variable smaller than a byte?

Hi,

I have some large arrays that contain image data for an LED matrix display.

Right now I have 3D array of unsigned ints. But I don't actually need 256 * 3 values for each pixel since the display doesn't have anywhere near that colour depth.

Can I store an array of values between 0 and 7 and save space?

THanks

Yes.

This will give you some ideas...
https://www.google.com/search?q=site%3Aforum.arduino.cc+bit+array