CNL_final_project NTU 2020 spring CNL final project Recording group GUI group Connection group todo feature : maybe group later ppt: https://docs.google.com/presentation/u/1/d/1DN1EngwcW5nkRPB8DHq44tYNwqGAk1ka6fEc3PrRmHQ/edit?fbclid=IwAR2u74Ao--6BOMnC0owzy6qRjPoh-7PSuLB9g7-fLFNv6MVz4-XHhNeHMT8#slide=id.g878f9b651e_0_201