Monitoring temperature is a basic need in homes, offices, and industrial setups. With Arduino, you can easily build a digital thermometer that shows real-time temperature readings on a 16×2 LCD. This project helps beginners learn how to interface sensors and displays.
Components- Arduino Uno
- LM35 Temperature Sensor (or DHT11 for temp + humidity)
- 16×2 LCD Display
- 10kΩ Potentiometer
- Breadboard & Jumper Wires
LM35: VCC → 5V GND → GND Output → A0
LCD (16×2):
RS → D7
E → D6
D4 → D5, D5 → D4, D6 → D3, D7 → D2
VSS → GND, VDD → 5V, RW → GND
VO → Potentiometer (for contrast)
LED+ → 5V (through 220Ω resistor), LED- → GND
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