help with serial.read

Projects Networking, Protocols, and Devices
24

i tried this if (stringOne.substring(1,5) == "R") to capture Rxxxx but i got, stringOne was not declared in this scope

You should really read with the intention to learn, instead of reading to try to prouve me wrong. :wink:

Look at this once more and think about it

if (stringOne.substring(1,5) == "R")

also,

stringOne was not declared in this scope

Did you declare a String name stringOne in your code?