1 files changed, 28 insertions, 0 deletions
diff --git a/Arduino/ButtonMatrix/ButtonMatrix.pde b/Arduino/ButtonMatrix/ButtonMatrix.pde
index 6ce18f4..1ed494c 100755
--- a/Arduino/ButtonMatrix/ButtonMatrix.pde
+++ b/Arduino/ButtonMatrix/ButtonMatrix.pde
@@ -3,6 +3,14 @@
 const byte ROWS = 19;
 const byte COLS = 8;
 
+
+// these constants describe the pins for the acellarometer . They won't change:
+const int groundpin = 18;             // analog input pin 4 -- ground
+const int powerpin = 19;              // analog input pin 5 -- voltage
+const int xpin = A3;                  // x-axis of the accelerometer
+const int ypin = A2;                  // y-axis
+const int zpin = A1;                  // z-axis (only on 3-axis models)
+
 /* Each of the buttons can be refered to by a number 
    At the moment the byte overflow for the 127+ numbers is dealt with at the 
    getKey time, but if a unsigned byte could be used here it would remove the need
@@ -33,6 +41,14 @@ void setup(){
   Serial.begin(115200);
   Serial.println("Go");
 
+  // Provide ground and power by using the analog inputs as normal
+  // digital pins.  This makes it possible to directly connect the
+  // breakout board to the Arduino.  If you use the normal 5V and
+  // GND pins on the Arduino, you can remove these lines.
+  pinMode(groundpin, OUTPUT);
+  pinMode(powerpin, OUTPUT);
+  digitalWrite(groundpin, LOW);
+  digitalWrite(powerpin, HIGH);
 }
 /* Send numbers back and forth to test the integrity of the serial communication 
    Computer sends the first byte
@@ -58,4 +74,16 @@ void loop(){
   if (customKey != NO_KEY){
     Serial.println(customKeyInt);
   }
+  
+  // print the sensor values:
+  Serial.print(analogRead(xpin));
+  // print a tab between values:
+  Serial.print("\t");
+  Serial.print(analogRead(ypin));
+  // print a tab between values:
+  Serial.print("\t");
+  Serial.print(analogRead(zpin));
+  Serial.println();
+  // delay before next reading:
+  delay(100);
 }