Block137

I'm new here My English isn't so good (I'm from Thailand) I've been searching a way to make my EV3 measure voltage which is very easy for NXT but I only have EV3 I've posted on official message board here: https://community.lego.com/t5/MINDSTORMS/DIY-voltage-sensor/m-p/11506213#U11506213 However I'm still not satisfied with the respond He suggested me to post on other forum(s) and here is my first try! I hope I will get something here