To blink an LED with an Arduino using Python, you will need to:
- Connect the LED to the Arduino board. You will need to connect the positive leg of the LED (the longer leg) to a digital output pin and the negative leg (the shorter leg) to a ground pin.
- Install the PySerial library, which allows Python to communicate with the Arduino over a serial connection.
- Use PySerial to send a command to the Arduino to turn the LED on and off. You can do this by opening a serial connection to the Arduino and sending a string with the command you want to execute.
Here’s an example of how to blink an LED connected to digital pin 13 on an Arduino Uno using Python:
import serial import time # Set up the serial connection to the Arduino ser = serial.Serial('/dev/ttyACM0', 9600) # Blink the LED on and off while True: ser.write(b'13H') # Turn the LED on time.sleep(1) # Wait 1 second ser.write(b'13L') # Turn the LED off time.sleep(1) # Wait 1 second # Close the serial connection ser.close()
This code will turn the LED on for 1 second and then off for 1 second, creating a blinking effect. You can adjust the delay between turning the LED on and off by changing the time.sleep()
duration.
How to Install the PySerial library in Arduino in windows:
To install the PySerial library on an Arduino board running Windows, you will need to follow these steps:
- Connect the Arduino board to your computer via a USB cable.
- Open the Arduino Integrated Development Environment (IDE) and go to the “Tools” menu.
- Under the “Tools” menu, select “Manage Libraries…” to open the Library Manager.