The IDE prints out the amount of program space used by my sketch but I was wondering if there is a way to determine how much RAm I have left (other than the obvious way of allocating a silly sized array) ??
Having played about with BasicStamps before - I found the resource map their IDE provides very useful.
TIA
Softfoot:
The IDE prints out the amount of program space used by my sketch but I was wondering if there is a way to determine how much RAm I have left (other than the obvious way of allocating a silly sized array) ??
Use IDE V1.5, and it will tell you how much RAM is used for global variables after compile.
Thnaks for the tip 
Sadly my project uses the SD library which worked under 1.0.5 but now wont compile under 1.5.0 giving the error :
Arduino: 1.5.6-r2 (Windows XP), Board: "Arduino Uno"
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp: In function 'void spiSend(uint8_t)':
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp:35: error: 'SPI' was not declared in this scope
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp: In function 'uint8_t spiRec()':
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp:44: error: 'SPI' was not declared in this scope
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp: In member function 'uint8_t Sd2Card::init(uint8_t, uint8_t)':
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp:251: error: 'SPI' was not declared in this scope
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp: In member function 'uint8_t Sd2Card::setSckRate(uint8_t)':
C:\Program Files\Arduino\libraries\SD\src\utility\Sd2Card.cpp:507: error: 'SPI' was not declared in this scope
The fix seems to be to inlcude "SPI.h" before "SD.h"
... is that correct ??