Emontx shield (no rf) and arduino uno - control RGB matrix?

I am trying to run an emontx shield to output of current values to a sparkfun RBG LED matrix through an arduino UNO (the both from the same arduino)

 

However I can't seem to find any code for the emontx shield that doesn't include (I might be wrong here) sending the information wirelessly.

I just need to use the current values on the arduino itself and use them to light up some led's correspondingly.

I feel like this is probably ridiculously simple, but I just can't find out how to do it anywhere.

Any help...?   Advice on where to looks?