SPI.h needed to run on Arduino UNO

[JDWong]

Arduino UNO Owners:
Add "#include <SPI.h>" (without quotes) to prevent build errors.

-Jim

[TrexSpace]

JDWong is correct. To get the code to compile on my Uno, I had to add:

#include <SPI.h>

[edffz]

I uploaded this to create.cc editor and upon compiling I get ERROR: "RTC not declared in this scope"???
Help
ed

[dfaMA18]

To address the RTC compilation error message when using this code with an Arduino Uno, I changed two lines:
Changed !RTC.begin . . .to !rtc.begin . . .
Changed now = RTC.now(); to now = rtc.now();
The sketch then compiled successfully.