Arduino for begginers #2 Arduino uno.

Arduino uno?

The arduino uno is programmable device consists of Atmel ATmega328 microcontroller with operating voltage 5v ,flash memory 32kb of which 0.5kb used by bootloader, sram 2kb and clock speed of 16Mhz.

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An video about the arduino uno explaining about the port configuration and basics.

The above picture consists of series of pin in upward and downward are the input/output pin are classified into 4 types:-

1) 14 Digital pins i/o  0-13(upwards)

These pins can either inputs or outputs. Inputs are used to read the information from sensors while output are used to control the actuators. We have to specify the direction(input/output) in sketch IDE . Digital input can read one of two values and digital outputs can only output one two values(HIGH/LOW)

2)6 analog input pin 0-5(downwards)

The analog input pins are used to reading voltage measurement from analog sensors. analog inputs can measure 1024 different level of voltages, while digital inputs can distinguish b/w only two different levels.

3)6 analog output pin (3,5,6,9,10 and 11)

These pins are also called as PWM and these can act as digital pin and analog output, these should be specified during sketch.

4)power(downwards)

power ports provides 5v output,reset,ground and vin.

The board has powered from the computer usb port or an AC adapter(9v).