-C connector to the input of the step-up converter.From the output of the step-up convertor to the input of the speed controller.From the output of the speed controller to the 3 position switch (to allow both left and right rotation).And from the switch to the motor.I used 2 smal and light steel springs and a piece of cotton yarn for the brake wire.But a little ruber band wil also work.A nylon wire is not usable as a brake because it crea