Rock paper scissors robot with an advertised 100% winning rate (although technically it cheats!). 57-second video:
https://www.youtube.com/watch?v=ZVNnoOcohaU
Previously:
https://www.homemadetools.net/forum/...438#post107444
https://www.homemadetools.net/forum/...080#post103191
https://www.homemadetools.net/forum/...841#post100173
https://www.homemadetools.net/forum/...2565#post76591
