This project uses an Arduino to measure temperature using an NTC thermistor. When the temperature exceeds a defined threshold (35°C), it triggers a buzzer alarm. The current temperature is also output to the serial monitor for real-time monitoring.
- Temperature measurement using thermistor and voltage divider
- Temperature calculation using Beta parameter formula
- Audible buzzer alert on high temperature threshold breach
- Serial output of temperature readings
- Arduino board (Uno, Nano, etc.)
- NTC Thermistor (e.g., 1kΩ, Beta 3950)
- Reference resistor (1kΩ)
- Piezo buzzer
- Jumper wires
- Breadboard
- Thermistor and reference resistor form a voltage divider connected to analog input A0.
- Buzzer connected to digital pin 9.
- Ground and 5V connections as per circuit.
- Connect components as per the diagram.
- Upload the sketch to the Arduino.
- Monitor temperature in Serial Monitor.
- Buzzer sounds if temperature exceeds threshold.
- Temperature monitoring and alert systems
- Overheat protection in electronics
- Simple embedded sensor-based alarms
Created by Kartik Verma for learning and practical temperature control projects.