user40853: I am having trouble finding the serial input (or port whatever) on my mega can someone plz show me a pic of this pin thanks

user26916: For information on an Arduino board your first stop should always be the product page, which contains some helpful documentation. For the Mega 2560 the page is https://store.arduino.cc/usa/arduino-mega-2560-rev3. If you had checked there you would see this:

Serial: 0 (RX) and 1 (TX); Serial 1: 19 (RX) and 18 (TX); Serial 2: 17 (RX) and 16 (TX); Serial 3: 15 (RX) and 14 (TX). Used to receive (RX) and transmit (TX) TTL serial data. Pins 0 and 1 are also connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.

You will find those pins on the rightmost header on the top edge of the board in this picture:


40853: <p>I am having trouble finding the serial input (or port whatever) on my mega can someone plz show me a pic of this pin thanks</p>
 26916: <p>For information on an Arduino board your first stop should always be the product page, which contains some helpful documentation. For the Mega 2560 the page is <a href="https://store.arduino.cc/usa/arduino-mega-2560-rev3" rel="nofollow noreferrer">https://store.arduino.cc/usa/arduino-mega-2560-rev3</a>. If you had checked there you would see this:</p>

<blockquote>
  <p>Serial: 0 (RX) and 1 (TX); Serial 1: 19 (RX) and 18 (TX); Serial 2: 17 (RX) and 16 (TX); Serial 3: 15 (RX) and 14 (TX). Used to receive (RX) and transmit (TX) TTL serial data. Pins 0 and 1 are also connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.</p>
</blockquote>

<p>You will find those pins on the rightmost header on the top edge of the board in this picture:
<a href="https://i.stack.imgur.com/Nwb1D.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Nwb1D.jpg" alt="Mega 2560 serial pins"></a></p>
