Low memory available, stability problems may occur.

Projects General Guidance
1

Sketch uses 12,980 bytes (40%) of program storage space. Maximum is 32,256 bytes.
Global variables use 1,620 bytes (79%) of dynamic memory, leaving 428 bytes for local variables. Maximum is 2,048 bytes.
Low memory available, stability problems may occur.

I try to combine two programs (one is music visualizer you can find on Youtube, and the other one is print out the voltage of sound input (double type) from my micro amplifier to Serial Monitor ). Both of these programs work fine by themselves, but when I combine, nothing works. No lights up on LED matrix and no numbers on Serial Monitor. I really don't know what should I do. I seriously need some helps! Any help would be appreciated!!!!!!!

2

http://forum.arduino.cc/index.php?topic=385270.0http://forum.arduino.cc/index.php?topic=385270.0

3

I posted that old post but nobody helped. I am really desperate now. And I just realized I could not delete the old post.

4

you created a new topic but didn't follow aawg's suggestions, namely, posting your code in code tags... Rather than trying to combine two programs haphazardly, perhaps you should take a small amount of code, learn how that works, then move on to more difficult tasks. you cannot expect to copy code from one sketch, paste it into another sketch, and have it work. You'll have to substantially modify the code, that takes learning.