text: Sometimes).
  In this tutorial, we will connect an Arduino to a Raspberry Pi and have the Arduino send “Hello from Arduino” to the Raspberry Pi, and the Raspberry Pi will blink an LED upon receiving the command from the Arduino.
  For communication, we will use simple serial communication over USB cable.
  So, let’s get started!
  Connect the LED to pin number 11 as shown in the picture below.
  Turn on the Raspberry Pi and open Python 3 in a new window.
  Write the following code in the new window and save it. (Save to your desktop so you don't lose it.)
  import serial import RPi.GPIO as GPIO import time ser=serial.Serial("/dev/ttyACM0"); }
  Make sure the code is uploaded to Arduino.
  In your Raspberry Pi interface, be sure to enable Serial and I2C in PiConfig. you got ACM0, the line should look like this: ser=serial.Serial(“dev/ttyACM0”,9600)
  Now run the program you just created in Python3. You will see “Hello From Arduino!” in the Python terminal, and your LED should be blinking as well!