A simple fire alarm prototype that detects temperature changes and triggers visual and audible warnings when a threshold is exceeded. built using a Raspberry Pi Pico, NTC thermistor, buzzer, and LED. This project detects temperature changes and triggers visual and audible warnings when a threshold is exceeded. Temperature readings are displayed to the Serial Monitor.
Microcontroller: Raspberry Pi Pico
Language: C/C++ (using Pico SDK in VS Code)
NTC Thermistor (temperature sensing)
Buzzer (audible alarm)
Onboard LED (visual indicator)
10kΩ resistor (voltage divider circuit)
This was my first introduction to embedded hardware and Raspberry Pi! It was definitely a humbling experience to spend hours questioning how everything worked, but it was genuinely such a fun experience to learn. Getting the LED to work for the first time made me feel so accomplished, and now I have an entire temperature monitor setup!