Been working on a fidget spinner POV (persistence of vision) project recently. I had a niece and nephew bring one over a few weeks back and it seemed like the platform was just begging for some blinking leds. In this version I’m using the 2 wing style fidget spinner, with a cr2032 battery on each end to provide the balancing weights. The batteries are wired in parallel to provide the power for the AtTiny85 microcontroller along with the 5 leds. I’m planning on using the bootloader for the Adafruit Trinket to program the micro via the micro USB connector.
For the center bearing I’m using an R188, which is about half the size of the more popular 608 bearings that most of the fidget spinners use. The advantage I found with the R188 is that it provides more clearance for tracks to run around it.The other advantage that the R188 provides is that it provides longer spin times.Here’s what the board looks like in its current iteration: