Simple Traffic Lights using Python and Arduino
I am using The Most Complete Starter Kit UN0 R3 Project which is produced by Elegoo and contains and Arduino
Create your circuit

I have attached red to digital pin 9 on the Arduino, yellow to digital pin 10 and green to digital pin 11.

Create a circuit containing a 10Kohm resistor and 3 leds.
Download the Arduino IDE
Download the Arduino IDE from https://www.arduino.cc/en/Main/Software
Upload Firmata onto the Arduino
- Open the Arduino IDE
- Select File -> Examples -> Firmata -> StandardFirmata
- Click the Green arrow to upload the code

Install Firmata1 Python Module
- Open PyCharm
- Open terminal inside PyCharm
pip3 install pyfirmata
- Pycharm -> Preferences -> Project: nnn -> Project Interpreter
- click +
- search for Pyfirmata1
- click Install Package

Write the Code
from time import sleep from pyfirmata2 import Arduino board = Arduino(Arduino.AUTODETECT) red = board.digital[9] yellow = board.digital[10] green = board.digital[11] leds = red, yellow, green def off(): [led.write(0) for led in leds] def on(*colors, time=0): off() [color.write(1) for color in colors] sleep(time) on(red, time=3) on(red, yellow, time=1.5) on(green, time=3) on(yellow, time=1.5) on(red, time=3) off() board.exit()
Run your code
Tag:arduino, circuit, electronic, Python