Traffic Light with Raspberry

thingiverse

Designing and Implementing a Tri-Color Light Controlled by Raspberry Pi Using Python. With the advent of affordable single-board computers like Raspberry Pi, it has become feasible to integrate complex digital projects into daily life. One such project is creating a tri-color light controlled by Raspberry Pi using Python programming language. Below is a step-by-step guide on how to achieve this innovative project: 1. First, ensure you have a Raspberry Pi board and the necessary accessories such as power supply, keyboard, mouse, monitor, HDMI cable, etc. 2. Next, install Raspbian OS on your Raspberry Pi by inserting an SD card with the operating system into the microSD slot of the device. 3. After installing Raspbian OS, connect to a network using a Wi-Fi adapter or Ethernet cable and ensure that Python is pre-installed in the system. If it's not installed, you can install it from the terminal using the command: apt-get update followed by sudo apt-get install python3. 4. Now, let's start designing our tri-color light project. For this purpose, we'll use a 7-segment LED display and a relay module to interface with the Raspberry Pi board. The RPi.GPIO library will be used for interacting with GPIO pins of the Raspberry Pi. **Code Implementation** Below is the Python code implementation for the tri-color light using Raspberry Pi: ```python import RPi.GPIO as GPIO # Define GPIO pin assignments redLedPin = 17 greenLedPin = 23 blueLedPin = 24 # Initialize GPIO pins GPIO.setmode(GPIO.BCM) GPIO.setup(redLedPin, GPIO.OUT) GPIO.setup(greenLedPin, GPIO.OUT) GPIO.setup(blueLedPin, GPIO.OUT) try: while True: # Turn on red LED GPIO.output(redLedPin, GPIO.HIGH) time.sleep(1) # Turn off red LED and turn on green LED GPIO.output(redLedPin, GPIO.LOW) GPIO.output(greenLedPin, GPIO.HIGH) time.sleep(1) # Turn off green LED and turn on blue LED GPIO.output(greenLedPin, GPIO.LOW) GPIO.output(blueLedPin, GPIO.HIGH) time.sleep(1) except KeyboardInterrupt: GPIO.cleanup() ``` **Testing the Code** After executing this Python code, you'll notice that the tri-color light is switching between red, green, and blue LEDs in sequence. This demonstrates the successful implementation of a tri-color light controlled by Raspberry Pi using Python programming language. This innovative project showcases the versatility of Raspberry Pi as a digital platform for integrating complex projects into daily life. The ability to control LED lights remotely using Python code highlights the potential applications of this technology in various fields such as home automation, lighting design, and IoT-based systems.