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diff --git a/docs/source/arduino/pulsein.rst b/docs/source/arduino/pulsein.rst
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-.. _arduino-pulsein:
-
-pulseIn()
-=========
-
-Description
------------
-
-Reads a pulse (either HIGH or LOW) on a pin. For example, if
-**value** is **HIGH**, **pulseIn()** waits for the pin to go
-**HIGH**, starts timing, then waits for the pin to go **LOW** and
-stops timing. Returns the length of the pulse in microseconds.
-Gives up and returns 0 if no pulse starts within a specified time
-out.
-
-
-
-The timing of this function has been determined empirically and
-will probably show errors in longer pulses. Works on pulses from 10
-microseconds to 3 minutes in length.
-
-
-
-Syntax
-------
-
-pulseIn(pin, value)
-pulseIn(pin, value, timeout)
-
-
-
-Parameters
-----------
-
-pin: the number of the pin on which you want to read the pulse.
-(*int*)
-
-
-
-value: type of pulse to read: either
-`HIGH <http://arduino.cc/en/Reference/Constants>`_ or
-`LOW <http://arduino.cc/en/Reference/Constants>`_. (*int*)
-
-
-
-timeout (optional): the number of microseconds to wait for the
-pulse to start; default is one second (*unsigned long*)
-
-
-
-Returns
--------
-
-the length of the pulse (in microseconds) or 0 if no pulse started
-before the timeout (*unsigned long*)
-
-
-
-Example
--------
-
-::
-
-     
-    
-    int pin = 7;
-    unsigned long duration;
-    
-    void setup()
-    {
-      pinMode(pin, INPUT);
-    }
-    
-    void loop()
-    {
-      duration = pulseIn(pin, HIGH);
-    }
-
-