https://github.com/redduckbot/raspberrypi-led-web-app

Locally controlling LED lights from a web browser using Raspberry PI and python Flask.
https://github.com/redduckbot/raspberrypi-led-web-app

inter-process-communication opencv python-flask raspberry-pi tcp-client tcp-server udp-client udp-server web-application

Last synced: 17 days ago
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Locally controlling LED lights from a web browser using Raspberry PI and python Flask.

• Host: GitHub
• URL: https://github.com/redduckbot/raspberrypi-led-web-app
• Owner: RedDuckBot
• Created: 2024-07-21T23:39:25.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2024-08-02T21:21:26.000Z (5 months ago)
• Last Synced: 2024-12-06T00:13:16.394Z (17 days ago)
• Topics: inter-process-communication, opencv, python-flask, raspberry-pi, tcp-client, tcp-server, udp-client, udp-server, web-application
• Language: Python
• Homepage:
• Size: 94.2 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Simple LED Web Application 

Locally control three LEDs through a web browser, and get a live video stream 

of any changes made. The setup involves a web server made using the python 

framework Flask, Raspberry PI 3B+, and python OpenCV to operate a USB camera.



  



## Architecture



  



The above diagram shows how the project's software components were setup, involving three servers, who are started in "main.py", and a program running on the Raspberry PI, called "control_LEDs.py", containing two threads that are responsible for operating the USB camera and LEDs. 

## Running the Application

Before starting the programs, connect the USB camera and LEDs to the Raspberry PI's GPIO pins: 

- Red ---> GPIO22 

- Yellow ---> GPIO27

- Green ---> GPIO17

Install require python packages:

```

pip install -r ./docs/requirements.txt

```

Next, identify the IP address for your machine that you'll be running the servers on. Then, in the files "main.py", "control_LEDs.py", and "server_LED.py", set the global variable "HOST" to this IP. Now the programs can be started.

Start the servers on the computer hosting them:

```

python main.py

```

Then, start "control_LEDs.py" on the Raspberry PI. 

Finally, access a browser from any computer on your local network and enter the

following into the omni box: "[HOST IP address]:9999"

When done with the application, all the running programs can be closed by hitting Ctrl + c.