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analogReference() [Analog I/O] Description Configures the reference voltage used for analog input (i.e. the value used as the top of the input range). The options ar…

analogRead() [Analog I/O] Description analogRead () function is used to read the value from the specified analog pin. Arduino boards contain a multichannel, 10-bit a…

analogWrite () Function [Analog I/O] Description Writes an analog value (PWM wave) to a pin. Can be used to light a LED at varying brightnesses or drive a motor at…

digitalRead ()   Function [Digital I/O] Description The digitalRead () function is used to read the value from a specified digital pin, either HIGH or LOW . Syntax…

digitalWrite () Function [Digital I/O] Description The digitalWrite () function is used to write a HIGH or a LOW value to a digital pin. If the pin has been configur…

pinMode (): [Digital I/O] Description Configures the specified pin to behave either as an input or an output. See the Digital Pins page for details on the functionality …