Extension builder sample for reading analog data


Hi im new comer for mbot and arduino,

im trying to create a mblock extension to read a analog sensor, and return value after some calculation as a simple project.

i have read the sample of creating “LED Extension”, it is very useful to get basic information that i need. but when i try to create the extension to read the data, i m quite confusing with following:

  1. seem i need to select a “number” as “block type”, but i m confusing how the the value return from my code can relate to the “number” represent by the block. do i need to set a variable to relate the return mess to the “block” or any name in the basic information is used for these aim???

  2. any simple sample for connecting arduino sensor can be provide???