A-SLI04 - ThermoGlow – Weather Display Indicator

📘 Project Title:
ThermoGlow
– Weather Display Indicator

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📘 Project Overview:
The ThermoGlow
is an interactive temperature monitoring system
designed using an Arduino microcontroller, a DHT11 sensor, a 16x2
LCD, and an RGB LED. This project provides real-time visual and
textual feedback about the surrounding temperature in an intuitive and
beginner-friendly way. It is ideal for students, DIY enthusiasts,
or anyone learning embedded systems and IoT concepts.

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🎯 Objective:
To create a simple, low-cost, and effective room
temperature indicator that:

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Reads temperature mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> using a DHT11 sensor

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Displays readings mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> on a 16x2 LCD

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Indicates temperature range mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> through color-coded RGB lighting

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mso-fareast-language:EN-IN">

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mso-bidi-font-family:"Segoe UI Emoji";mso-fareast-language:EN-IN">🔧 "Times New Roman";mso-bidi-font-family:"Times New Roman";mso-fareast-language:
EN-IN"> Working Principle:
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
mso-fareast-language:EN-IN">The system continuously reads the temperature from
the DHT11 digital sensor and performs two main actions:

1. mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
   mso-fareast-language:EN-IN">Text Output on LCD mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
   mso-fareast-language:EN-IN">:

• Line 1: Displays the current temperature
  (e.g., "Temp: 27.00 C")

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Line 2: Shows the room's thermal status: mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Courier New";
  mso-fareast-language:EN-IN">COOL mso-bidi-font-family:"Times New Roman";mso-fareast-language:EN-IN">, mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Courier New";
  mso-fareast-language:EN-IN">NORMAL mso-bidi-font-family:"Times New Roman";mso-fareast-language:EN-IN">, or mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Courier New";
  mso-fareast-language:EN-IN">HEAT

1. mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
   mso-fareast-language:EN-IN">Color Output via RGB LED mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
   mso-fareast-language:EN-IN">:

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Blue mso-bidi-font-family:"Times New Roman";mso-fareast-language:EN-IN"> if
  the temperature is below 25°C ( mso-bidi-font-family:"Courier New";mso-fareast-language:EN-IN">COOL mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">)

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Green mso-bidi-font-family:"Times New Roman";mso-fareast-language:EN-IN"> if
  temperature is between 25°C and 29°C ( mso-bidi-font-family:"Courier New";mso-fareast-language:EN-IN">NORMAL mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">)

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Red mso-bidi-font-family:"Times New Roman";mso-fareast-language:EN-IN"> if
  the temperature exceeds 30°C ( mso-bidi-font-family:"Courier New";mso-fareast-language:EN-IN">HEAT mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">)

mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
mso-fareast-language:EN-IN">These outputs provide both quantitative
(numeric) and qualitative (visual) indicators for the user. mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
mso-fareast-language:EN-IN">

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mso-bidi-font-family:"Segoe UI Emoji";mso-fareast-language:EN-IN">🧰 "Times New Roman";mso-bidi-font-family:"Times New Roman";mso-fareast-language:
EN-IN"> Key Components Used:

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Arduino UNO or Nano mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> – Microcontroller for logic and control

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">DHT11 Sensor "Times New Roman";mso-bidi-font-family:"Times New Roman";mso-fareast-language:
  EN-IN"> – To sense temperature

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">16x2 LCD Display (parallel) mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> – For text output

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">RGB LED (common cathode) mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> – To indicate temperature status by color

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">220Ω Resistors mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> – To limit current for LED pins

• mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN">Breadboard & Jumper Wires mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
  mso-fareast-language:EN-IN"> – For easy prototyping

mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
mso-fareast-language:EN-IN">

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mso-bidi-font-family:"Segoe UI Emoji";mso-fareast-language:EN-IN">🔎 "Times New Roman";mso-bidi-font-family:"Times New Roman";mso-fareast-language:
EN-IN"> Applications:

• Smart home temperature indicators

• Weather monitoring for classrooms

• Server room or electronics lab temperature
  alert system

• Student learning kits for embedded and IoT
  topics

mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
mso-fareast-language:EN-IN">

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mso-bidi-font-family:"Segoe UI Emoji";mso-fareast-language:EN-IN">💡 "Times New Roman";mso-bidi-font-family:"Times New Roman";mso-fareast-language:
EN-IN"> Learning Outcomes:
mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
mso-fareast-language:EN-IN">By building this project, learners will understand:

• How to interface and use the DHT11
  sensor

• How to display data using a 16x2 LCD
  (non-I2C)

• How to control an RGB LED using PWM

• How to implement conditional logic in
  embedded code

• Basic concepts of real-time monitoring
  systems