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user: klangdon created: 2013-05-06 karma: 9 I build stuff, usually virtual stuff. More details at https://kevinlangdon.com submissions: 0 points | 0 comments Show HN: Ball 2 – Use AI to build fun ball games 2 points | 3 comments President Zelenskyy addresses tech community via AR 3 points | 0 comments 0 points | 0 comments 0 points | 0 comments Show HN: Scaring my friends with infrared night vision 4 points | 0 comments 0 points | 0 comments 0 points | 0 comments Using iPhone 12 Lidar and infrared to see in a cave [video] 3 points | 0 comments 0 points | 0 comments Show HN: Sortzy States, Using sorting for meaningful learning 3 points | 1 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments