In arduino we can see many type of pins.
White words will show name of the pin.
3.3V -
By using this pin you can get 3.3v out from the arduino. (To power some external component)
5V -
By using this pin you can get 5v out from the arduino. (To power some external component)
GND -
By using this pin you can get GND out from the arduino. (To power some external component)
A0-5 -
By using this pin you can put an analog iput to the arduino.
0--Rx -
Use to receive transmitting data from another component.
1-Tx
Use transmit data to another component
2-13
are digital pins.
But you can see ~ mark is in front of some numbers.
That means that pin is support to PWM feature. (We will discuss about it later.)
ON led -
When board receives power that light must go on.
Tx and Rx Led
This led must light up when board is communicating.
DC power port
available to connect external power source to board. (You can power the board even without USB power supply.)
Reset switch - Use restart the program.
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