Mood Light with Python

An IoT-controlled mood light system using Python.

IntermediateShowcase (no instructions)3 hours3,414

Things used in this project

Hardware components

Espressif ESP8266 ESP-12E

RGB Diffused Common Anode

Software apps and online services

Arduino IDE

Python IDLE

Story

This project is based on changing the color of the light according to our mood. For this, we are using an ESP8266 device and a 4-pin RGB LED. This system is developed with TKinter Python, while with the IDE used here is Visual Studio Code (Python 3). Mood light means, most of the time we are using the white light. However, during night time rather than white light, we highly prefer for the blue light.

As we know, the sun usually emits the red light which is hotter than others. So, it can be used during daytime. Whereas, the moon emits the blue light which is cooler than others. So, it can be more preferable for sleeping during nighttime. Thus, in this concept, we change the color of light according to our mood by using the ESP8266 device and set up the color on the PC and a 4-pin RGB LED also used here for changing the colors. The 4-pin RGB has a normal LED with 3 built-in LEDs viz., red, green, and blue. This is used to make the light illuminate in 16 million colors by using the PWM concept. But in this project, we only used the web colors.

The 4-pin LED has usually 2 modes viz: common anode and common cathode. The mode used here is common anode. In Python, we are having a library called URL Lib. In this library, we can get access to all the websites for our knowledge. This is the added advantage of using Python in our system. The major application of our project is to change the color of any object according to our mood or the surroundings. For example, if we were in a green filled surrounding, we can change the color of the object to green color, etc. Another major advantage is that we can use the same code with no difference for the Raspberry Pi since the Raspberry Pi is the leading controller nowadays.

Code

/*
 *  This sketch demonstrates how to set up a simple HTTP-like server.
 *  The server will set a GPIO pin depending on the request
 *    http://server_ip/gpio/0 will set the GPIO2 low,
 *    http://server_ip/gpio/1 will set the GPIO2 high
 *  server_ip is the IP address of the ESP8266 module, will be 
 *  printed to Serial when the module is connected.
 */

#include <ESP8266WiFi.h>

const char* ssid = "acew";
const char* password = "micromax";
String red,green,blue;
// Create an instance of the server
// specify the port to listen on as an argument
WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  delay(10);

  // prepare GPIO2
  pinMode(2, OUTPUT);
    pinMode(5, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(12, OUTPUT);
  digitalWrite(2, 0);
  
  // Connect to WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  
  // Start the server
  server.begin();
  Serial.println("Server started");

  // Print the IP address
  Serial.println(WiFi.localIP());
}

void loop() {
  // Check if a client has connected
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
  
  // Wait until the client sends some data
  //Serial.println("new client");
  while(!client.available()){
    delay(1);
  }
  
  // Read the first line of the request
  String req = client.readStringUntil('\r');
  Serial.println(req);
  red  = req.substring(5,8);
  green = req.substring(8,11);
  blue = req.substring(11,14);
  //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@222

  analogWrite(5, 1023-(4*red.toInt()));
  analogWrite(14, 1023-(4*green.toInt()));
  analogWrite(12, 1023-(4*blue.toInt()));
  
  //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  client.flush();
  
  // Match the request
  int val;
  if (req.indexOf("/gpio/0") != -1)
    val = 0;
  else if (req.indexOf("/gpio/1") != -1)
    val = 1;
 

  // Set GPIO2 according to the request
  digitalWrite(2, val);
  
  client.flush();

  // Prepare the response
  String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
  s += (val)?"high":"low";
  s += "</html>\n";

  // Send the response to the client
  client.print(s);
  delay(1);
  //Serial.println("Client disonnected");

  // The client will actually be disconnected 
  // when the function returns and 'client' object is detroyed
}

from tkinter import *
import urllib.request
from tkinter.colorchooser import *
colour='red'

def con(data):
    data = int(data)
    if len(str(data))==3:
        return str(data)
    
    elif len(str(data))==2:
        data ="0"+str(data)
        return data

    elif len(str(data))==1:
        data  = "00"+str(data)
        return data
    

def getColor():
    color = askcolor() 
    colour=color[1]
    print(int(color[0][1]))
    print(colour)
    k.configure(bg=colour)
    try:
        o='http://192.168.43.184/'+con(color[0][0])+con(color[0][1])+con(color[0][2])
        print(o)
        urllib.request.urlopen(o).read()
    except Exception as e:
        print(e)
    
    
    
k = Button(text='Select Color', command=getColor,bg=colour,height=100, width=100)
k.pack()
mainloop()