When my “hokey spokes” bike lights started to go out (due to age) and I couldnt get “Bike Party” to show up in the programable lettering I started looking into a new wheel mounted bicycle light. I found some unbeleivable wheel lights called “Spoke POV“. It took me many times looking at their website and pictures of the lights to figure out how they work.
Its a “kit” you have to assemble yourself with all the circuits, pcb board and led’s. You buy it in pieces and solder every one into the board. Then the lights can be programmed from your computer thru a USB cable and dongle. There are 4 “banks” that will hold the graphics or lettering or anything you want. You set the “revolution count” to whenever you want it to change to the graphic in the next bank.