Arduino tutorial

See Also:
• pinMode()
• analogRead()
• if()
• serial.begin()
• serial.print()
• AnalogInput - Use a potentiometer to control the blinking of an LED.
• AnalogInOutSerial - read an analog input, map its values, and then use that
information to dim or brighten an LED.
• Memsic2125 - read a two axis accelerometer.
• ADXL3xx - read a ADXL3xx accelerometer.
• Ping - detect objects with an ultrasonic range finder.