bdesigner教學
https://bdesigner1.webnode.tw/micro-bit/
http://www.slps.tn.edu.tw/modules/tad_book3/index.php?op=list_docs&tbsn=12
https://sites.google.com/site/wenyumaker2/02micro-bit-yan-jiu/10-led-deng-de-shi-yong