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diff --git a/libraries/Esplora/Beginners/EsploraSoundSensor/EsploraSoundSensor.ino b/libraries/Esplora/Beginners/EsploraSoundSensor/EsploraSoundSensor.ino
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index 0000000..3bf454f
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+++ b/libraries/Esplora/Beginners/EsploraSoundSensor/EsploraSoundSensor.ino
@@ -0,0 +1,41 @@
+/*
+  Esplora Sound Sensor
+ 
+ This  sketch shows you how to read  the microphone sensor. The microphone
+will range from 0 (total silence) to 1023 (really loud).  
+ When you're using the sensor's reading (for example, to set the brightness
+ of the LED), you map the sensor's reading to a range between the minimum
+ and the maximum.
+ 
+ Created on 22 Dec 2012
+ by Tom Igoe
+ 
+ This example is in the public domain.
+ */
+
+#include <Esplora.h>
+
+void setup() {
+  // initialize the serial communication:
+  Serial.begin(9600);
+}
+
+void loop() {
+  // read the sensor into a variable:
+  int loudness = Esplora.readMicrophone();
+
+  // map the sound level to a brightness level for the LED:
+  int brightness = map(loudness, 0, 1023, 0, 255);
+  // write the brightness to the green LED: 
+  Esplora.writeGreen(brightness);
+  
+  
+    // print the microphone levels and the LED levels (to see what's going on):
+    Serial.print("sound level: ");
+    Serial.print(loudness);
+    Serial.print(" Green brightness: ");
+    Serial.println(brightness);
+  // add a delay to keep the LED from flickering:
+  delay(10); 
+}
+