1 files changed, 0 insertions, 146 deletions
diff --git a/docs/tutorial/servo.rst b/docs/tutorial/servo.rst
deleted file mode 100644
index 83d1b0cc15..0000000000
--- a/docs/tutorial/servo.rst
+++ /dev/null
@@ -1,146 +0,0 @@
-Controlling hobby servo motors
-==============================
-
-There are 4 dedicated connection points on the pyboard for connecting up
-hobby servo motors (see eg
-[Wikipedia](http://en.wikipedia.org/wiki/Servo_%28radio_control%29)).
-These motors have 3 wires: ground, power and signal.  On the pyboard you
-can connect them in the bottom right corner, with the signal pin on the
-far right.  Pins X1, X2, X3 and X4 are the 4 dedicated servo signal pins.
-
-.. image:: img/pyboard_servo.jpg
-
-In this picture there are male-male double adaptors to connect the servos
-to the header pins on the pyboard.
-
-The ground wire on a servo is usually the darkest coloured one, either
-black or dark brown.  The power wire will most likely be red.
-
-The power pin for the servos (labelled VIN) is connected directly to the
-input power source of the pyboard.  When powered via USB, VIN is powered
-through a diode by the 5V USB power line.  Connect to USB, the pyboard can
-power at least 4 small to medium sized servo motors.
-
-If using a battery to power the pyboard and run servo motors, make sure it
-is not greater than 6V, since this is the maximum voltage most servo motors
-can take.  (Some motors take only up to 4.8V, so check what type you are
-using.)
-
-Creating a Servo object
------------------------
-
-Plug in a servo to position 1 (the one with pin X1) and create a servo object
-using::
-
-    >>> servo1 = pyb.Servo(1)
-
-To change the angle of the servo use the ``angle`` method::
-
-    >>> servo1.angle(45)
-    >>> servo1.angle(-60)
-
-The angle here is measured in degrees, and ranges from about -90 to +90,
-depending on the motor.  Calling ``angle`` without parameters will return
-the current angle::
-
-    >>> servo1.angle()
-    -60
-
-Note that for some angles, the returned angle is not exactly the same as
-the angle you set, due to rounding errors in setting the pulse width.
-
-You can pass a second parameter to the ``angle`` method, which specifies how
-long to take (in milliseconds) to reach the desired angle.  For example, to
-take 1 second (1000 milliseconds) to go from the current position to 50 degrees,
-use ::
-
-     >>> servo1.angle(50, 1000)
-
-This command will return straight away and the servo will continue to move
-to the desired angle, and stop when it gets there.  You can use this feature
-as a speed control, or to synchronise 2 or more servo motors.  If we have
-another servo motor (``servo2 = pyb.Servo(2)``) then we can do ::
-
-    >>> servo1.angle(-45, 2000); servo2.angle(60, 2000)
-
-This will move the servos together, making them both take 2 seconds to
-reach their final angles.
-
-Note: the semicolon between the 2 expressions above is used so that they
-are executed one after the other when you press enter at the REPL prompt.
-In a script you don't need to do this, you can just write them one line
-after the other.
-
-Continuous rotation servos
---------------------------
-
-So far we have been using standard servos that move to a specific angle
-and stay at that angle.  These servo motors are useful to create joints
-of a robot, or things like pan-tilt mechanisms.  Internally, the motor
-has a variable resistor (potentiometer) which measures the current angle
-and applies power to the motor proportional to how far it is from the
-desired angle.  The desired angle is set by the width of a high-pulse on
-the servo signal wire.  A pulse width of 1500 microsecond corresponds
-to the centre position (0 degrees).  The pulses are sent at 50 Hz, ie
-50 pulses per second.
-
-You can also get **continuous rotation** servo motors which turn
-continuously clockwise or counterclockwise.  The direction and speed of
-rotation is set by the pulse width on the signal wire.  A pulse width
-of 1500 microseconds corresponds to a stopped motor.  A pulse width
-smaller or larger than this means rotate one way or the other, at a
-given speed.
-
-On the pyboard, the servo object for a continuous rotation motor is
-the same as before.  In fact, using ``angle`` you can set the speed.  But
-to make it easier to understand what is intended, there is another method
-called ``speed`` which sets the speed::
-
-    >>> servo1.speed(30)
-
-``speed`` has the same functionality as ``angle``: you can get the speed,
-set it, and set it with a time to reach the final speed. ::
-
-    >>> servo1.speed()
-    30
-    >>> servo1.speed(-20)
-    >>> servo1.speed(0, 2000)
-
-The final command above will set the motor to stop, but take 2 seconds
-to do it.  This is essentially a control over the acceleration of the
-continuous servo.
-
-A servo speed of 100 (or -100) is considered maximum speed, but actually
-you can go a bit faster than that, depending on the particular motor.
-
-The only difference between the ``angle`` and ``speed`` methods (apart from
-the name) is the way the input numbers (angle or speed) are converted to
-a pulse width.
-
-Calibration
------------
-
-The conversion from angle or speed to pulse width is done by the servo
-object using its calibration values.  To get the current calibration,
-use ::
-
-    >>> servo1.calibration()
-    (640, 2420, 1500, 2470, 2200)
-
-There are 5 numbers here, which have meaning:
-
-1. Minimum pulse width; the smallest pulse width that the servo accepts.
-2. Maximum pulse width; the largest pulse width that the servo accepts.
-3. Centre pulse width; the pulse width that puts the servo at 0 degrees
-   or 0 speed.
-4. The pulse width corresponding to 90 degrees.  This sets the conversion
-   in the method ``angle`` of angle to pulse width.
-5. The pulse width corresponding to a speed of 100.  This sets the conversion
-   in the method ``speed`` of speed to pulse width.
-
-You can recalibrate the servo (change its default values) by using::
-
-    >>> servo1.calibration(700, 2400, 1510, 2500, 2000)
-
-Of course, you would change the above values to suit your particular
-servo motor.