Temperature Indicator with Thermistor + RGB LED + LCD (I2C) + Arduino

Arduino Thermistor Thermometer Project – Complete Mathematical Explanation In this video, we explore the complete theory, mathematics, and engineering principles behind a digital thermometer built with an Arduino, an NTC thermistor, an I2C LCD display, and an RGB LED indicator. The tutorial covers the entire measurement chain, starting from temperature sensing and ending with real-time temperature display in Celsius and Fahrenheit. Along the way, we explain the physics of NTC thermistors, voltage divider circuits, analog-to-digital conversion (ADC), resistance calculation, logarithmic functions, and the Steinhart-Hart equation used to accurately convert resistance into temperature. Topics covered in this video: ✔ Introduction to NTC Thermistors ✔ Temperature vs Resistance Relationship ✔ Voltage Divider Theory and Equations ✔ Arduino ADC (Analog-to-Digital Converter) Fundamentals ✔ Derivation of Thermistor Resistance Formula ✔ Natural Logarithms and Their Role in Sensor Modeling ✔ Steinhart-Hart Equation Explained Step-by-Step ✔ Kelvin, Celsius, and Fahrenheit Conversions ✔ Temperature Classification Using RGB LEDs ✔ LCD Display Integration and Data Visualization ✔ Complete Mathematical Pipeline from Sensor Reading to Temperature Output By the end of this lesson, you will understand not only how the project works but also the mathematical and physical principles that make accurate temperature measurement possible. This tutorial is ideal for students, electronics enthusiasts, Arduino beginners, engineering learners, and anyone interested in sensor technology, embedded systems, and applied mathematics. #Arduino #Thermistor #TemperatureSensor #EmbeddedSystems #Electronics #Engineering #STEM #ArduinoProjects #IoT #Sensors #Mathematics #Physics #SteinhartHart #NTC #LCD #RGBLED #Microcontroller #Programming #Education #DIYElectronics