Fidget spinner - bare PCB (170184-1)

The heart of this device is an ATmega328PB controller which you can program to make it display your messages. Seven different modes are possible, including a revolution counter and a battery level gauge. Through in-circuit ISP programming, you can set your text; a 1 KB EEPROM gives you lots of space to store it. It works on two button cells. A 3D printed enclosure completes this project.