- some sample code commited

- README added

PoC/7seg.ino

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+// Arduino 7 segment display example software
+// http://www.hacktronics.com/Tutorials/arduino-and-7-segment-led.html
+// License: http://www.opensource.org/licenses/mit-license.php (Go crazy)
+ 
+// Define the LED digit patters, from 0 - 9
+// Note that these patterns are for common cathode displays
+// For common anode displays, change the 1's to 0's and 0's to 1's
+// 1 = LED on, 0 = LED off, in this order:
+//                                    Arduino pin: 2,3,4,5,6,7,8
+
+// Src: http://www.hacktronics.com/Tutorials/arduino-and-7-segment-led.html
+
+byte seven_seg_digits[10][7] = { { 1,1,1,1,1,1,0 },  // = 0
+                                                           { 0,1,1,0,0,0,0 },  // = 1
+                                                           { 1,1,0,1,1,0,1 },  // = 2
+                                                           { 1,1,1,1,0,0,1 },  // = 3
+                                                           { 0,1,1,0,0,1,1 },  // = 4
+                                                           { 1,0,1,1,0,1,1 },  // = 5
+                                                           { 1,0,1,1,1,1,1 },  // = 6
+                                                           { 1,1,1,0,0,0,0 },  // = 7
+                                                           { 1,1,1,1,1,1,1 },  // = 8
+                                                           { 1,1,1,0,0,1,1 }   // = 9
+                                                           };
+
+void setup() {                
+  pinMode(2, OUTPUT);   
+  pinMode(3, OUTPUT);
+  pinMode(4, OUTPUT);
+  pinMode(5, OUTPUT);
+  pinMode(6, OUTPUT);
+  pinMode(7, OUTPUT);
+  pinMode(8, OUTPUT);
+  pinMode(9, OUTPUT);
+  writeDot(0);  // start with the "dot" off
+}
+
+void writeDot(byte dot) {
+  digitalWrite(9, dot);
+}
+    
+void sevenSegWrite(byte digit) {
+  byte pin = 2;
+  for (byte segCount = 0; segCount < 7; ++segCount) {
+    digitalWrite(pin, seven_seg_digits[digit][segCount]);
+    ++pin;
+  }
+}
+
+void loop() {
+  for (byte count = 10; count > 0; --count) {
+   delay(1000);
+   sevenSegWrite(count - 1); 
+  }
+  delay(4000);
+}

PoC/README

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+This is the Proof of Concept code for the 4x5 Windows mock-up.
+With a 4-7Segment Display
+
+It is a static mockup that should be used to make a Video and show off the theory of the project.
+
+The shift Array code is from this Tutorial page:
+
+http://arduino.cc/en/Tutorial/ShiftOut
+
+General information about shift registers: http://en.wikipedia.org/wiki/Shift_register
+
+The one used for driving the 7 segment LED is a standard (SN)74HC595 which is an 8bit Shift register.
+Datasheet: http://www.nxp.com/documents/data_sheet/74HC_HCT595.pdf
+
+The used module is a 16 segment element with one decimal dot (http://www.adafruit.com/datasheets/BL-S80A-13.PDF)
+UHR (Ultra High Red) version
+
+We used a single in-line i(SIL) resistor to make our lives easy. http://en.wikipedia.org/wiki/Resistor

PoC/testcolors_16x32.ino

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+// testcolors demo for RGBmatrixPanel library.
+// Renders 512 colors on a 16x32 RGB LED matrix.
+// Library supports 4096 colors, but there aren't that many pixels!
+
+#include <Adafruit_GFX.h>   // Core graphics library
+#include <RGBmatrixPanel.h> // Hardware-specific library
+
+#define CLK 8  // MUST be on PORTB!
+#define LAT A3
+#define OE  9
+#define A   A0
+#define B   A1
+#define C   A2
+
+RGBmatrixPanel matrix(A, B, C, CLK, LAT, OE, false);
+
+void setup() {
+  matrix.begin();
+  uint8_t r=0, g=0, b=0;
+
+  // Draw top half
+  for (uint8_t x=0; x < 32; x++) {      
+    for (uint8_t y=0; y < 8; y++) {  
+      matrix.drawPixel(x, y, matrix.Color333(r, g, b));
+      r++;
+      if (r == 8) {
+        r = 0;
+        g++;
+        if (g == 8) {
+          g = 0;
+          b++;
+        }
+      }
+    }
+  }
+
+  // Draw bottom half
+  for (uint8_t x=0; x < 32; x++) {      
+    for (uint8_t y=8; y < 16; y++) {  
+      matrix.drawPixel(x, y, matrix.Color333(r, g, b));
+      r++;
+      if (r == 8) {
+        r = 0;
+        g++;
+        if (g == 8) {
+          g = 0;
+          b++;
+        }
+      }
+    }
+  }
+}
+
+void loop() {
+  // do nothing
+}