Remember these important points while using the Arduino platform in your future projects:

• When using elementary sensor components, we measure the voltage generated by the sensor module using Arduino's analog pins.
• Always refer to a sensor module datasheet before interfacing it with the Arduino board
• Arduino header libraries are external C code files that can be referenced from an Arduino sketch
• Sometimes a C library must be used for an integrated sensor
• Some integrated sensor modules do not require the use of an Arduino library
• 5-volt compatible devices can be directly powered from Arduino's 5V power pin