Software apps and online services
This is a smart badge that displays logos, messages, and poems.
First get your fav badge from market and buy OLED display as in pic.
Then open the badge and cut the cover as the size of OLED display and according to the microcontroller, You can use Digispark ATtiny 85 or Arduino Mini if your project want more space.
Now solder and connect all the parts. Then wrap all those components and fix it in the badge as shown in pic. Then open the and upload the code that you want to display on it.
Congrats, now your awesome badge is ready!