“POV Fidget spinner which uses Enhanced PIC16 AngularTimer peripheral, Bluetooth Low Energy 4.2 link, LabVIEW PC application, touch button…
This is a fidget spinner which uses Persistence of Vision effect which is an optical illusion whereby multiple discrete images blend into a single image in the human mind.
The text or graphics can be changed via Bluetooth Low Energy link by using a PC application that I have programmed in LabVIEW or by using a freely available smartphone BLE app.
One of the most important characteristics is that the displayed graphics doesnt depend on rotation velocity thanks to its innovative solution for keeping the track of rotation angle. Meaning that the displayed graphic is perceived the same at both, higher and lower rotational speeds (for instance, when the fidget spinner is slowing down when held in the hand).
This is also one of the main difference between various POV device on the market (POV clocks, etc.) which must have a constant rotational speed in order for the image to be displayed correctly.”