diff --git a/analog/analogread.ino b/analog/analogread.ino
new file mode 100644
index 0000000..2d0b212
--- /dev/null
+++ b/analog/analogread.ino
@@ -0,0 +1,220 @@
+#define HWSERIAL Serial1
+
+void setup() {
+  Serial.begin(9600);
+  HWSERIAL.begin(9600);
+}
+const unsigned long sleeptime = 2500;
+unsigned long sleep = 0;
+int aread = 0;
+boolean bounce = 0;
+
+// array to hold analog values for each column
+int col[12];
+
+// array to hold high and low values for each range
+int range[16][2] = {
+  {1009, 1024},
+  {204, 215},
+  {343, 352},
+  {146, 152},
+  {507, 518},
+  {170, 176},
+  {255, 260},
+  {126, 134},
+  {686, 701},
+  {186, 192},
+  {295, 302},
+  {137, 142},
+  {409, 416},
+  {157, 162},
+  {227, 238},
+  {118, 125}
+};
+
+// convert to switch positions
+boolean bin[16][4] = {
+  {0, 0, 0, 0},
+  {1, 0, 0, 0},
+  {0, 1, 0, 0},
+  {1, 1, 0, 0},
+  {0, 0, 1, 0},
+  {1, 0, 1, 0},
+  {0, 1, 1, 0},
+  {1, 1, 1, 0},
+  {0, 0, 0, 1},
+  {1, 0, 0, 1},
+  {0, 1, 0, 1},
+  {1, 1, 0, 1},
+  {0, 0, 1, 1},
+  {1, 0, 1, 1},
+  {0, 1, 1, 1},
+  {1, 1, 1, 1}
+};
+
+// array to hold key positions
+boolean keya[12][4] = {
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0}
+};
+
+boolean keyb[12][4] = {
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0},
+  {0, 0, 0, 0}
+};
+
+void loop()
+{
+  LEDsleep();
+
+  readcolumns();
+  assignkeysA();
+  delay(5);
+  readcolumns();
+  assignkeysB();
+
+  compkeys();
+
+  if (bounce == 0)
+  {
+    LEDupdate();
+    SERIALupdate();
+  }
+}
+
+void readcolumns()
+{
+  byte pass = 0;
+  int comp = 0;
+  for (int x = 0; x < 12; x++)
+  {
+    aread = 0;;
+    comp = 0;
+    pass = 0;
+
+    while (pass < 3)
+    {
+      aread = analogRead(x + 14);
+      if (aread != comp)
+      {
+        pass = 0;
+      }
+      comp = aread;
+      pass++;
+    }
+    col[x] = aread;
+  }
+}
+
+void assignkeysA()
+{
+  for (int c = 0; c < 12; c++)
+  {
+    for (int v = 0; v < 16; v++)
+    {
+      if ((col[c] >= range[v][0]) && (col[c] <= range[v][1]))
+      {
+        for (byte x = 0; x < 4; x++)
+        {
+          keya[c][x] = bin[v][x];
+        }
+      }
+    }
+  }
+}
+
+void assignkeysB()
+{
+  for (int c = 0; c < 12; c++)
+  {
+    for (int v = 0; v < 16; v++)
+    {
+      if ((col[c] >= range[v][0]) && (col[c] <= range[v][1]))
+      {
+        for (byte x = 0; x < 4; x++)
+        {
+          keyb[c][x] = bin[v][x];
+        }
+      }
+    }
+  }
+}
+
+void compkeys()
+{
+  for (int c = 0; c < 12; c++)
+  {
+    for (int v = 0; v < 16; v++)
+    {
+      bounce = 0;
+      for (byte x = 0; x < 4; x++)
+      {
+        if (keya[c][x] != keyb[c][x])
+        {
+          bounce = 1;
+        }
+      }
+    }
+  }
+}
+
+void LEDupdate()
+{
+  for (int c = 0; c < 12; c++)
+  {
+    for (byte r = 0; r < 4; r++)
+    {
+      if (keya[c][r] == 1)
+      {
+        sleep = 0;
+        HWSERIAL.write((r * 16) + c);
+        Serial.println((r * 16) + c);
+      }
+    }
+  }
+}
+
+void SERIALupdate()
+{
+  for (int y = 0; y < 12; y++)
+  {
+    Serial.print(col[y]);
+    Serial.print(", ");
+  }
+  Serial.println();
+}
+
+void LEDsleep()
+{
+  if (sleep < sleeptime)
+  {
+    sleep++;
+  }
+
+  if (sleep == sleeptime)
+  {
+    HWSERIAL.write(random(0, 63));
+    delay(5);
+  }
+}
+