--- a/service/busyboxArduino/main.ino	Mon Jan 19 18:02:27 2015 -0800
+++ b/service/busyboxArduino/main.ino	Mon Jan 19 18:02:47 2015 -0800
@@ -1,8 +1,11 @@
 #include <Arduino.h>
 #include <LiquidCrystal.h>
+#include "DFR_Key.h"
+#include "IRremote.h"
 
+// see http://www.dfrobot.com/image/data/DFR0009/LCDKeypad%20Shield%20V1.0%20SCH.pdf
 #define I2C_ADDR      0x27 // I2C address of PCF8574A
-#define BACKLIGHT_PIN 3
+#define BACKLIGHT_PIN 10
 #define En_pin        9
 #define Rw_pin        1
 #define Rs_pin        8
@@ -11,41 +14,175 @@
 #define D6_pin        6
 #define D7_pin        7
 
-LiquidCrystal twilcd(Rs_pin, Rw_pin, En_pin, D4_pin, D5_pin, D6_pin, D7_pin, BACKLIGHT_PIN, POSITIVE);
+LiquidCrystal lcd(Rs_pin, Rw_pin, En_pin, D4_pin, D5_pin, D6_pin, D7_pin, BACKLIGHT_PIN, POSITIVE);
+DFR_Key keypad;
 
 #define debugLed 13
 
+byte backlightStandard = 0;
+byte backlightCurrent = 0;
+byte backlightKeypressBoost = 30;
+
+int lastKey = -1;
+int lastUnsentKeydown = -1;
+uint16_t steps = 0;
+uint16_t stepDelayPerBrightnessFade = 2048;
+
+IRsend irsend;
+
+void sendnec(byte addr, byte cmd) {
+  uint32_t w = 0x00ff0000;
+  w |= (cmd << 8) & 0xff00;
+  w |= (~cmd) & 0xff;
+  irsend.sendNEC(w, 32);
+ delay(100);
+}
 
 void setup(void) {
-  int i;
   pinMode(debugLed, OUTPUT);
-
   Serial.begin(115200);
-  
-  twilcd.begin(16,2);
-  twilcd.setBacklight(HIGH);
-  twilcd.home();
-  //1234567890123456
-  //I2C/TWI BackPack
-  twilcd.print("hello world");
-  // ana read and display
-  while (1) {
-    while (Serial.available() <= 2) {
-    }
-    i = Serial.read();
-    if (i != 0x60) {
-      continue;
-    }
-    i = Serial.read(); // command
-    if (i == 0) { // set strip: 0x60 0x00 <numPixels * 3 bytes>
-      digitalWrite(debugLed, 1);
-      delay(1000);
-      digitalWrite(debugLed, 0);
-    } else {
-        // unknown command
-    }
+  keypad.setRate(10);
+  lcd.begin(16,2);
+
+
+  for (int i = 0; i < 1; i++) {
+    digitalWrite(debugLed,1);
+    /*
+44 key remote. command chart: http://blog.allgaiershops.com/2012/05/
+Up  Down Play Pwr
+0x3A 0xBA 0x82 0x02
+
+Red  Grn  Blu  Wht
+1A   9A   A2   22
+
+2A   AA   92   12
+
+0A   8A   B2   32
+
+38   B8   78   F8
+
+18   98   58   D8
+
+RUp  GUp  BUp  Quick
+28   A8   68   E8
+
+RDn  GDn  BDn  Slow
+08   88   48   C8
+
+DIY1 DIY2 DIY3 AUTO
+30   B0   70   F0
+
+DIY4 DIY5 DIY6 Flash
+10   90   50   D0
+
+JMP3 JMP7 Fade Fade7
+20   A0   60   E0
+      
+    irsend.sendNEC(0xff0002fd, 32);
+    irsend.sendNEC(0x00ff02fd, 32);
+    irsend.sendNEC(0x00ff40bf, 32);
+    irsend.sendNEC(0xff0040bf, 32);
+    */
+    delay(100);
+
+    // LED618 remote command byte (addr is ff)
+    // see https://github.com/alistairallan/RgbIrLed/blob/master/RgbIrLed.cpp#L44
+#define ON                0xE0
+#define OFF               0x60
+#define BRIGHTNESS_UP     0xA0
+#define BRIGHTNESS_DOWN   0x20
+#define FLASH             0xF0
+#define STROBE            0xE8
+#define FADE              0xD8
+#define SMOOTH            0xC8
+ 
+#define RED               0x90
+#define GREEN             0x10
+#define BLUE              0x50
+#define WHITE             0xD0
+ 
+#define ORANGE            0xB0
+#define YELLOW_DARK       0xA8
+#define YELLOW_MEDIUM     0x98
+#define YELLOW_LIGHT      0x88
+ 
+#define GREEN_LIGHT       0x30
+#define GREEN_BLUE1       0x28
+#define GREEN_BLUE2       0x18
+#define GREEN_BLUE3       0x08
+ 
+#define BLUE_RED          0x70
+#define PURPLE_DARK       0x68
+#define PURPLE_LIGHT      0x58
+#define PINK              0x48
+    sendnec(0xff, ON);
+    
+    digitalWrite(debugLed,0);
+    delay(100);
   }
 }
 
+
 void loop() {
+  while (Serial.available() <= 2) {
+    int localKey = keypad.getKey();
+    if (localKey != SAMPLE_WAIT) {
+      if (localKey != lastKey) {
+        if (lastKey == 0) {
+          backlightCurrent = min(255, backlightStandard +
+                                 backlightKeypressBoost);
+          lastUnsentKeydown = localKey;
+        }
+        lastKey = localKey;
+      }
+    }
+
+    if (backlightCurrent > backlightStandard) {
+      steps++;
+      if (steps % stepDelayPerBrightnessFade == 0) {
+        backlightCurrent--;
+      }
+    } else if (backlightCurrent < backlightStandard) {
+      backlightCurrent = backlightStandard;
+    }
+    lcd.setBacklight(backlightCurrent);
+  }
+  byte i = Serial.read();
+  if (i != 0x60) {
+    return;
+  }
+  i = Serial.read(); // command
+  if (i == 0) { // get status
+    Serial.print('{');
+    if (lastUnsentKeydown != -1) {
+      Serial.print("\"keyDown\":");
+      Serial.print(lastUnsentKeydown);
+      Serial.print(",");
+      lastUnsentKeydown = -1;
+    }
+    Serial.print("\"slider1\":"); Serial.print(analogRead(1));
+    Serial.print(",\"slider2\":"); Serial.print(analogRead(2));
+    Serial.print(",\"slider3\":"); Serial.print(analogRead(3));
+    Serial.print(",\"slider4\":"); Serial.print(analogRead(4));
+    Serial.print("}\n");
+  } else if (i == 1) { // write text
+    while (Serial.available() < 3) NULL;
+    byte row = Serial.read();
+    byte col = Serial.read();
+    byte nchars = Serial.read();
+    char buf[32];
+    char *p=buf;
+    while (nchars--) {
+      while (Serial.available() < 1) NULL;
+      *(p++) = Serial.read();
+    }
+    *p = 0;
+    lcd.setCursor(row, col);
+    lcd.print(buf);
+  } else if (i == 2) { // set backlight
+    while (Serial.available() < 1) NULL;
+    backlightStandard = Serial.read();
+  } else {
+    // unknown command
+  }
 }