QR codes! You learned how to make them and use them! The badge itself is a QR code too! Adafruit offers a fun and exciting "badges" of achievement for electronics, science and engineering. We believe everyone should be able to be rewarded for learning a useful skill, a badge is just one of the many ways to show and share.This is the "I learned how to make QR codes" and did something interesting and cool with them for use with educators, classrooms, workshops, Maker Faires,...