Project20.Joystick
===================

Description
------------
Lots of robot projects need joystick.   This module provides an affordable solution.
By simply connecting to two analog inputs, the robot is at your commands with X,
Y control.


Specification
--------------
- Supply Voltage: 3.3V to 5V
- Interface: Analog x2, Digital x1
- Size: 40*28mm
- Weight: 12g

Connect
--------
.. image:: /img/connect/20_bb.png

Code
-----
.. code-block:: c

    int value = 0;

    void setup() {
    pinMode(3, OUTPUT);
    Serial.begin(9600);
    }

    void loop() {
    value = analogRead(0);
    Serial.print("X:");
    Serial.print(value, DEC);

    value = analogRead(1);
    Serial.print(" | Y:");
    Serial.println(value, DEC);

    delay(100);
    }

Phenomenon
-----------

.. image:: /img/phenomenon/20.jpg