Arduino IDE display DEBUG PORT Serial1 output How can I display / capture Arduino IDE's Serial1 output?
Can I display it using Arduino IDE or using a script in Python?

This python script (courtesy of Chad G) works for the Serial:

#!/usr/bin/env python3


import serial 
import sys

if len(sys.argv)&lt;2:
    print("Please give serial port number")
    exit()
port=sys.argv[1]
ser= serial.Serial('/dev/ttyUSB'+port,9600,timeout=5)

while True:
    try:
    stringMe = str(ser.readline().strip())
    if len(stringMe)&gt;3:
        print(stringMe)

    except:
    print(sys.exc_info())
    ser.close()
    exit()


called as (for USB0): 

python3 Arduino/tools/multiMonitor/monitorUsb1.py 0


or, if I want to save to a log file:

python3 Arduino/tools/multiMonitor/monitorUsb1.py 0 &gt;&gt; Arduino/tools/multiMonitor/log/usb00.txt
Serial1 (on most Arduino boards that have Serial1) is connected to a pair of pins on the GPIO headers and nowhere else.

To get it to your computer you will have to feed those TX and RX pins through a USB to TTL UART (FT232, CP2102, etc) adaptor.

From there on in it's exactly the same as using Serial but of course with a different device name.