So I have been trying to figure out a way to print to two 8x8 LED matrices using a MAX7219 without scrolling text. All the tutorials I could find have it set up for scrolling text and I cant figure out a way for the display to be static. This will be used to as a speedometer getting the speed from a GPS. All I need is for it to display one or two numbers with two columns in between them. Can someone point me in the right direction? Thanks in advance.
Look at the MD_M7xx library in the links below. The library has examples of how to display letters and numbers. You don' have to scroll at all.
You will need to answer yourself questions as to whether the text digits will be centered or right justified, leading zero, etc. this will affect how you place the text in the matrix.
nater1217:
All I need is for it to display one or two numbers with two columns in between them.
Dumb question possibly, but why even bother with 8x8 LED matrices if you want to display a one or two digit number, unless your requirement is to use matrices because that would be "like totally rad, dude"? Displaying a number like you indicate is an application for a 7-segment display. If you want to do graphics, scrolling, alpha characters, characters in other languages, etc. then matrices become relevant. MAX7219s are wonderful for 7 segment displays also (common cathode variety only).
And I should mention I have added devices to projects before simply because they would be totally rad, so if that is what you want, go ahead.