POV Fidget Spinner
Persistence of vision fidget spinner using ATtiny 84a.
The kids asked for a Fidget Spinner when they were doing the rounds and I told them to make their own. They did this with Lego, and then we 3D printed one and used cheap 608 bearings. Any maker who gazes at these things as they slow down can't help but imagine adding some LEDs.
A quick search showed some projects, mainly manufactured PCB kits. We wanted to start from scratch and see where the journey took us.
We used a cheap ATtiny 84a programmed via Arduino IDE and an Uno. It took a few hours to figure out how to do this but eventually we had an ATtiny blinking an LED. https://github.com/mirkin/ATtiny84aSetup
608 Bearing Outside Diameter 22.0mm Bore Diameter 8.0mm Width 7.0mm Inner Ring 10.8mm