simple-pwm-led-audio broken

examples/simple-pwm-led-audio/.gitignore

@@ -0,0 +1 @@
+build-*

examples/simple-pwm-led-audio/Makefile

@@ -0,0 +1,12 @@
+# This will only work if you have installed arduino-mk
+# And set your shell rc with the following env variables:
+#
+#        export ARDUINO_DIR=/usr/share/arduino
+#        export ARDMK_DIR=/usr/share/arduino
+#
+# Adjust to reflect your own paths!
+
+BOARD_TAG	= nano328
+MONITOR_PORT	= /dev/ttyUSB0
+
+include ${ARDMK_DIR}/Arduino.mk

examples/simple-pwm-led-audio/pwm-led-audio.ino

@@ -9,17 +9,22 @@
                   <-- pot 1 -->               <--- ...
 */
 
-#define LED (13)
-#define POT_1 (0)
-#define POT_2 (1)
+#define LED     (13)
+#define POT_1   (0)
+#define POT_2   (1)
+#define POT_3   (2)
+#define SPEAKER (11)
 
-int delay_on;
-int delay_off;
+float delay_on;
+float delay_off;
+float delay_div;
 
 void setup() {                
 	// initialize the digital pin as an output.
 	// Pin 13 has an LED connected on the nano board:
-	pinMode(LED, OUTPUT);     
+	pinMode(LED, OUTPUT);
+        // initialize Pin 11 as audio out
+        pinMode(LED, SPEAKER);
 }
 
 void loop() {
@@ -33,9 +38,18 @@ void loop() {
         delay_on  = 1023 - analogRead(POT_1);
         delay_off = 1023 - analogRead(POT_2);
 
+        // We also read pot 3 value that we will use to control a bit
+        // the delay to reach audible range
+        //delay_div = 1023 - analogRead(POT_3);
+        //
+        // But meergranen 1.0
+        delay_div = analogRead(POT_3);
+
         // Parameters for the PWM
         digitalWrite(LED, HIGH);        // turn the LED on
-        delay(delay_on);                // wait for delay_on ms
+        digitalWrite(SPEAKER, HIGH);        // turn the LED on
+        delay(delay_on/delay_div);                // wait for delay_on ms
         digitalWrite(LED, LOW);         // turn the LED off
-        delay(delay_off);               // wait for delay_off ms
+        digitalWrite(SPEAKER, LOW);         // turn the LED off
+        delay(delay_off/delay_div);               // wait for delay_off ms
 }