steemitboard (66)in #news • 4 years agoRE: Next-generation photodetector cameraCongratulations @popovichartpow! You received a personal award! Birthday! - You are on the Steem blockchain for 2…steemitboard (66)in #news • 5 years agoRE: Next-generation photodetector cameraCongratulations @popovichartpow! You received a personal award! Birthday! - You are on the Steem blockchain for 1…steemitboard (66)in #technology • 6 years agoRE: Bellcycles - compact DIY-bikeCongratulations @popovichartpow! You have completed some achievement on Steemit and have been rewarded with new…