SMS-Based LED Matrix Display.

Using Arduino Project Guidance
3

for the LED-Matrix Driver, here are the pins i'm using and their pinModes.

const char CLK = 5; 
const char DAT = 6; 
const char STR = 7; 
const char K0 = A0; 
const char K1 = A1; 
const char K2 = A2; 
const char K3 = A3; 
const char K4 = 8; 
const char K5 = 9; 
const char K6 = 10; 
const char K7 = 11; 

void setup() {                
  pinMode(CLK, OUTPUT);     
  pinMode(DAT, OUTPUT);     
  pinMode(STR, OUTPUT);     
  pinMode(K0, OUTPUT);     
  pinMode(K1, OUTPUT);     
  pinMode(K2, OUTPUT);     
  pinMode(K3, OUTPUT);     
  pinMode(K4, OUTPUT);     
  pinMode(K5, OUTPUT);     
  pinMode(K6, OUTPUT);     
  pinMode(K7, OUTPUT);  

  digitalWrite(K0,HIGH);  
  digitalWrite(K1,HIGH);  
  digitalWrite(K2,HIGH);  
  digitalWrite(K3,HIGH);  
  digitalWrite(K4,HIGH);  
  digitalWrite(K5,HIGH);  
  digitalWrite(K6,HIGH);  
  digitalWrite(K7,HIGH);

as for the GSM, i'm not really sure. I used pins 2 and 3 to define TX, RX. does the GSM Shield other pins as well?

thanks!

  • Migs