This is a Badge we created for Celebration 9 in Chicago in April. Its theme is the Storm Trooper Marksmanship Club member badge.
6 Back mounted LED’s Charlie-plexed to an ESP 8266 running simple blink code.
I only have about 10 of these as they are prototypes and will ship out when you order. I will have full production badges at Celebration in April if you are going, Else I will update pictures here after Con.